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Title:
SMALL BRUSHLESS DC MOTOR
Document Type and Number:
Japanese Patent JP2002027722
Kind Code:
A
Abstract:

To achieve a small axial cap brushless DC motor by downsizing a stator yoke.

This brushless motor is provided with a stator, a bearing 6, and a rotor. The stator includes the stator yoke having a ring formed out of a magnetic sheet, and pole teeth 2, 3 cut to be raised in an axial direction on the inner periphery and the outer periphery thereof, and a ring coil 5 disposed so as to be surrounded by the ring part, the pole teeth 2 on the inner periphery, and the pole teeth 3 on the outer periphery. The rotor includes a rotor frame 8 formed out of the magnetic sheet, a disc-like magnet 9 fixed to the rotor frame 8, and a shaft 7 to the rotor frame 8 and supported by the bearing 6. The end surface of the magnet 9, the pole teeth 2 on the inner periphery and the pole teeth part 3 on the outer periphery face axially through a small gap.


Inventors:
IDA OSAMU
Application Number:
JP2000206474A
Publication Date:
January 25, 2002
Filing Date:
July 07, 2000
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
H02K1/02; H02K1/14; H02K21/24; H02K29/08; (IPC1-7): H02K29/08; H02K1/02; H02K1/14; H02K21/24
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)