JPS6447253A - Spindle motor of magnetic disc unit - Google Patents

Spindle motor of magnetic disc unit

Info

Publication number
JPS6447253A
JPS6447253A JP20238687A JP20238687A JPS6447253A JP S6447253 A JPS6447253 A JP S6447253A JP 20238687 A JP20238687 A JP 20238687A JP 20238687 A JP20238687 A JP 20238687A JP S6447253 A JPS6447253 A JP S6447253A
Authority
JP
Japan
Prior art keywords
magnet
rotary driving
rotary
stator coil
spindle motor
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
JP20238687A
Other languages
Japanese (ja)
Inventor
Toshiaki Hattori
Hiroyuki Kuno
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP20238687A priority Critical patent/JPS6447253A/en
Publication of JPS6447253A publication Critical patent/JPS6447253A/en
Pending legal-status Critical Current

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Landscapes

  • Brushless Motors (AREA)

Abstract

PURPOSE:To prevent the generation of axial vibration due to the slippage of a magnetic center by forming such a construction that a magnet section for rotary driving and a magnet section for rotation detection are integrated into a unit. CONSTITUTION:A magnet 30 is mounted to a yoke 21 provided to the inside of a spindle-hub 11, and the first magnet 30(a) and the second magnet 30(b) are integrated into a unit. Rotary driving of the spindle-hub 11 is made by interactions of the first magnet 30(a) for rotary driving and a stator coil 17. Therefore, rotary is made in a state of putting together the magnetic centers of the first magnet 30(a) for rotary driving and the stator coil 17, and a rotary position signal can be outputted by the second magnet 30(b). Accordingly, the stabilized rotary driving can be obtained by interaction only in the circumferential direction with the stator coil 17 without adding force to the direction of a shaft 12 due to the slippage of the magnetic center.
JP20238687A 1987-08-13 1987-08-13 Spindle motor of magnetic disc unit Pending JPS6447253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20238687A JPS6447253A (en) 1987-08-13 1987-08-13 Spindle motor of magnetic disc unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20238687A JPS6447253A (en) 1987-08-13 1987-08-13 Spindle motor of magnetic disc unit

Publications (1)

Publication Number Publication Date
JPS6447253A true JPS6447253A (en) 1989-02-21

Family

ID=16456633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20238687A Pending JPS6447253A (en) 1987-08-13 1987-08-13 Spindle motor of magnetic disc unit

Country Status (1)

Country Link
JP (1) JPS6447253A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02164255A (en) * 1988-12-15 1990-06-25 Matsushita Electric Works Ltd Brushless motor
JPH04309414A (en) * 1991-04-09 1992-11-02 Daikin Ind Ltd Method and device for positioning work in press brake system
JPH0544335U (en) * 1991-11-19 1993-06-15 東洋鋼鈑株式会社 Plate reversing machine
JP2009197729A (en) * 2008-02-22 2009-09-03 Mitsubishi Electric Corp Rotor of motor for pump, motor for pump, pump, and method for manufacturing rotor of motor for pump

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02164255A (en) * 1988-12-15 1990-06-25 Matsushita Electric Works Ltd Brushless motor
JPH04309414A (en) * 1991-04-09 1992-11-02 Daikin Ind Ltd Method and device for positioning work in press brake system
JPH0544335U (en) * 1991-11-19 1993-06-15 東洋鋼鈑株式会社 Plate reversing machine
JP2009197729A (en) * 2008-02-22 2009-09-03 Mitsubishi Electric Corp Rotor of motor for pump, motor for pump, pump, and method for manufacturing rotor of motor for pump

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