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1. WO2022070805 - COIL COMPONENT AND METHOD FOR MANUFACTURING SAME

Publication Number WO/2022/070805
Publication Date 07.04.2022
International Application No. PCT/JP2021/032851
International Filing Date 07.09.2021
IPC
H01F 17/00 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
17Fixed inductances of the signal type
H01F 17/04 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
17Fixed inductances of the signal type
04with magnetic core
H01F 41/04 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
41Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
02for manufacturing cores, coils or magnets
04for manufacturing coils
H01F 27/28 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
27Details of transformers or inductances, in general
28Coils; Windings; Conductive connections
CPC
H01F 17/00
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
17Fixed inductances of the signal type
H01F 17/04
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
17Fixed inductances of the signal type
04with magnetic core
H01F 27/28
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
27Details of transformers or inductances, in general
28Coils; Windings; Conductive connections
H01F 41/04
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
41Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
02for manufacturing cores, coils, or magnets
04for manufacturing coils
H01F 41/12
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
41Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
02for manufacturing cores, coils, or magnets
04for manufacturing coils
12Insulating of windings
Applicants
  • TDK株式会社 TDK CORPORATION [JP]/[JP]
Inventors
  • 鈴木 将典 SUZUKI Masanori
  • ▲高▼橋 延也 TAKAHASHI Nobuya
  • 本橋 叡 MOTOHASHI Akira
  • 藤井 直明 FUJII Naoaki
  • 米山 将基 YONEYAMA Masaki
  • 西川 朋永 NISHIKAWA Tomonaga
Agents
  • 鷲頭 光宏 WASHIZU Mitsuhiro
  • 緒方 和文 OGATA Kazufumi
Priority Data
2020-16426630.09.2020JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) COIL COMPONENT AND METHOD FOR MANUFACTURING SAME
(FR) COMPOSANT DE BOBINE ET SON PROCÉDÉ DE FABRICATION
(JA) コイル部品及びその製造方法
Abstract
(EN) [Problem] To prevent, in a coil component having a structure in which spiral coil patterns are layered, the coil patterns from deforming. [Solution] A coil component 1 is provided with: a coil part C having a structure in which interlayer insulating films 51-55 and coil patterns CP1-CP4 are alternately layered in the axial direction; and magnetic elements M1-M4 that embed therein the coil part C. A radial width L41 of an interlayer insulating film 55 located between a magnetic element M1 positioned in an inner diameter region of the coil part C and the innermost-circumferential turn of a coil pattern CP4 is wider than radial widths L11, L21, L31 of interlayer insulating films 52-54 located between the magnetic element M1 and the innermost-circumferential turns of coil patterns CP1-CP3, respectively. Accordingly, since the width of the interlayer insulating film 55 is set wider on the innermost-circumferential side, the pressure applied, when the magnetic element M1 is embedded in the inner diameter region of the coil part C, to the innermost-circumferential turn of the coil pattern CP4 can be mitigated.
(FR) Le problème décrit par la présente invention est d'empêcher, dans un composant de bobine ayant une structure dans laquelle des motifs de bobine en spirale sont stratifiés, les motifs de bobine de se déformer. La solution selon l'invention porte sur un composant de bobine 1 qui comporte : une partie de bobine C ayant une structure dans laquelle des films isolants inter-couches 51-55 et des motifs de bobine CP1-CP4 sont disposés en alternance dans la direction axiale ; et des éléments magnétiques M1-M4 qui y incorporent la partie de bobine C. Une largeur radiale L41 d'un film isolant intercouche 55 situé entre un élément magnétique M1 positionné dans une région de diamètre interne de la partie de bobine C et la spire circonférentielle interne d'un motif de bobine CP4 est plus large que les largeurs radiales L11, L21, L31 de films isolants inter-couches 52-54 situés entre l'élément magnétique M1 et les spires circonférentielles les plus à l'intérieur des motifs de bobine CP1-CP3, respectivement. En conséquence, étant donné que la largeur du film isolant intercouche 55 est réglée plus large sur le côté circonférentiel le plus à l'intérieur, la pression appliquée, lorsque l'élément magnétique M1 est incorporé dans la région de diamètre interne de la partie de bobine C, à la spire circonférentielle le plus à l'intérieur du motif de bobine CP4 peut être atténuée.
(JA) 【課題】スパイラル状のコイルパターンが積層された構造を有するコイル部品においてコイルパターンの変形を防止する 【解決手段】コイル部品1は、層間絶縁膜51~55とコイルパターンCP1~CP4が軸方向に交互に積層された構造を有するコイル部Cと、コイル部Cを埋め込む磁性素体M1~M4とを備える。コイル部Cの内径領域に位置する磁性素体M1とコイルパターンCP4の最内周ターンの間に位置する層間絶縁膜55の径方向における幅L41は、磁性素体M1とコイルパターンCP1~CP3の最内周ターンの間に位置する層間絶縁膜52~54の径方向における幅L11,L21,L31よりも広い。このように、層間絶縁膜55の幅が最内周側において拡大されていることから、コイル部Cの内径領域に磁性素体M1を埋め込む際に、コイルパターンCP4の最内周ターンに加わる圧力が緩和される。
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