JPH0520607B2 - - Google Patents

Info

Publication number
JPH0520607B2
JPH0520607B2 JP57126123A JP12612382A JPH0520607B2 JP H0520607 B2 JPH0520607 B2 JP H0520607B2 JP 57126123 A JP57126123 A JP 57126123A JP 12612382 A JP12612382 A JP 12612382A JP H0520607 B2 JPH0520607 B2 JP H0520607B2
Authority
JP
Japan
Prior art keywords
shaft
spindle
magnets
ring magnets
fixed
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 - Lifetime
Application number
JP57126123A
Other languages
English (en)
Other versions
JPS5917019A (en
Inventor
Goro Oda
Mitsuo Yamashita
Kyoshi Tomimori
Original Assignee
Tokyo Shibaura Electric Co
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 Tokyo Shibaura Electric Co filed Critical Tokyo Shibaura Electric Co
Priority to JP57126123A priority Critical patent/JPH0520607B2/ja
Publication of JPS5917019A publication Critical patent/JPS5917019A/ja
Publication of JPH0520607B2 publication Critical patent/JPH0520607B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/18Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C39/00Relieving load on bearings
    • F16C39/06Relieving load on bearings using magnetic means
    • F16C39/063Permanent magnets
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B26/00Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating
    • G02B26/08Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating for controlling the direction of light
    • G02B26/10Scanning systems
    • G02B26/12Scanning systems using multifaceted mirrors
    • G02B26/121Mechanical drive devices for polygonal mirrors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/167Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
    • H02K5/1677Means 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K7/00Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08Structural association with bearings
    • H02K7/09Structural association with bearings with magnetic bearings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2370/00Apparatus relating to physics, e.g. instruments
    • F16C2370/20Optical, e.g. movable lenses or mirrors; Spectacles
    • F16C2370/22Polygon mirror
JP57126123A 1982-07-20 1982-07-20 Expired - Lifetime JPH0520607B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57126123A JPH0520607B2 (ja) 1982-07-20 1982-07-20

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP57126123A JPH0520607B2 (ja) 1982-07-20 1982-07-20
US06/513,795 US4552417A (en) 1982-07-20 1983-07-14 Polygonal type optical deflector
DE19833325984 DE3325984C2 (ja) 1982-07-20 1983-07-19

Publications (2)

Publication Number Publication Date
JPS5917019A JPS5917019A (en) 1984-01-28
JPH0520607B2 true JPH0520607B2 (ja) 1993-03-22

Family

ID=14927216

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57126123A Expired - Lifetime JPH0520607B2 (ja) 1982-07-20 1982-07-20

Country Status (3)

Country Link
US (1) US4552417A (ja)
JP (1) JPH0520607B2 (ja)
DE (1) DE3325984C2 (ja)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4734606A (en) * 1985-11-20 1988-03-29 Hajec Chester S Electric motor with ferrofluid bearing
JPS6388314A (en) * 1986-09-30 1988-04-19 Toshiba Corp Dynamic pressure air bearing
DE3818193A1 (de) * 1988-05-28 1989-12-07 Asea Brown Boveri Spindel mit elektromotorischem einzelantrieb
CA2027225A1 (en) 1989-10-27 1991-04-28 Donald James Macleod Spindle motor assembly for disc drives
US5019738A (en) * 1990-07-16 1991-05-28 Lincoln Laser Company Self-pressurizing gas supported surface-roughness bearing
US5036235A (en) * 1990-07-25 1991-07-30 Xerox Corporation Brushless DC motor having a stable hydrodynamic bearing system
JPH04307108A (en) * 1991-04-04 1992-10-29 Ebara Corp Hydrodynamic bearing unit
JPH08223858A (ja) * 1994-12-15 1996-08-30 Canon Inc インナーロータモータ
JP3578434B2 (ja) * 1995-09-19 2004-10-20 キヤノン株式会社 動圧気体軸受装置および光偏向走査装置
JPH1198773A (ja) * 1997-09-26 1999-04-09 Minebea Co Ltd 磁気ディスク駆動用モータの製造方法
DE19847347C2 (de) 1998-10-14 2001-03-29 Ldt Gmbh & Co Magnetlager
JP2000295816A (ja) * 1999-04-02 2000-10-20 Seiko Instruments Inc モータ、モータの製造方法、及び回転体装置
JP2003307214A (ja) * 2002-04-16 2003-10-31 Citizen Watch Co Ltd 輔受装置およびこの軸受装置を用いたモータ
US6972500B2 (en) 2003-03-26 2005-12-06 Keihin Corporation Electromagnetic actuator
JP3845421B2 (ja) * 2004-03-23 2006-11-15 株式会社ケーヒン 電磁式アクチュエータ
JP2006187061A (ja) * 2004-12-27 2006-07-13 Matsushita Electric Ind Co Ltd スピンドルモータ
CN101294601A (zh) * 2007-04-25 2008-10-29 富准精密工业(深圳)有限公司 动压轴承结构及采用该动压轴承结构的散热风扇
DE202009012924U1 (de) * 2009-09-25 2010-01-14 Precitec Kg Einschub zur Halterung einer Optik in einem Laserbearbeitungskopf sowie ein Laserbearbeitungskopf
CN103212795B (zh) * 2013-02-04 2015-08-19 张立国 一种基于空心电主轴的激光光束旋转装置
JP6286277B2 (ja) 2014-05-12 2018-02-28 日本電産コパル電子株式会社 流体動圧軸受、モータ、光偏向器
CN105202025B (zh) * 2015-09-12 2017-09-15 北京科技大学 一种旋转调制径向球面纯电磁磁轴承

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55119219A (en) * 1979-03-06 1980-09-12 Matsushita Electric Ind Co Ltd Rotation transmitting device
JPS5620830A (en) * 1979-07-26 1981-02-26 Matsushita Electric Ind Co Ltd Rotation transmitting device

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1919522A (en) * 1930-04-21 1933-07-25 Lipman Patents Corp Electric motor
US3004180A (en) * 1956-04-23 1961-10-10 Air Glide Inc Fluid supported rotor
DE1082977B (de) * 1956-08-25 1960-06-09 Siemens Ag Anordnung zur Gewinnung von Wechselstroemen mittlerer Frequenz, insbesondere zur Erzeugung von Ultraschall grosser Leistung
FR1226177A (fr) * 1959-05-30 1960-07-08 Air Glide Machines dynamoélectriques
FR1226129A (fr) * 1959-05-30 1960-07-08 Air Glide Machine dynamo-électrique
DE1869906U (de) * 1961-06-23 1963-04-04 Heliowatt Werke Anordnung zur magnetischen entlastung der lager von zaehlern od. dgl.
JPS501759U (ja) * 1973-05-04 1975-01-09
US4043612A (en) * 1975-06-06 1977-08-23 Ampex Corporation Bearing structure
US4187452A (en) * 1975-08-27 1980-02-05 International Business Machines Corporation Electromechanical torsional oscillator with resonant frequency and amplitude control
JPS5589839U (ja) * 1978-12-14 1980-06-21
US4332428A (en) * 1979-01-16 1982-06-01 Matsushita Electric Industrial Co., Ltd. Rotary mechanism with axial bearings
JPS5789357U (ja) * 1980-11-17 1982-06-02
JPS5843421A (en) * 1981-09-09 1983-03-14 Toshiba Corp Optical deflector for rotary mirror
JPS5892516U (ja) * 1981-12-18 1983-06-23

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55119219A (en) * 1979-03-06 1980-09-12 Matsushita Electric Ind Co Ltd Rotation transmitting device
JPS5620830A (en) * 1979-07-26 1981-02-26 Matsushita Electric Ind Co Ltd Rotation transmitting device

Also Published As

Publication number Publication date
DE3325984C2 (ja) 1987-02-12
DE3325984A1 (de) 1984-02-02
US4552417A (en) 1985-11-12
JPS5917019A (en) 1984-01-28

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