Title:
最小の正味径方向力および低いコギングトルクを伴う D.C.ブラシレスモータ
Document Type and Number:
Japanese Patent JP3801642
Kind Code:
B2
Abstract:
A ten pole/twelve slot brushless DC motor for a disk drive spindle includes a base; a cylindrical rotor structure rotating relative to the base and a generally symmetrically slotted stator structure fixed about an axis of rotation. The rotor structure includes a permanent magnet ring structure defining ten permanently magnetized alternating north-south magnet segments. The stator structure includes a ferromagnetic core defining twelve stator slots between twelve stator poles. Coils of insulated wire are wound around the stator poles in one of a plurality of disclosed winding patterns and connected into a series of phases, e.g. three phases.
Inventors:
Fan, ben
Hartman, Albert
Hartman, Albert
Application Number:
JP51971797A
Publication Date:
July 26, 2006
Filing Date:
October 21, 1996
Export Citation:
Assignee:
QUANTUM CORPORATION
International Classes:
H02K1/22; G11B5/012; G11B19/20; H02K3/18; H02K7/08; H02K21/14; H02K21/22; H02K29/03; H02K3/28; H02K5/16; H02K5/173
Domestic Patent References:
| JP2142350A | ||||
| JP62072924A | ||||
| JP6259953A | ||||
| JP5505721A |
Foreign References:
| US4200344 |
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Hidehiko Ito
Yutaka Horii
Toshio Morita
Hidehiko Ito
Yutaka Horii