WO2001010002A3 - Spindle motor for hard disk drive - Google Patents

Spindle motor for hard disk drive Download PDF

Info

Publication number
WO2001010002A3
WO2001010002A3 PCT/US2000/019870 US0019870W WO0110002A3 WO 2001010002 A3 WO2001010002 A3 WO 2001010002A3 US 0019870 W US0019870 W US 0019870W WO 0110002 A3 WO0110002 A3 WO 0110002A3
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
stator
motor
spindle motor
bearing
Prior art date
Application number
PCT/US2000/019870
Other languages
French (fr)
Other versions
WO2001010002A2 (en
Inventor
Griffith D Neal
Original Assignee
Encap Motor Corp
Griffith D Neal
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 Encap Motor Corp, Griffith D Neal filed Critical Encap Motor Corp
Priority to AU62287/00A priority Critical patent/AU6228700A/en
Publication of WO2001010002A2 publication Critical patent/WO2001010002A2/en
Publication of WO2001010002A3 publication Critical patent/WO2001010002A3/en

Links

Classifications

    • 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
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1737—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
    • 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
    • H02K1/00—Details of the magnetic circuit
    • H02K1/04—Details of the magnetic circuit characterised by the material used for insulating the magnetic circuit or parts thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/187—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to inner stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/10—Applying solid insulation to windings, stators or rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/38—Windings characterised by the shape, form or construction of the insulation around winding heads, equalising connectors, or connections thereto
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/02—Casings or enclosures characterised by the material thereof
    • 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
    • H02K5/08—Insulating casings
    • 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
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • 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
    • 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
    • H02K5/1677—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 rotor around a fixed spindle; radially supporting the rotor directly
    • 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
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1735—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at only one end of the rotor
    • 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
    • H02K7/085—Structural association with bearings radially supporting the rotary shaft at only one end of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/16—Centering rotors within the stator; Balancing rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2211/00—Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
    • H02K2211/03—Machines characterised by circuit boards, e.g. pcb
    • 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
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • 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
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Motor Or Generator Frames (AREA)
  • Rotational Drive Of Disk (AREA)
  • Brushless Motors (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The present invention is directed to a high speed spindle motor comprising a stator assembly including a stator having multiple conductors that create a plurality of magnetic fields when electrical current is conducted by the conductors and a body of a phase change material such as a thermoplastic substantially encapsulating the stator. A rotatable hub having a magnet connected thereto is in operable proximity to the stator. The high speed motor also includes a shaft, a bearing surrounding the shaft and one of the bearing or shaft being fixed to the stator assembly and the other of the bearing or shaft being fixed to the rotatable hub. Hard disc drives using the motor, and methods of developing and constructing the motor and hard disc drives are also disclosed.
PCT/US2000/019870 1999-07-29 2000-07-19 Spindle motor for hard disk drive WO2001010002A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU62287/00A AU6228700A (en) 1999-07-29 2000-07-19 High speed spindle motor

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US14644699P 1999-07-29 1999-07-29
US60/146,446 1999-07-29
US17181799P 1999-12-21 1999-12-21
US60/171,817 1999-12-21

Publications (2)

Publication Number Publication Date
WO2001010002A2 WO2001010002A2 (en) 2001-02-08
WO2001010002A3 true WO2001010002A3 (en) 2001-11-22

Family

ID=26843912

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/019870 WO2001010002A2 (en) 1999-07-29 2000-07-19 Spindle motor for hard disk drive

Country Status (3)

Country Link
JP (1) JP2001095213A (en)
AU (1) AU6228700A (en)
WO (1) WO2001010002A2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6844636B2 (en) 1999-12-17 2005-01-18 Encap Motor Corporation Spindle motor with encapsulated stator and method of making same
KR100878119B1 (en) * 2002-10-17 2009-01-14 두산인프라코어 주식회사 Aerostatic bearing device of high speed spindle for milling processing
US7939975B2 (en) 2007-10-26 2011-05-10 E. I Du Pont De Nemours And Company Over-mold stator assembly and process for preparation thereof
US8312617B2 (en) * 2009-09-17 2012-11-20 Alphana Technology Co., Ltd. Method of manufacturing a disk drive having a base member, bearing unit, drive unit and hub
CN113007106B (en) 2011-07-13 2023-08-11 费雪派克医疗保健有限公司 Impeller and motor assembly
DE102012008016A1 (en) * 2012-04-24 2013-10-24 Daimler Ag Rotor carrier for an electric machine, supporting element for a rotor carrier and method for producing a support element
CN205515844U (en) 2012-12-18 2016-08-31 费雪派克医疗保健有限公司 Breathe auxiliary device and be used for assembly of motor
DE102016216891A1 (en) 2016-09-06 2018-03-08 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Drive device for a window lift, with a bearing element for supporting a transmission part
CN106253559A (en) * 2016-09-29 2016-12-21 浙江吉利控股集团有限公司 A kind of motor triple line outgoing line device
CN114288513A (en) 2017-04-23 2022-04-08 费雪派克医疗保健有限公司 Breathing assistance apparatus
KR102129113B1 (en) * 2020-03-10 2020-07-08 김종호 Motor inspection system

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01190256A (en) * 1988-01-25 1989-07-31 Matsushita Electric Ind Co Ltd Motor
US4855853A (en) * 1986-10-15 1989-08-08 Hitachi, Ltd. Actuator for positioning heads in magnetic disc apparatus
JPH01291652A (en) * 1988-05-18 1989-11-24 Toshiba Corp Axial gap type brushless motor
JPH03128645A (en) * 1989-10-11 1991-05-31 Mitsubishi Electric Corp Resin injecting device for small-sized motor
DE4221429A1 (en) * 1991-07-01 1993-01-07 Papst Motoren Gmbh & Co Kg Axially compact direct drive pancake type motor for hard disc memory - has central fixed stator supporting outer rotor assembly on main bearing with permanent magnet ring set into space between rotor and stator and fixed to rotor
JPH05336722A (en) * 1992-04-02 1993-12-17 Fuji Electric Co Ltd Spindle motor for driving magnetic disc
JPH08186953A (en) * 1994-12-28 1996-07-16 Seiko Seiki Co Ltd Spindle equipment
US5694268A (en) * 1995-02-10 1997-12-02 Seagate Technology, Inc. Spindle motor having overmolded stator
JPH1070870A (en) * 1996-08-27 1998-03-10 Mitsubishi Electric Corp Spindle motor
JPH1182508A (en) * 1997-09-09 1999-03-26 Seiko Instr Inc Spindle device, spindle motor, and rotary device adopting spindle motor

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4855853A (en) * 1986-10-15 1989-08-08 Hitachi, Ltd. Actuator for positioning heads in magnetic disc apparatus
JPH01190256A (en) * 1988-01-25 1989-07-31 Matsushita Electric Ind Co Ltd Motor
JPH01291652A (en) * 1988-05-18 1989-11-24 Toshiba Corp Axial gap type brushless motor
JPH03128645A (en) * 1989-10-11 1991-05-31 Mitsubishi Electric Corp Resin injecting device for small-sized motor
DE4221429A1 (en) * 1991-07-01 1993-01-07 Papst Motoren Gmbh & Co Kg Axially compact direct drive pancake type motor for hard disc memory - has central fixed stator supporting outer rotor assembly on main bearing with permanent magnet ring set into space between rotor and stator and fixed to rotor
JPH05336722A (en) * 1992-04-02 1993-12-17 Fuji Electric Co Ltd Spindle motor for driving magnetic disc
JPH08186953A (en) * 1994-12-28 1996-07-16 Seiko Seiki Co Ltd Spindle equipment
US5694268A (en) * 1995-02-10 1997-12-02 Seagate Technology, Inc. Spindle motor having overmolded stator
JPH1070870A (en) * 1996-08-27 1998-03-10 Mitsubishi Electric Corp Spindle motor
JPH1182508A (en) * 1997-09-09 1999-03-26 Seiko Instr Inc Spindle device, spindle motor, and rotary device adopting spindle motor

Non-Patent Citations (7)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 013, no. 483 (E - 839) 2 November 1989 (1989-11-02) *
PATENT ABSTRACTS OF JAPAN vol. 014, no. 079 (E - 0888) 14 February 1990 (1990-02-14) *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 340 (E - 1105) 28 August 1991 (1991-08-28) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 167 (E - 1528) 22 March 1994 (1994-03-22) *
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 11 29 November 1996 (1996-11-29) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 08 30 June 1998 (1998-06-30) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 08 30 June 1999 (1999-06-30) *

Also Published As

Publication number Publication date
AU6228700A (en) 2001-02-19
WO2001010002A2 (en) 2001-02-08
JP2001095213A (en) 2001-04-06

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