Title:
MOTOR AND DISK DEVICE
Document Type and Number:
Japanese Patent JP2002136071
Kind Code:
A
Abstract:
To provide a motor which generates no cogging but a large torque and can be made in a thinned structure, and a disk device using the motor.
The motor has a coil sheet 4 composed of a foil coil 9 wrapped with a flexible insulation material, a magnet 6 formed cylindrically and magnetized in plurality of polarities, and an inner magnet 20 formed cylindrically with a small diameter and magnetized in a plurality of polarities. The motor disposes the magnet 6 and the inner magnet 20 in a concentric circle keeping a predetermined gap each other, and disposes the coil sheet 4 between the gaps.
Inventors:
TSUNODA TAKESHI
OWAKI HIROHIKO
FUKUDA TATSUO
FURUKAWA FUMINOBU
OWAKI HIROHIKO
FUKUDA TATSUO
FURUKAWA FUMINOBU
Application Number:
JP2000323684A
Publication Date:
May 10, 2002
Filing Date:
October 24, 2000
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G11B19/20; H02K3/26; H02K3/47; H02K16/02; H02K21/12; H02K29/08; (IPC1-7): H02K16/02; G11B19/20; H02K3/26; H02K3/47; H02K21/12; H02K29/08
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)
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