FR2627313B1 - DEVICE FOR SUSPENSION AND DRIVE OF COMPUTER MEMORY DISCS - Google Patents
DEVICE FOR SUSPENSION AND DRIVE OF COMPUTER MEMORY DISCSInfo
- Publication number
- FR2627313B1 FR2627313B1 FR8801716A FR8801716A FR2627313B1 FR 2627313 B1 FR2627313 B1 FR 2627313B1 FR 8801716 A FR8801716 A FR 8801716A FR 8801716 A FR8801716 A FR 8801716A FR 2627313 B1 FR2627313 B1 FR 2627313B1
- Authority
- FR
- France
- Prior art keywords
- bearings
- rotor
- fixed
- electric motor
- suspension
- 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
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
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0459—Details of the magnetic circuit
-
- 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
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0474—Active magnetic bearings for rotary movement
- F16C32/0489—Active magnetic bearings for rotary movement with active support of five degrees of freedom, e.g. two radial magnetic bearings combined with an axial bearing
-
- 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
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0474—Active magnetic bearings for rotary movement
- F16C32/0489—Active magnetic bearings for rotary movement with active support of five degrees of freedom, e.g. two radial magnetic bearings combined with an axial bearing
- F16C32/0491—Active magnetic bearings for rotary movement with active support of five degrees of freedom, e.g. two radial magnetic bearings combined with an axial bearing with electromagnets acting in axial and radial direction, e.g. with conical magnets
-
- 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
- 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)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Rotational Drive Of Disk (AREA)
Abstract
The support and drive mechanism includes a cylindrical rotor (20) constituting a magnetic shield and a mechanical support for multiple hard discs (31) fixed on the external face (25) of the rotor. A fixed central shaft (1) supports the emergency mechanical bearings (14,15) and the stators (61,62,71,72) of two active radial magnetic bearings (60,70) together with the stator (50,51) of an electric motor (50) placed between the two bearings. The rotor (20) has, on its internal face, laminated armatures (53,63,73) forming the rotor armatures of the electric motor and the two magnetic bearings. The bearings are servo-controlled in response to radial and axial position transducers (80,90). ADVANTAGE - Allows increase in density of date which can be stored on fixed hard disc through better position control.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8801716A FR2627313B1 (en) | 1988-02-12 | 1988-02-12 | DEVICE FOR SUSPENSION AND DRIVE OF COMPUTER MEMORY DISCS |
JP3095089A JPH0677368B2 (en) | 1988-02-12 | 1989-02-09 | Recording disk support and drive |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8801716A FR2627313B1 (en) | 1988-02-12 | 1988-02-12 | DEVICE FOR SUSPENSION AND DRIVE OF COMPUTER MEMORY DISCS |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2627313A1 FR2627313A1 (en) | 1989-08-18 |
FR2627313B1 true FR2627313B1 (en) | 1994-08-05 |
Family
ID=9363235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8801716A Expired - Fee Related FR2627313B1 (en) | 1988-02-12 | 1988-02-12 | DEVICE FOR SUSPENSION AND DRIVE OF COMPUTER MEMORY DISCS |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPH0677368B2 (en) |
FR (1) | FR2627313B1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4998033A (en) * | 1989-04-12 | 1991-03-05 | Ebara Corporation | Gas dynamic bearing for spindle motor |
JPH04103076A (en) * | 1990-08-22 | 1992-04-06 | Nec Ibaraki Ltd | Spindle motor |
DE69125836T2 (en) * | 1991-11-14 | 1997-12-18 | Quantum Corp | Spindle and hub equipment |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1186527A (en) * | 1957-11-18 | 1959-08-26 | Hispano Suiza Sa | Improvements made to bearings for rotating bodies, in particular for assemblies which must rotate inside a sealed enclosure |
NL108780C (en) * | 1959-03-02 | 1964-07-15 | ||
DE2457783C2 (en) * | 1974-12-06 | 1986-10-09 | Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh, 6334 Asslar | Magnetic storage |
JPS5677952A (en) * | 1979-11-27 | 1981-06-26 | Matsushita Electric Ind Co Ltd | Turntable device |
FR2528923A1 (en) * | 1982-06-17 | 1983-12-23 | Europ Propulsion | MAGNETIC SUSPENSION DEVICE OF A ROTOR PLACED IN A SEALED ENCLOSURE |
JPS6026676U (en) * | 1983-07-28 | 1985-02-22 | 日本精工株式会社 | magnetic disk storage device |
NL8502058A (en) * | 1985-07-17 | 1987-02-16 | Philips Nv | ELECTRICAL MACHINE WITH MAGNETIC BEARING FEATURES. |
FR2588991A1 (en) * | 1985-10-23 | 1987-04-24 | Bull Sa | ROTATIONAL DRIVE SYSTEM OF AT LEAST ONE MAGNETIC DISK AND ELECTRIC MOTOR INCLUDED IN SAID SYSTEM |
-
1988
- 1988-02-12 FR FR8801716A patent/FR2627313B1/en not_active Expired - Fee Related
-
1989
- 1989-02-09 JP JP3095089A patent/JPH0677368B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH01271965A (en) | 1989-10-31 |
FR2627313A1 (en) | 1989-08-18 |
JPH0677368B2 (en) | 1994-09-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |