WO2009013963A1 - Dynamic pressure bearing device - Google Patents

Dynamic pressure bearing device Download PDF

Info

Publication number
WO2009013963A1
WO2009013963A1 PCT/JP2008/061391 JP2008061391W WO2009013963A1 WO 2009013963 A1 WO2009013963 A1 WO 2009013963A1 JP 2008061391 W JP2008061391 W JP 2008061391W WO 2009013963 A1 WO2009013963 A1 WO 2009013963A1
Authority
WO
WIPO (PCT)
Prior art keywords
section
shaft member
shaft
dynamic pressure
pressure bearing
Prior art date
Application number
PCT/JP2008/061391
Other languages
French (fr)
Japanese (ja)
Inventor
Masaaki Toda
Isao Komori
Tetsuya Kurimura
Original Assignee
Ntn Corporation
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 Ntn Corporation filed Critical Ntn Corporation
Publication of WO2009013963A1 publication Critical patent/WO2009013963A1/en

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
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
    • F16C17/08—Sliding-contact bearings for exclusively rotary movement for axial load only for supporting the end face of a shaft or other member, e.g. footstep 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
    • 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
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/74—Sealings of sliding-contact 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Sliding-Contact Bearings (AREA)
  • Mounting Of Bearings Or Others (AREA)

Abstract

A dynamic pressure bearing device in which a shaft member has a shaft section and a flange section and in which one end of the shaft member is pivotally supported, wherein the accuracy of assembly between the shaft section and the flange section is not degraded. The dynamic pressure bearing (1) has the shaft member (2) and a bearing sleeve (8) placed on the outer periphery of the shaft member (2) and rotating relative to the shaft member (2). The shaft member (2) has the shaft section (21), the flange section (22), and a sliding section (23). The flange section (22) axially engages with a lower end surface (8b), functioning as a prevention section, of the bearing sleeve (8) to prevent the shaft member (2) from coming out of place. The sliding section (23) is in contact with a bottom section, functioning as a thrust receiver, of a housing (7) to support a thrust load. The flange section (22) and the sliding section (23) are integrally formed together.
PCT/JP2008/061391 2007-07-23 2008-06-23 Dynamic pressure bearing device WO2009013963A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-191150 2007-07-23
JP2007191150A JP5220359B2 (en) 2007-07-23 2007-07-23 Hydrodynamic bearing device

Publications (1)

Publication Number Publication Date
WO2009013963A1 true WO2009013963A1 (en) 2009-01-29

Family

ID=40281222

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/061391 WO2009013963A1 (en) 2007-07-23 2008-06-23 Dynamic pressure bearing device

Country Status (2)

Country Link
JP (1) JP5220359B2 (en)
WO (1) WO2009013963A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010055911A1 (en) 2008-11-14 2010-05-20 大日本住友製薬株式会社 Biphenylacetamide derivative
JP2015001255A (en) * 2013-06-14 2015-01-05 日本電産株式会社 Bearing mechanism and blower fan

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6105527B2 (en) * 2014-08-18 2017-03-29 シナノケンシ株式会社 Bearing device and motor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11103554A (en) * 1997-09-29 1999-04-13 Hitachi Ltd Bearing unit for spindle motor
JP2002159158A (en) * 2000-11-17 2002-05-31 Nidec Copal Corp Retaining structure of motor rotor
JP2004263707A (en) * 2003-01-10 2004-09-24 Sony Corp Bearing unit and rotation driving device having the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11103554A (en) * 1997-09-29 1999-04-13 Hitachi Ltd Bearing unit for spindle motor
JP2002159158A (en) * 2000-11-17 2002-05-31 Nidec Copal Corp Retaining structure of motor rotor
JP2004263707A (en) * 2003-01-10 2004-09-24 Sony Corp Bearing unit and rotation driving device having the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010055911A1 (en) 2008-11-14 2010-05-20 大日本住友製薬株式会社 Biphenylacetamide derivative
JP2015001255A (en) * 2013-06-14 2015-01-05 日本電産株式会社 Bearing mechanism and blower fan

Also Published As

Publication number Publication date
JP5220359B2 (en) 2013-06-26
JP2009024844A (en) 2009-02-05

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