GB8720741D0 - Electric motor - Google Patents

Electric motor

Info

Publication number
GB8720741D0
GB8720741D0 GB8720741A GB8720741A GB8720741D0 GB 8720741 D0 GB8720741 D0 GB 8720741D0 GB 8720741 A GB8720741 A GB 8720741A GB 8720741 A GB8720741 A GB 8720741A GB 8720741 D0 GB8720741 D0 GB 8720741D0
Authority
GB
United Kingdom
Prior art keywords
shaft
armature
electric motor
motor frame
magnet
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.)
Granted
Application number
GB8720741A
Other versions
GB2201843A (en
GB2201843B (en
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.)
Johnson Electric Industrial Manufactory Ltd
Original Assignee
Johnson Electric Industrial Manufactory Ltd
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 Johnson Electric Industrial Manufactory Ltd filed Critical Johnson Electric Industrial Manufactory Ltd
Publication of GB8720741D0 publication Critical patent/GB8720741D0/en
Publication of GB2201843A publication Critical patent/GB2201843A/en
Application granted granted Critical
Publication of GB2201843B publication Critical patent/GB2201843B/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
    • F16C39/00—Relieving load on bearings
    • F16C39/06—Relieving load on bearings using magnetic means
    • F16C39/063—Permanent magnets
    • 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
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/02—Sliding-contact bearings
    • F16C25/04—Sliding-contact bearings self-adjusting
    • F16C25/045—Sliding-contact bearings self-adjusting with magnetic means to preload the bearing
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
    • H02K13/006—Structural associations of commutators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/54—Disc armature motors or generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/09—Structural association with bearings with magnetic 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)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Dc Machiner (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

A motor comprising a motor frame (10, 11, 12), a moving coil armature (18, 19, 22) having a shaft (18) which is supported for rotation in the motor frame, and a thrust face (17) on one side of the armature, first and second magnets (33, 34) are mounted with like poles adjacent on the other side of the armature, magnet (33) with respect 10 the shaft and magnet (34) with respect to the motor frame so that repulsion forces between the magnets urge an end of the shaft 18a into contact with the thrust face 17. <IMAGE>
GB8720741A 1987-03-02 1987-09-03 An electric motor Expired - Fee Related GB2201843B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8704827A GB2201841A (en) 1987-03-02 1987-03-02 An electric motor thrust bearing basing arrangement

Publications (3)

Publication Number Publication Date
GB8720741D0 true GB8720741D0 (en) 1987-10-07
GB2201843A GB2201843A (en) 1988-09-07
GB2201843B GB2201843B (en) 1990-12-12

Family

ID=10613175

Family Applications (2)

Application Number Title Priority Date Filing Date
GB8704827A Withdrawn GB2201841A (en) 1987-03-02 1987-03-02 An electric motor thrust bearing basing arrangement
GB8720741A Expired - Fee Related GB2201843B (en) 1987-03-02 1987-09-03 An electric motor

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB8704827A Withdrawn GB2201841A (en) 1987-03-02 1987-03-02 An electric motor thrust bearing basing arrangement

Country Status (1)

Country Link
GB (2) GB2201841A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2219427B (en) * 1988-05-04 1992-11-18 M4 Data Ltd Electric motors
AU2003250991A1 (en) * 2002-08-30 2004-03-19 Ebm-Papst St. Georgen Gmbh And Co. Kg Device comprising a plain bearing
EP3270490B1 (en) * 2016-07-13 2020-04-29 Schwarzer Precision GmbH & Co. KG Pump and method for reducing or eliminating noise and/or vibrations for pumps
CN109199153A (en) * 2017-07-07 2019-01-15 广东美的生活电器制造有限公司 food processor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1034733B (en) * 1974-04-11 1979-10-10 Teldix Gmbh ELECTRIC MACHINE
NL8502058A (en) * 1985-07-17 1987-02-16 Philips Nv ELECTRICAL MACHINE WITH MAGNETIC BEARING FEATURES.

Also Published As

Publication number Publication date
GB2201843A (en) 1988-09-07
GB2201841A (en) 1988-09-07
GB8704827D0 (en) 1987-04-08
GB2201843B (en) 1990-12-12

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Legal Events

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