GB2303413B - Dynamic pressure bearing device - Google Patents

Dynamic pressure bearing device

Info

Publication number
GB2303413B
GB2303413B GB9614948A GB9614948A GB2303413B GB 2303413 B GB2303413 B GB 2303413B GB 9614948 A GB9614948 A GB 9614948A GB 9614948 A GB9614948 A GB 9614948A GB 2303413 B GB2303413 B GB 2303413B
Authority
GB
United Kingdom
Prior art keywords
dynamic pressure
pressure bearing
sleeve
shaft
fixed
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
GB9614948A
Other versions
GB9614948D0 (en
GB2303413A (en
Inventor
Takeshi Takahashi
Yasuo Takamura
Takashi Honda
Hideo Chihama
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.)
Koyo Seiko Co Ltd
TDK Corp
Original Assignee
Koyo Seiko Co Ltd
TDK 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 Koyo Seiko Co Ltd, TDK Corp filed Critical Koyo Seiko Co Ltd
Publication of GB9614948D0 publication Critical patent/GB9614948D0/en
Publication of GB2303413A publication Critical patent/GB2303413A/en
Application granted granted Critical
Publication of GB2303413B publication Critical patent/GB2303413B/en
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
    • 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
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
    • F16C17/026—Sliding-contact bearings for exclusively rotary movement for radial load only with helical grooves in the bearing surface to generate hydrodynamic pressure, e.g. herringbone grooves
    • 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
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/52—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with simultaneous movement of head and record carrier, e.g. rotation of head
    • G11B5/53—Disposition or mounting of heads on rotating support
    • 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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

PROBLEM TO BE SOLVED: To ensure rotating accuracy in an axial direction by prevent slip-off in the axial direction at the time of high speed rotation, and also to prevent vibration and oscillation. SOLUTION: In a dynamic pressure, a shaft 3 is fixed on either one center part of a fixing member 2 and a rotating member 1, a sleeve 8 is fixed on the other center part, they are engaged with each other, and a dynamic pressure bearing is formed between the shaft 3 and the sleeve 8. A thrust plate 7 is fixed on the shaft 3, the thrust plate 7 is arranged on a circumferential recessed part 10 formed on the inner circumferential surface of the sleeve 8, and thereby, a thrust dynamic pressure bearing is formed between the upper/lower surfaces of the thrust plate 7 and the circumferential recessed part 10.
GB9614948A 1995-07-20 1996-07-16 Dynamic pressure bearing device Expired - Fee Related GB2303413B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20761595A JPH0932850A (en) 1995-07-20 1995-07-20 Dynamic pressure bearing device

Publications (3)

Publication Number Publication Date
GB9614948D0 GB9614948D0 (en) 1996-09-04
GB2303413A GB2303413A (en) 1997-02-19
GB2303413B true GB2303413B (en) 1999-09-22

Family

ID=16542731

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9614948A Expired - Fee Related GB2303413B (en) 1995-07-20 1996-07-16 Dynamic pressure bearing device

Country Status (2)

Country Link
JP (1) JPH0932850A (en)
GB (1) GB2303413B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10037077A1 (en) * 2000-07-27 2002-02-28 Paul Mueller Gmbh & Co Kg Dynamic gas bearing of a motor spindle with ventilation
CN114635872B (en) * 2022-04-19 2023-09-05 广东美芝制冷设备有限公司 Fan and cleaning equipment
CN114790996B (en) * 2022-04-19 2024-02-06 广东美芝制冷设备有限公司 Blower and cleaning device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2043182A (en) * 1979-01-16 1980-10-01 Matsushita Electric Ind Co Ltd Bearing assemblies
EP0038602A1 (en) * 1980-04-18 1981-10-28 Ihc Holland N.V. An axial bearing
US4445793A (en) * 1981-09-18 1984-05-01 Matsushita Electric Industrial Co., Ltd. Bearing
US5423612A (en) * 1994-09-16 1995-06-13 Quantum Corp. Hydrodynamic bearing and seal
US5487608A (en) * 1994-07-22 1996-01-30 Seagate Technology, Inc. Single plate hydrodynamic bearing with self-balancing fluid level and fluid circulation
US5516212A (en) * 1995-09-18 1996-05-14 Western Digital Corporation Hydrodynamic bearing with controlled lubricant pressure distribution
GB2298464A (en) * 1995-02-15 1996-09-04 Koyo Seiko Co Spindle unit having dynamic pressure bearings

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2043182A (en) * 1979-01-16 1980-10-01 Matsushita Electric Ind Co Ltd Bearing assemblies
EP0038602A1 (en) * 1980-04-18 1981-10-28 Ihc Holland N.V. An axial bearing
US4445793A (en) * 1981-09-18 1984-05-01 Matsushita Electric Industrial Co., Ltd. Bearing
US5487608A (en) * 1994-07-22 1996-01-30 Seagate Technology, Inc. Single plate hydrodynamic bearing with self-balancing fluid level and fluid circulation
US5423612A (en) * 1994-09-16 1995-06-13 Quantum Corp. Hydrodynamic bearing and seal
GB2298464A (en) * 1995-02-15 1996-09-04 Koyo Seiko Co Spindle unit having dynamic pressure bearings
US5516212A (en) * 1995-09-18 1996-05-14 Western Digital Corporation Hydrodynamic bearing with controlled lubricant pressure distribution

Also Published As

Publication number Publication date
GB9614948D0 (en) 1996-09-04
GB2303413A (en) 1997-02-19
JPH0932850A (en) 1997-02-04

Similar Documents

Publication Publication Date Title
ES2074071T3 (en) ROTATION DEVICE THAT SUPPORTS A POLYGONAL MIRROR.
FR2698421B1 (en) Housing for radial fixing of a bearing.
KR920004739A (en) Bearing device capable of changing preload and its method
WO2003036111A1 (en) Bearing unit, and motor using this bearing unit
GB2330179A (en) Spindle motor with multiple thrust plate fluid dynamic bearing
KR850008392A (en) Scroll fluid machine
MY114355A (en) Seal for bearings in small angle oscillation applications
JPH0533840A (en) Planetary friction type speed changer
GB2303413B (en) Dynamic pressure bearing device
JPS6416236A (en) Stepping motor for disc drive actuator
SE7508310L (en) INDUCTION MOTOR WITH AXIALLY ARRANGED AIR GAP
EP0404511A3 (en) Ultrasonic motor
EP1098096A4 (en) Dynamic pressure bearing and spindle motor
JPH0651224A (en) Optical scanning device
Bishop et al. Vibration and balancing of flexible shafts
KR970059719A (en) Axial load applying device of high speed, high load bearing tester
JPS643315A (en) Bearing device
Eshleman Some recent advances in rotor dynamics
JPS6412128A (en) Static pressure gas bearing device
JPS54108010A (en) Oscillating compressor
KR940000809Y1 (en) Bearing device
JPS642693A (en) Washing machine
RU93008790A (en) MEMBRANE CARTRIDGE
KR890008445A (en) Rotor of drive
RU93048138A (en) VIBRATOR

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20150716