公开(公告)号：US20210287840A1

公开(公告)日：2021-09-16

申请号：US17198974

申请日：2021-03-11

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kenji HASHIMOTO

IPC: H01F27/24 ,  H01F27/28 ,  H01F27/29 ,  H01F41/02

Abstract: A winding core includes a winding core portion extending in a length direction; and first and second flange portions respectively provided at first and second end portions of the winding core portion in the length direction, and each having a bottom surface, a top surface on a side opposite to the bottom surface, an inner end surface facing the winding core portion side, and an outer end surface on a side opposite to the inner end surface, with a convex step portion on the top surface side of the outer end surface. The winding core portion has an upper surface facing substantially the same direction as a direction in which the top surface faces. A first straight line passing through the top surface and a second straight line passing through the upper surface intersect outside the outer end surface at an angle of from 0.3 degrees to 5 degrees.

公开(公告)号：US20190156990A1

公开(公告)日：2019-05-23

申请号：US16169685

申请日：2018-10-24

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Akio IGARASHI ,  Yuuji IGARASHI ,  Kenji HASHIMOTO

IPC: H01F27/28 ,  H01F27/24

Abstract: A coil component includes a drum core including a winding core portion and a flange portion disposed on an end portion thereof the winding core portion in its axial direction, a planar core having a lower principal surface, and a wire wound around the winding core portion. The flange portion includes an inner end surface, an outer end surface, a bottom surface, and a top surface. The inner end surface positions the end portion of the winding core portion. The bottom surface links the inner end surface and the outer end surface and placed so as to face a mounting substrate side when being mounted. The lower principal surface of the planar core is fixed to the top surface with an adhesive interposed therebetween. The top surface includes a protrusion with a vertex positioned closer to the inner end surface than to the outer end surface.