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1. (EP3125259) MAGNETIC ELEMENT
注意: このテキストは、OCR 処理によってテキスト化されたものです。法的な用途には PDF 版をご利用ください。
Claims

1. A magnetic element (1) comprising a coil (4); and a magnetic body (2, 3) which allows a magnetic flux generated by said coil (4) to pass therethrough, said coil (4) being disposed inside said magnetic body (2, 3) and enclosed in said magnetic body (2, 3),
wherein said magnetic body (2, 3) comprises a compression molded magnetic body (2) disposed at a portion generating iron loss-caused heat to a high extent or a portion inferior in heat dissipation performance; and an injection molded magnetic body (3) disposed at a portion other than said portion where said compression molded magnetic body (2) is disposed; and said compression molded magnetic body (2) and said injection molded magnetic body (3) are combined with each other,
wherein said compression molded magnetic body (2) is columnar; said compression molded magnetic body (2) is disposed at an inside diameter side of said coil (4); said injection molded magnetic body (3) is disposed at an outside diameter side of said coil (4); said coil (4) is formed by winding a winding around a circumference of said compression molded magnetic body (2) ; and both end surfaces (2a) of the column which is said compression molded magnetic body (2) are exposed to a surface of said magnetic element (1).
  2. A magnetic element according to claim 1, wherein of said compression molded and injection molded magnetic bodies (2, 3), at least said injection molded magnetic body (3) is a combined body formed by combining two halves, of said injection molded magnetic body (3), obtained by bisection made along an intermediate line (5) at an intermediate position of the injection molded magnetic body (3) in an axial direction of said coil (4) with each other.
  3. A magnetic element according to claim 2, wherein said compression molded magnetic body (2) has two halves obtained by bisection made along an intermediate line (5) at an intermediate position of the compression molded magnetic body (2) in an axial direction of said coil (4) and has a void portion (6) inside said magnetic body (1) between the two halves of said compression molded magnetic body (2).