Method of producing a field magnet for a DC motor and a field magnet for a DC motor

摘要

A method of producing a field magnet for a DC motor is disclosed. A molding material is casted into a molding space which is between outer and inner molds. Field poles are formed by magnetizing poles on the outer peripheral surface of the inner mold, in portions which oppose the magnetizing poles. A magnetic path which connects the field poles with each other is formed in a thickness portion of the molding material by powder of a ferromagnetic material in the molding material.