COIL COMPONENT AND METHOD FOR MANUFACTURING COIL COMPONENT

• Main Authors: TSUKAMOTO NAOTO, YANAGIDA SHIGEKI, YOSHINO SENA, AIDA TOMOHIKO, GOTO MASASHI, SASAKI YOJI, SASAKI HITOSHI
• Format: Patent
• Language: English; Japanese
• Published: 10.08.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; INDUCTANCES; MAGNETS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS

To provide a coil component which is excellent in magnetic characteristics and contributes to improvement of a yield, and a method for manufacturing the same.SOLUTION: A coil component 1 has: a coil 10; a winding core part 21 where the coil 10 is arranged therearound; a substantially T-shaped core 20 having a collar part 22 formed on a first end 21a in an axial direction of the winding core part 21; and an exterior package 30 which is formed of an exterior material containing magnetic particles and a resin, and seals the coil 10 together with the winding core part 21. On the surface of the core 20, a recess 40 having at least one of a first recess 41 and a second recess 42 is formed. The first recess 41 extends toward a first end 21a from a second end 21b in the axial direction of the winding core part 21, and the second recess 42 extends toward the outside from the inside of the collar part 22.SELECTED DRAWING: Figure 1A 【課題】磁気特性に優れ、歩留まりの向上に寄与するコイル部品およびその製造方法を提供すること。【解決手段】コイル部品１は、コイル１０と、コイル１０が周囲に配置される巻芯部２１と、巻芯部２１の軸方向の第１端２１ａに形成された鍔部２２とを有する略Ｔ字形状のコア２０と、磁性粒子と樹脂とを含む外装材で形成され、コイル１０を巻芯部２１とともに封止する外装体３０と、を有する。コア２０の表面には、第１凹部４１と第２凹部４２の少なくとも一方を有する凹部４０が形成されている。第１凹部４１は、巻芯部２１の軸方向の第２端２１ｂから第１端２１ａに向かって延在し、第２凹部４２は、鍔部２２の内側から外側に向かって延在している。【選択図】図１Ａ