US 12,033,781 B2
Core for inductive element, and inductive element
Markus Stark, Krautheim (DE)
Assigned to Würth Elektronik eiSos GmbH & Co. KG, Waldenburg (DE)
Appl. No. 16/967,011
Filed by Würth Elektronik eiSos GmbH & Co. KG, Waldenburg (DE)
PCT Filed Oct. 9, 2019, PCT No. PCT/EP2019/077405
§ 371(c)(1), (2) Date Aug. 3, 2020,
PCT Pub. No. WO2020/083651, PCT Pub. Date Apr. 30, 2020.
Claims priority of application No. 102018218042.3 (DE), filed on Oct. 22, 2018.
Prior Publication US 2021/0383957 A1, Dec. 9, 2021
Int. Cl. H01F 27/26 (2006.01); H01F 27/24 (2006.01)
CPC H01F 27/24 (2013.01) 15 Claims
OG exemplary drawing
 
1. A core for an inductive element, comprising
at least a first side part, a middle part and a second side part,
the middle part including a central portion defining a central portion axis, a first edge portion extending parallel to the central portion axis, and a second edge portion extending parallel to the central portion axis, wherein the central portion is between the first and second edge portions,
further wherein the first side part, the middle part and the second side part are positioned in order along the central portion axis; and
at least one plastic component configured to receive the first edge portion, the second edge portion and the middle portion therethrough such that the plastic component is at least between the central portion and the first edge portion and/or at least between the central portion and the second edge portion, in order to adjust a stray capacitance of the inductive element by suitable choice of the dielectric constant εr of the plastic used for the plastic component and to influence a secondary magnetic flux of the inductive element by suitable choice of the relative permeability μr of the plastic used for the plastic component,
wherein the plastic component is formed as a plate-like or board-like web arranged perpendicularly to the central portion of the middle part, the first edge portion and the second edge portion, and comprises three passage openings for receiving the central portion of the middle part, the first edge portion and the second edge portion.