Magnetic element and method of manufacturing the same
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsJunichi Kato, Osamu Inoue, Seiichi Nakatani, Koichi Hirano, Toshiyuki Asahi
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Abstract
A magnetic element including: a composite magnetic member A containing a metallic magnetic powder in an amount of 50-70 vol. % and a thermosetting resin in an amount of 50-30 vol. %; a magnetic member B that is at least one selected from a ferrite sintered body and a pressed-powder magnetic body of a metallic magnetic powder; and a coil. The magnetic element is characterized in that a magnetic path determined by an arrangement of the coil passes the magnetic member A and the magnetic member B in series and the coil is embedded in the magnetic member A. The present invention also provides a method for manufacturing the magnetic element.
Claims7
A magnetic element, comprising:
- a composite A containing a metallic magnetic powder in the amount of 50-70 vol. % with the remainder being a thermosetting resin;
- a magnetic member B that is at least one selected from a ferrite sintered body and a pressed-powder magnetic body of a metallic magnetic powder;
- and
- a coil embedded in the composite A;
- wherein a magnetic path is defined by a closed loop formed by a magnetic flux, the magnetic path being generated by an electric current that flows through the coil, and being determined by an arrangement of the coil, the composite A and the magnetic member B, the closed loop being formed by the magnetic member B and the composite A, and said magnetic path passes through the closed loop of magnetic member B and composite A.
Dependencies are inferred from the claim text.