Magneto-generator, method of manufacturing the same and resin molding die assembly for manufacturing the same

摘要

A magneto-generator, a method of manufacturing the same and a resin molding die for manufacturing the same. In the magneto-generator, a guard ring is omitted with the performance of the magneto-generator being enhanced. The magneto-generator is manufactured by making use of a resin molding die ( 21 ) having an outer peripheral surface ( 21 d) to be positioned in opposition to an inner peripheral surface of a flywheel ( 11 ) and projections ( 21 a) provided in the outer peripheral surface ( 21 d) for holding a plurality of magnets ( 12 ) at predetermined positions, respectively. The magnets ( 12 ) are positioned and held stationarily at predetermined positions by the aforementioned projections, respectively, and spaces defined between the resin molding die ( 21 ) and the inner peripheral surface of the flywheel ( 11 ) are filled with a resin. After hardening of the resin, the resin molding die ( 21 ) is detached from the flywheel ( 11 ).