COIL COMPONENT

• Main Authors: KONDO KENTA, MARUSAWA HIROSHI, TEI HIROYUKI
• Format: Patent
• Language: English; Japanese
• Published: 18.04.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; INDUCTANCES; MAGNETS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS

To provide a coil component having a core and a plate member adhering to each other firmly, moreover, having low magnetic resistance and good product characteristics.SOLUTION: A coil component 1 comprises a winding core 3, a core 2 having flanges 4 and 5 at both ends of the winding core, a plate member 6 stretching between the two flanges, and an adhesion part 7 between the flanges and the plate member. The adhesion part has resin and magnetic powder including a first particle with a diameter between 0.1 μm and 2.0 μm and a second particle with a diameter between 3.0 μm and 8.0 μm. A ratio of the first particles to the total magnetic particles is 0.11 to 0.80. A ratio of the second particles to the total magnetic particles is 0.19 to 0.89. A ratio of the first and the second particles to the total magnetic particles is 0.84 or more. A ratio of a magnetic particle area to an adhesion area of a cross-section of the adhesion part is 25.0% or more.SELECTED DRAWING: Figure 1 【課題】コアと板部材との固着力を高くしつつ、さらに、磁気抵抗が低く、製品特性の良好なコイル部品を提供する。【解決手段】コイル部品１において、巻芯部３と、巻芯部の両端部に設けられた鍔部４、５を有するコア２と、２つの鍔部をかけ渡すように設けられた板部材６と、鍔部と板部材の間に設けられた接着部７とを備える。接着部は、樹脂と磁性粉末とを含み、磁性粉末は、粒径が０．１μｍ以上２．０μｍ以下の第１粒子と、粒径が３．０μｍ以上８．０μｍ以下の第２粒子とを含み、磁性粉末の全粒子数に対する、第１粒子数の割合が、０．１１以上０．８０以下で、磁性粉末の全粒子数に対する、第２粒子数の割合が、０．１９以上０．８９以下で、磁性粉末の全粒子数に対する、第１粒子数と第２粒子数との合計の割合が、０．８４以上で、接着部断面の接着部面積に対する、磁性粉末の面積の割合が、２５．０％以上である。【選択図】図１