Title:
ARMATURE CORE OF DYNAMOELECTRIC MACHINE
Document Type and Number:
Japanese Patent JP2001178034
Kind Code:
A
Abstract:
To reduce loss in an inner spacer, and, further, effectively avoid the temperature rise of the inner spacer itself.
An inner spacer 11, made of magnetic metal, is provided in an armature core, composed of punched core plates 3. A plurality of recessed grooves 12 are formed on respective surfaces of the inner spacer 11. The recessed grooves 12 are extended from teeth 4 side edge end of the armature core toward the outer circumference of the armature core. An electrical resistance against eddy currents C are increased by the recessed grooves 11, so that an eddy current loss can be reduced.
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Inventors:
FUJITA MASASHI
IKEDA HIROSHI
TOKUMASU TADASHI
KAKIUCHI MIKIO
IKEDA HIROSHI
TOKUMASU TADASHI
KAKIUCHI MIKIO
Application Number:
JP36224299A
Publication Date:
June 29, 2001
Filing Date:
December 21, 1999
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
H02K1/20; (IPC1-7): H02K1/20
Attorney, Agent or Firm:
Kei Mitani (1 outside)