Patent ID: 7002280
Filing Date: 2006-02-21
Classification: H02K

Abstract:
1. A bicycle claw-pole generator comprising: a permanent magnet unit extending in a circumferential direction; a coil disposed radially inwardly of the permanent magnet unit; a yoke surrounding the coil, wherein the permanent magnet unit rotates relative to the yoke around an axis, wherein the yoke comprises: wherein each first yoke arm radially inner portion faces a corresponding second yoke arm radially inner portion in the axial direction; wherein the plurality of first yoke arm radially outer portions extend axially toward the second axial side of the coil; wherein the plurality of second yoke arm radially outer portions extend axially toward the first axial side of the coil; and wherein the plurality of first yoke arm radially outer portions are interleaved with the plurality of second yoke arm radially outer portions in a circumferential direction.