COIL COMPONENT AND METHOD FOR MANUFACTURING THE SAME

To provide a coil component having such a structure that a coil part is embedded by a magnetic element assembly which prevents occurrence of chipping at corner parts of the magnetic element assembly.SOLUTION: A coil component 1 includes a coil part 2, magnetic body layers M11 to M13 arranged in an i...

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Hauptverfasser: KAWAGUCHI YUICHI, NATORI MITSUO, SATO AZUMA
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a coil component having such a structure that a coil part is embedded by a magnetic element assembly which prevents occurrence of chipping at corner parts of the magnetic element assembly.SOLUTION: A coil component 1 includes a coil part 2, magnetic body layers M11 to M13 arranged in an inner diameter region, an outside region and one side in an axial direction of a coil part 2, and a magnetic body layer M20 arranged on the other side in the axial direction of the coil part 2. The magnetic body layers M11 to M13 and M20 are each composed of a composite magnetic material containing a magnetic filler and a binder resin, and percentage contents of the magnetic fillers in the magnetic body layers M11 to M13 are higher than a percentage content of the magnetic filler in the magnetic body layer M20. Thereby, mechanical strength of the magnetic body layer M20 is enhanced, which can prevent occurrence of chipping on the magnetic body layer M20 side.SELECTED DRAWING: Figure 2 【課題】コイル部が磁性素体で埋め込まれた構造を有するコイル部品において、磁性素体の角部における欠けの発生を防止する。【解決手段】コイル部品1は、コイル部2と、コイル部2の内径領域、外側領域及び軸方向における一方側に配置された磁性体層M11~M13と、コイル部2の軸方向における他方側に配置された磁性体層M20とを備える。磁性体層M11~M13,M20は、いずれも磁性フィラーとバインダー樹脂を含む複合磁性材料からなり、磁性体層M11~M13における磁性フィラーの含有率は、磁性体層M20における磁性フィラーの含有率よりも高い。これにより磁性体層M20の機械的強度が高められることから、磁性体層M20側における欠けの発生を防止することが可能となる。【選択図】図2