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公开(公告)号：EP3716298A1
公开(公告)日：2020-09-30
申请号：EP20150443.8
申请日：2020-01-07
申请人： Kyocera Corporation
IPC分类号： H01F17/04 , H01F41/02 , H01F27/255 , H01F27/28
摘要： A core component is made of a sintered body of an inorganic powder, in which the core component includes a columnar winding portion around which a conductive wire is wound, the columnar winding portion having a first axial end and a second axial end and a flange portion integrally formed with the winding portion at both axial ends of the winding portion, in which the columnar winding portion includes, in a cross section orthogonal to an axial center, a first region having a curved outer peripheral surface having a first radius of curvature and a second region having a curved surface having a second radius of curvature, the second radius of curvature is smaller than the first radius of curvature and the first region and the second region are connected with each other via a first projection.
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公开(公告)号：EP3680919A1
公开(公告)日：2020-07-15
申请号：EP20150450.3
申请日：2020-01-07
申请人： Kyocera Corporation
摘要： A core component is made of a sintered body of an inorganic powder, in which the core component includes a columnar winding portion and a flange portion integrally formed with the winding portion at both axial ends of the winding portion, and a cutting level difference (Rδc) of a roughness curve representing a difference between a cutting level at 25% loading length rate in the roughness curve and a cutting level at 75% loading length rate in the roughness curve of a surface of the winding portion is 0.2 µm or more and 2 µm or less.
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公开(公告)号：EP3680924A1
公开(公告)日：2020-07-15
申请号：EP20150455.2
申请日：2020-01-07
申请人： Kyocera Corporation
摘要： A core component is made of a sintered body of an inorganic powder, in which the core component includes a columnar winding portion and a flange portion integrally formed with the columnar winding portion at both axial ends of the columnar winding portion, in which when observed in a cross section perpendicular to an axial direction, a surface layer portion of the columnar winding portion and a surface layer portion of the flange portion have a void occupancy area smaller than a void occupancy area of an inside of the columnar winding portion and of an inside of the flange portion, respectively.
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公开(公告)号：EP3680923A1
公开(公告)日：2020-07-15
申请号：EP20150440.4
申请日：2020-01-07
申请人： Kyocera Corporation
摘要： A core component is made of a sintered body of an inorganic powder, in which the core component includes a columnar winding portion and a flange portion integrally formed with the columnar winding portion at both axial ends of the winding portion, and a gap C, represented by the following Formula, between adjacent voids in the surface layer portion of the columnar winding portion, is 6 to 12 µm. C = L − R where, L is the average value of the distance between the centers of gravity between adjacent voids, and R is the average value of equivalent circle diameters of the voids.
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公开(公告)号：EP3696830A1
公开(公告)日：2020-08-19
申请号：EP20150478.4
申请日：2020-01-07
申请人： Kyocera Corporation
IPC分类号： H01F17/04 , H01F27/255 , H01F27/28 , H01F41/02
摘要： A core component is made of a sintered body of an inorganic powder, in which the core component includes a columnar winding portion including opposite axial ends; a conductive wire having a diameter wound around the columnar winding portion, and a flange portion integrally formed with the winding portion at both axial ends of the winding portion, and the winding portion and the flange portion intersect to form a corner portion with a radius of curvature that is equal to or smaller than the diameter of the conductive wire.
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