Patent ID: 7656068
Filing Date: 2010-02-02
Classification: H02K

Abstract:
1. A dynamoelectric rotor comprising: first and second pole cores on which are formed integrally: said first and second pole cores being disposed such that said claw-shaped magnetic pole portions face each other so as to intermesh and leading end surfaces of said boss portions are abutted with each other; a shaft that is press-fitted into said shaft insertion aperture so as to integrate said first and second pole cores; a bobbin that is mounted to said abutted boss portions; and a field coil that is wound onto said bobbin, wherein a cross-sectional shape of said boss portion that is perpendicular to said central axis at a root portion of said core flange portions is an n-sided polygon, and each of said claw-shaped magnetic pole portions faces a side of said cross-sectional shape of said boss portion that is perpendicular to said central axis at said root portions of said core flange portions.