Patent ID: 7696658
Filing Date: 2010-04-13
Classification: H02K

Abstract:
1. A magnet generator comprising: a bowl-shaped flywheel which is formed of a cylindrical portion and a bottom portion connected to the cylindrical portion, a plurality of magnets which are arranged on an inner peripheral surface of the cylindrical portion of said flywheel, and a power generation coil which is disposed in opposition to said magnets within said flywheel to generate power under an electromagnetic induction action with said magnets, wherein said flywheel has a plurality of vent holes in the bottom portion thereof, and at least one of said vent holes is provided with a curved hole base part in a hole base part on the outer side of the flywheel, wherein the cross-section of the hole base part is curved, and wherein an edge of the curved hole base part is angularly offset from a centerline of the vent hole in a rotation direction of said flywheel.