JPS6447253A - Spindle motor of magnetic disc unit - Google Patents
Spindle motor of magnetic disc unitInfo
- 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
Links
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.
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)
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 |
-
1987
- 1987-08-13 JP JP20238687A patent/JPS6447253A/en active Pending
Cited By (4)
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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