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Patent Searching and Data


Title:
ROTOR FOR ROTATING ELECTRICAL MACHINES AND ROTATING ELECTRICAL MACHINE
Document Type and Number:
Japanese Patent JP2009153236
Kind Code:
A
Abstract:

To provide a rotor for rotating electrical machines whose resistance to centrifugal force can be enhanced and to provide a rotating electrical machine.

The rotor 12 of a rotating electrical machine 10 includes a magnetic steel sheet laminate 16 obtained by laminating multiple magnetic steel sheets 14 in the axial direction. Each magnetic steel sheet is provided with a void 22 in a position away outward from the rotation center in the radial direction. Each magnetic steel sheet 14 has a radial bridge portion 26 extending in the radial direction between voids 22 arranged side by side in the circumferential direction. Residual compressive stress is applied to rounded portions R 32, 34 at both ends of each radial bridge portion 26 in the radial direction.


Inventors:
MIZUNO SACHIHIRO
HAYAKAWA KISABURO
NISHIZAWA HIROYUKI
Application Number:
JP2007326322A
Publication Date:
July 09, 2009
Filing Date:
December 18, 2007
Export Citation:
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Assignee:
TOYOTA CENTRAL RES & DEV
International Classes:
H02K1/24; H02K1/22; H02K1/27
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazunori