GB2303498B - Spindle motor - Google Patents

Spindle motor

Info

Publication number
GB2303498B
GB2303498B GB9614947A GB9614947A GB2303498B GB 2303498 B GB2303498 B GB 2303498B GB 9614947 A GB9614947 A GB 9614947A GB 9614947 A GB9614947 A GB 9614947A GB 2303498 B GB2303498 B GB 2303498B
Authority
GB
United Kingdom
Prior art keywords
spindle motor
spindle
motor
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
GB9614947A
Other versions
GB9614947D0 (en
GB2303498A (en
Inventor
Takeshi Takahashi
Yasuo Takamura
Nariaki Endo
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 GB9614947D0 publication Critical patent/GB9614947D0/en
Publication of GB2303498A publication Critical patent/GB2303498A/en
Application granted granted Critical
Publication of GB2303498B publication Critical patent/GB2303498B/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
    • 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
    • H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
    • H02K5/1675—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotary shaft at only one end of the rotor

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Sliding-Contact Bearings (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Motor Or Generator Frames (AREA)
GB9614947A 1995-07-20 1996-07-16 Spindle motor Expired - Fee Related GB2303498B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7207616A JPH0937513A (en) 1995-07-20 1995-07-20 Spindle motor

Publications (3)

Publication Number Publication Date
GB9614947D0 GB9614947D0 (en) 1996-09-04
GB2303498A GB2303498A (en) 1997-02-19
GB2303498B true GB2303498B (en) 2000-01-26

Family

ID=16542749

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9614947A Expired - Fee Related GB2303498B (en) 1995-07-20 1996-07-16 Spindle motor

Country Status (2)

Country Link
JP (1) JPH0937513A (en)
GB (1) GB2303498B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010063011A (en) * 1999-12-21 2001-07-09 이형도 Spindle motor
JP2002233100A (en) * 2001-01-31 2002-08-16 Minebea Co Ltd Spindle motor and bearing assembly
WO2005046026A1 (en) * 2003-11-05 2005-05-19 G & W Technologies, Inc. Fluid dynamic bearing motor
KR100608515B1 (en) * 2005-04-19 2006-08-03 에이테크솔루션(주) Super thin spindle motor forming grooves at surrounding surface of thrust bearing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0445733A1 (en) * 1990-03-05 1991-09-11 Ebara Corporation Spindle motor
GB2245108A (en) * 1990-06-01 1991-12-18 Mitsubishi Electric Corp Brushless electric motor
GB2298464A (en) * 1995-02-15 1996-09-04 Koyo Seiko Co Spindle unit having dynamic pressure bearings

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0445733A1 (en) * 1990-03-05 1991-09-11 Ebara Corporation Spindle motor
GB2245108A (en) * 1990-06-01 1991-12-18 Mitsubishi Electric Corp Brushless electric motor
GB2298464A (en) * 1995-02-15 1996-09-04 Koyo Seiko Co Spindle unit having dynamic pressure bearings

Also Published As

Publication number Publication date
GB9614947D0 (en) 1996-09-04
GB2303498A (en) 1997-02-19
JPH0937513A (en) 1997-02-07

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Legal Events

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

Effective date: 20150716