JPS6412126A - Rotary device - Google Patents

Rotary device

Info

Publication number
JPS6412126A
JPS6412126A JP16242387A JP16242387A JPS6412126A JP S6412126 A JPS6412126 A JP S6412126A JP 16242387 A JP16242387 A JP 16242387A JP 16242387 A JP16242387 A JP 16242387A JP S6412126 A JPS6412126 A JP S6412126A
Authority
JP
Japan
Prior art keywords
rotor
magnet
outside
cylindrical portion
fixed portion
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.)
Pending
Application number
JP16242387A
Other languages
Japanese (ja)
Inventor
Masaki Goto
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.)
Nidec Instruments Corp
Original Assignee
Sankyo Seiki Manufacturing Co 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 Sankyo Seiki Manufacturing Co Ltd filed Critical Sankyo Seiki Manufacturing Co Ltd
Priority to JP16242387A priority Critical patent/JPS6412126A/en
Publication of JPS6412126A publication Critical patent/JPS6412126A/en
Pending legal-status Critical Current

Links

Landscapes

  • Mechanical Optical Scanning Systems (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

PURPOSE:To restrain vertical vibration of a rotor in a rotary device for a polygon mirror or the like by forming a substantially closed space by the rotor and a fixed portion rotatably supporting the rotor, and providing an air hole for a damper, which is connected to the outside. CONSTITUTION:A rotor 2 integral with a polygon mirror 1 is provided with a yoke 18 and a driving magnet 15 fixed to the inner periphery of a large cylindrical portion 2a, rotatably supported by a fixed portion 3 and driven to rotate by a stator 7 while being put in the floating state by magnets 9, 17, 22 for floating and a thrust magnetic bearing. A closed space A is formed by the rotor 2, a base 4 of the fixed portion 3 and a frame 5. Air holes B, B' for a damper, which connect the space with the outside, are disposed between a yoke 13 and the magnet 9, a hole of the magnet 9 and the outside of a shaft 6, the magnets 9 and 22, the magnet 22 and a small cylindrical portion 2b and a large cylindrical portion 2a and a dynamic pressure shaft surface 5a, thereby restraining the vertical vibration of the rotor 2 due to magnetic disturbance. Thus, damage of the bearing can be prevented.
JP16242387A 1987-07-01 1987-07-01 Rotary device Pending JPS6412126A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16242387A JPS6412126A (en) 1987-07-01 1987-07-01 Rotary device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16242387A JPS6412126A (en) 1987-07-01 1987-07-01 Rotary device

Publications (1)

Publication Number Publication Date
JPS6412126A true JPS6412126A (en) 1989-01-17

Family

ID=15754320

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16242387A Pending JPS6412126A (en) 1987-07-01 1987-07-01 Rotary device

Country Status (1)

Country Link
JP (1) JPS6412126A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0367310U (en) * 1989-11-07 1991-07-01
JPH04119419U (en) * 1991-04-09 1992-10-26 株式会社三協精機製作所 Polygon mirror rotation drive device
JPH05292695A (en) * 1992-04-02 1993-11-05 Shinko Electric Co Ltd Outer rotor type high-speed electric rotating machine
JPH0654023U (en) * 1992-12-22 1994-07-22 株式会社三協精機製作所 Mirror mounting structure for rotating device
US5598291A (en) * 1993-09-24 1997-01-28 Ebara Corporation Polygon mirror mounting structure
US5716036A (en) * 1995-03-17 1998-02-10 Ebara Corporation Mounting structure for mounting a polygon mirror
US6504279B1 (en) 1998-05-27 2003-01-07 Precision Motors Deutsche Minebea Gmbh Motor mount for small high speed motors

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0367310U (en) * 1989-11-07 1991-07-01
JPH04119419U (en) * 1991-04-09 1992-10-26 株式会社三協精機製作所 Polygon mirror rotation drive device
JPH05292695A (en) * 1992-04-02 1993-11-05 Shinko Electric Co Ltd Outer rotor type high-speed electric rotating machine
JPH0654023U (en) * 1992-12-22 1994-07-22 株式会社三協精機製作所 Mirror mounting structure for rotating device
US5598291A (en) * 1993-09-24 1997-01-28 Ebara Corporation Polygon mirror mounting structure
US5716036A (en) * 1995-03-17 1998-02-10 Ebara Corporation Mounting structure for mounting a polygon mirror
US6504279B1 (en) 1998-05-27 2003-01-07 Precision Motors Deutsche Minebea Gmbh Motor mount for small high speed motors

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