Patent Number: 7,786,641

Title: Magnetic member, rotor and motor

Abstract: In the present invention, since gaps respectively provided at one ends of a field magnet through-hole respectively extend toward the other ends passing on the side of a periphery with respect to the field magnet through-hole, the radial dimension of the magnetic member in this portion can be made smaller than the center of magnetic poles, so that the difference in thickness of the magnetic member in the radial direction between the border of magnetic poles and the magnetic poles can be reduced. Accordingly, the asymmetry of the configuration of a rotor is not absolutely necessary, and the outer surface does not need to be depressed for reducing the torque ripple.

Inventors: Nishijima; Kiyotaka (Shiga, JP)

Assignee: Daikin Industries, Ltd.

International Classification: H02K 1/27 (20060101)

Expiration Date: 8/31/12018