Patent ID: 7166942
Filing Date: 2007-01-23
Classification: H02K

Abstract:
1. A magneto-generator comprising: a bowl-shaped flywheel that is formed of a circumferential wall, a sidewall on the side of one end of said circumferential wall, and an opening on the other side of said circumferential wall, and that is fixed to a rotary shaft to rotate; a plurality of magnets that are disposed being bonded to an inner circumferential surface of said flywheel; and a magneto coil that is disposed in said flywheel being opposed to said magnets and coaxial with said flywheel, and that is caused to generate an electric power by the action of electromagnetic induction with said magnets; said magneto coil being cooled with a cooling medium to be supplied from the opening side of said flywheel; wherein an open gap is formed in an axial direction of said flywheel between said adjacent magnets, said open gap for receiving said cooling medium; and an annular magnet holder is provided in such a manner as to have an annular part that is bonded to an inner circumferential surface on the opening side of said flywheel and to the opening side of said flywheel of each magnet to close said opening side of said open gap between said magnets.