JP5336543B2 - コイル部品 - Google Patents
コイル部品 Download PDFInfo
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- JP5336543B2 JP5336543B2 JP2011100512A JP2011100512A JP5336543B2 JP 5336543 B2 JP5336543 B2 JP 5336543B2 JP 2011100512 A JP2011100512 A JP 2011100512A JP 2011100512 A JP2011100512 A JP 2011100512A JP 5336543 B2 JP5336543 B2 JP 5336543B2
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- 239000004020 conductor Substances 0.000 claims description 109
- 239000002245 particle Substances 0.000 claims description 44
- 229910001004 magnetic alloy Inorganic materials 0.000 claims description 32
- 238000005304 joining Methods 0.000 claims description 9
- 239000010408 film Substances 0.000 description 116
- 238000010438 heat treatment Methods 0.000 description 17
- 238000000034 method Methods 0.000 description 17
- 238000004804 winding Methods 0.000 description 16
- 239000011810 insulating material Substances 0.000 description 13
- 239000002923 metal particle Substances 0.000 description 13
- 229910045601 alloy Inorganic materials 0.000 description 11
- 239000000956 alloy Substances 0.000 description 11
- 239000011230 binding agent Substances 0.000 description 9
- 239000003822 epoxy resin Substances 0.000 description 9
- 230000004927 fusion Effects 0.000 description 9
- 229920000647 polyepoxide Polymers 0.000 description 9
- 239000002904 solvent Substances 0.000 description 9
- 238000005452 bending Methods 0.000 description 8
- 229910019819 Cr—Si Inorganic materials 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000004898 kneading Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 229920001187 thermosetting polymer Polymers 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000011800 void material Substances 0.000 description 3
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 description 2
- 229910018487 Ni—Cr Inorganic materials 0.000 description 2
- 229910002796 Si–Al Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/20—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
- H01F1/22—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
- H01F1/24—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
- H01F1/26—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated by macromolecular organic substances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/33—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials mixtures of metallic and non-metallic particles; metallic particles having oxide skin
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/20—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
- H01F1/22—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
- H01F1/24—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F2003/106—Magnetic circuits using combinations of different magnetic materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus 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
- H01F41/02—Apparatus 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 for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
Description
図1〜図5は、本発明を適用したコイル部品10(一実施形態)を示す。ここでは、説明の便宜上、図2の上、下、左、右、手前、奥をそれぞれ上、下、前、後、左、右と称し、図1、図3及び図4のこれらに相当する向きも同様に称する。
図1〜図4に示したコイル部品10は、磁性コア11と、一対の第1導体膜12及び13と、コイル14と、磁性外装15と、一対の第2導体膜16及び17と、一対の第3導体膜18及び19とを備えている。このコイル部品10のサイズは、例えば、前後寸法が2.5mmで、左右寸法が2.0mmで、上下寸法が1.0mmである。
先ず、磁性コア11用の磁性体ペーストとして、d50(メディアン径)が10μmのFe−Cr−Si合金粒子群が85wt%で、ブチルカルビトール(溶剤)が13wt%で、ポリビニルブチラール(バインダ)が2wt%の磁性体ペーストを用意し、該磁性体ペーストを型及びプレス機を用いて整形し、該整形物に大気中で750℃、2hrの熱処理を施して溶剤及びバインダを消失させ、且つ、各磁性合金粒子の表面に該磁性合金粒子の酸化物膜を形成して、磁性コア11を作製する。
(効果1)前記コイル部品10にあっては、磁性外装15がコイル14の上面及び周囲のみならず磁性コア11の柱状部11bの上面及び板状部11aの側面をも覆っており、しかも、該磁性外装15には多数のボイドVDが内在しているため、外力及び内力に対して緩衝作用を発揮する各ボイドVDによって、磁性コア11の曲げに対する耐性、特に板状部11aの外周部分の曲げに対する耐性を向上させてコイル部品10全体としての曲げ強度を高めることができる。依って、コイル部品10を回路基板等に搭載する時に受ける外力やリフローハンダ付け時に該コイル部品10に生じる熱膨張収縮によって磁性コア11にクラックを生じたり、また、実装後のコイル部品10が熱膨張収縮を生じた時に磁性コア11にクラックを生じたりすること等を未然に防止して、コイル部品10の信頼性を向上できる。
(1)前記一実施形態では、コイル14用の導線として平角線を用い、螺旋状部14aの巻き方向をフラットワイズとし巻き方をα巻きとしたコイル14を示したが、螺旋状部14aの巻き方向はエッジワイズとしても良く、螺旋状部14aの巻き方をα巻き以外の巻き方としても良く、コイル14用の導線として平角線以外の導線(例えば丸線)を用いても良い。要するに、コイル14用の導線の断面形や、導線の巻き方向や巻き方を変えても、前記同様の効果を得ることができる。
Claims (1)
- 板状部と該板状部の上面に設けられた柱状部とを一体に有し、且つ、磁性合金を材料とした磁性コアと、
前記磁性コアの板状部の側面から下面に及ぶように形成された一対の第1導体膜と、
導線が螺旋状に巻かれた螺旋状部と該螺旋状部から引き出された導線一端部及び導線他端部とを一体に有していて、前記螺旋状部を前記磁性コアの柱状部の周囲に配置され、且つ、前記導線一端部を前記第1導体膜の一方に接合され前記導線他端部を前記第1導体膜の他方に接合されたコイルと、
前記磁性コアの柱状部の上面及び板状部の側面と、前記第1導体膜の一方及び他方の側面部分の表面と、前記コイルの螺旋状部、導線一端部、導線一端部の接合部分の表面、導線他端部及び導線他端部の接合部分の表面とをそれぞれ覆うように形成された磁性外装と、
前記磁性外装の側面から該磁性外装の下面を通じて前記磁性コアの板状部の下面に及ぶように、且つ、前記第1導体膜の一方及び他方の下面部分の表面をそれぞれ覆うように形成された一対の第2導体膜と、
前記第2導体膜の一方及び他方の表面をそれぞれ覆うように形成された一対の第3導体膜を備え、
前記第1導体膜の一方、前記第2導体膜の一方及び前記第3導体膜の一方によって第1外部端子が構成され、前記第1導体膜の他方、前記第2導体膜の他方及び前記第3導体膜の他方によって第2外部端子が構成されていると共に、
前記磁性コアは、表面に酸化物膜が形成され、且つ、該酸化物膜を介して相互結合した磁性合金粒子群から成り、
前記磁性外装には多数のボイドが内在している、
ことを特徴とするコイル部品。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011100512A JP5336543B2 (ja) | 2011-04-28 | 2011-04-28 | コイル部品 |
US13/399,794 US8390415B2 (en) | 2011-04-28 | 2012-02-17 | Coil component |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011100512A JP5336543B2 (ja) | 2011-04-28 | 2011-04-28 | コイル部品 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2012234867A JP2012234867A (ja) | 2012-11-29 |
JP5336543B2 true JP5336543B2 (ja) | 2013-11-06 |
Family
ID=47067450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011100512A Active JP5336543B2 (ja) | 2011-04-28 | 2011-04-28 | コイル部品 |
Country Status (2)
Country | Link |
---|---|
US (1) | US8390415B2 (ja) |
JP (1) | JP5336543B2 (ja) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9117580B2 (en) | 2009-02-27 | 2015-08-25 | Cyntec Co., Ltd. | Choke |
JP5930643B2 (ja) * | 2011-09-29 | 2016-06-08 | 太陽誘電株式会社 | 軟磁性合金素体およびそれを用いた電子部品 |
CN103915236A (zh) * | 2014-04-01 | 2014-07-09 | 黄伟嫦 | 一种新型电感及其制造方法 |
US9653205B2 (en) * | 2014-04-30 | 2017-05-16 | Cyntec Co., Ltd. | Electrode structure and the corresponding electrical component using the same and the fabrication method thereof |
US9831023B2 (en) * | 2014-07-10 | 2017-11-28 | Cyntec Co., Ltd. | Electrode structure and the corresponding electrical component using the same and the fabrication method thereof |
CN108701535B (zh) * | 2016-02-01 | 2021-08-13 | 株式会社村田制作所 | 线圈部件及其制造方法 |
JP2018019033A (ja) * | 2016-07-29 | 2018-02-01 | 太陽誘電株式会社 | コイル部品及びその製造方法 |
JP2018182204A (ja) * | 2017-04-19 | 2018-11-15 | 株式会社村田製作所 | コイル部品 |
JP6973234B2 (ja) * | 2018-03-28 | 2021-11-24 | Tdk株式会社 | 複合磁性体 |
EP3828901A4 (en) | 2018-07-25 | 2022-05-04 | Ajinomoto Co., Inc. | MAGNETIC PASTE |
US11837388B2 (en) | 2018-11-13 | 2023-12-05 | Samsung Electro-Mechanics Co., Ltd. | Coil component |
KR102093147B1 (ko) * | 2018-11-26 | 2020-03-25 | 삼성전기주식회사 | 코일 부품 |
US11749441B2 (en) * | 2019-01-11 | 2023-09-05 | Kyocera Corporation | Core component, method of manufacturing same, and inductor |
KR102345107B1 (ko) | 2020-01-08 | 2021-12-30 | 삼성전기주식회사 | 코일 부품 |
KR102409325B1 (ko) * | 2020-05-08 | 2022-06-15 | 삼성전기주식회사 | 코일 부품 |
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2011
- 2011-04-28 JP JP2011100512A patent/JP5336543B2/ja active Active
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2012
- 2012-02-17 US US13/399,794 patent/US8390415B2/en active Active
Also Published As
Publication number | Publication date |
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JP2012234867A (ja) | 2012-11-29 |
US8390415B2 (en) | 2013-03-05 |
US20120274429A1 (en) | 2012-11-01 |
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