JPH01138705A - Annular magnetic core - Google Patents
Annular magnetic coreInfo
- Publication number
- JPH01138705A JPH01138705A JP29725287A JP29725287A JPH01138705A JP H01138705 A JPH01138705 A JP H01138705A JP 29725287 A JP29725287 A JP 29725287A JP 29725287 A JP29725287 A JP 29725287A JP H01138705 A JPH01138705 A JP H01138705A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic core
- gap
- annular magnetic
- magnetic
- projection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011162 core material Substances 0.000 claims abstract description 38
- 125000006850 spacer group Chemical group 0.000 claims abstract description 11
- 239000011810 insulating material Substances 0.000 claims abstract description 3
- 229910000808 amorphous metal alloy Inorganic materials 0.000 claims description 3
- 230000000994 depressogenic effect Effects 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 8
- 229920005989 resin Polymers 0.000 abstract description 7
- 239000011347 resin Substances 0.000 abstract description 7
- 238000004804 winding Methods 0.000 abstract description 7
- 239000011248 coating agent Substances 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000843 powder Substances 0.000 abstract description 5
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 239000005300 metallic glass Substances 0.000 abstract description 3
- 239000004033 plastic Substances 0.000 abstract description 3
- 239000003822 epoxy resin Substances 0.000 abstract description 2
- 229920000647 polyepoxide Polymers 0.000 abstract description 2
- 238000007598 dipping method Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 238000009499 grossing Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 iron-silicon-aluminum Chemical compound 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、平滑用チョークコイル等の磁気コアに適した
環状磁心に係るものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an annular magnetic core suitable for a magnetic core such as a smoothing choke coil.
従来、環状磁心の材料と′しては、フェライト、或いは
パーマロイ、鉄、鉄−珪素−アルミニウム合金等の粉末
が使用されたものが主であり、これらのけ心を製造する
場合、材料が有する磁気特性、材料の圧密度、寸法、形
状等を調整して、磁心として適切な磁気特性を有する様
に考慮される為に、磁路上にギャップを形成して磁気特
性を調整することは希れであった。Conventionally, powders such as ferrite, permalloy, iron, and iron-silicon-aluminum alloys have been mainly used as materials for annular magnetic cores. It is rare to adjust the magnetic properties by forming a gap on the magnetic path because it is considered to have the appropriate magnetic properties as a magnetic core by adjusting the magnetic properties, material consolidation density, dimensions, shape, etc. Met.
然るに、近年、電子回路の小型化が要求される様になり
、使用される各種電気部品、磁性部品の小型化が必要に
なってきている。この様な要求から、平滑用チョークコ
イル等の磁心として、高磁束密度を有する珪素鋼板や、
高磁束密度、低１員失の非晶質合金薄板を巻き回して環
状磁心と成した物が使用される様になってきた。これら
金属材料薄板を巻き回して形成される環状磁心では、材
料の透磁率が大である為に、平滑用チョークコイル等の
如く、その透磁率が比較的低いレベルで使用せねばなら
ない場合には、環状磁心の磁路の一部にギャップを形成
し、その透磁率を低下、調整する必要がある。However, in recent years, there has been a demand for miniaturization of electronic circuits, and it has become necessary to miniaturize the various electrical and magnetic components used. Due to these demands, silicon steel sheets with high magnetic flux density,
An annular magnetic core formed by winding amorphous alloy thin plates with high magnetic flux density and low one-member loss has come into use. These annular magnetic cores formed by winding thin plates of metal material have high magnetic permeability, so when they must be used at a relatively low level of magnetic permeability, such as in smoothing choke coils, etc. , it is necessary to form a gap in a part of the magnetic path of the annular magnetic core to reduce and adjust its magnetic permeability.
環状磁心には限らないが、磁路上にギャップが存在する
場合、必ずその部位に漏洩する磁束が存在し、その漏洩
磁束が近隣の磁性部品或は基板上の電子回路等に悪影響
を及ぼす場合があり、回路の正常な動作を妨げたり、該
動作の原因となり、問題視される様になってきた。又、
電子回路が小型化され、部品間距離や部品と基板との距
離が小さくなるにつれ、漏洩磁束の悪影響は更に深刻化
する。Although it is not limited to ring-shaped magnetic cores, if there is a gap on the magnetic path, there will always be magnetic flux leaking at that location, and this leakage flux may have a negative effect on nearby magnetic components or electronic circuits on the board. It has become a problem because it interferes with the normal operation of the circuit or causes the operation. or,
As electronic circuits become smaller and the distances between components and the distances between components and substrates become smaller, the negative effects of leakage magnetic flux become even more serious.
本発明は、上記の点に鑑みてなされたものであり、その
磁路長の一部に漏洩磁束をもたらすギャップがあり、外
周を絶縁物質で塗装された環状磁心であっても、その漏
洩磁束の影響を最小限に防止し得る磁心を従供する事を
目的としたものである。The present invention has been made in view of the above points, and even if there is a gap that causes leakage magnetic flux in a part of the magnetic path length, and the outer periphery is coated with an insulating material, the leakage magnetic flux will be reduced. The purpose is to provide a magnetic core that can minimize the effects of
すなわち、本発明はギャップに挿入するスペーサーの寸
法形状を磁心断面の寸法形状とは異なるものとなし、磁
心製造上の後工程である絶縁塗装後もそのギャップの位
置が、絶縁塗装材の突出部あるいは陥没部として識別出
来る様になした環状磁心である。That is, in the present invention, the size and shape of the spacer inserted into the gap are different from the size and shape of the cross section of the magnetic core, so that even after insulation painting, which is a later process in manufacturing the magnetic core, the position of the gap remains close to the protrusion of the insulation coating material. Alternatively, it is an annular magnetic core that can be identified as a depressed portion.
実施例１
幅５ｍ＋ａ、厚さ約１８〜２３μｍの鉄基非晶質金属薄
帯をトロイダル状に巻回して、内径８ｍｍ、外径１４ｍ
ｍの磁心素材を形成した。この磁心をエポキシ系樹脂で
真空含浸、硬化処理を施した後、磁路に直角な方向にギ
ャップを形成した。形成したギャップに、幅５唾、長さ
３．８ｍｍ、厚さ０．５Ｍのプラスチック製スペーサー
を挿入し、磁心の外周方向に約０．８ ｍだけ前記スペ
ーサーが突出するように配置した。その後、流動層浸漬
法により、平均厚さが０．６ ｗ程度の粉体樹脂コーテ
ィングを施したところ、スペーサ一部は、約０．４ ｍ
程度の樹脂の突起として確認出きた。尚、この程度の寸
法の突起は、巻線作業等に何ら支障がないことは確認し
た。Example 1 An iron-based amorphous metal ribbon with a width of 5 m+a and a thickness of about 18 to 23 μm is wound in a toroidal shape, with an inner diameter of 8 mm and an outer diameter of 14 m.
A magnetic core material of m was formed. After vacuum impregnating and curing the magnetic core with epoxy resin, a gap was formed in a direction perpendicular to the magnetic path. A plastic spacer with a width of 5 mm, a length of 3.8 mm, and a thickness of 0.5 m was inserted into the formed gap, and the spacer was placed so that it protruded by about 0.8 m in the direction of the outer circumference of the magnetic core. After that, a powder resin coating with an average thickness of about 0.6 w was applied using the fluidized bed immersion method, and part of the spacer was coated with a powder resin coating of about 0.4 m.
It was confirmed as a slight resin protrusion. It has been confirmed that the protrusions of this size do not pose any problem in winding work, etc.
実施例２
幅１５閣、厚さ約１８〜２３μｍの鉄基非晶質金属薄帯
をトロイダル状に巻回して、内径２０ｍｍ外径３３ｍｍ
の磁心素材を形成した。この磁心を実施例１と同様の処
理をしてギヤ、ンプを形成した後、幅２０ｍｍ、長さ５
．５１ｆｆｌ、厚さ０．９ ｍｍのプラスチック製スペ
ーサーを前記ギャップに挿入し、スペーサーを、磁心の
外周面から約Ｉｎｍだけ陥没する様に配置した。その後
、流動層浸漬法により、平均厚さが０．８ ｍｍ程度の
粉体樹脂コーティングを施したところ、スペーサ一部は
、約０．５閾程度の樹脂の陥没部として確認出きた。こ
の様な陥没部分のある磁心に於ても巻線作業等に対して
何ら支障がないことは確認した。又、磁心の機械的強度
に付いても、陥没部のない磁心と比し実用上問題となる
ものではなかった。Example 2 An iron-based amorphous metal ribbon with a width of 15 mm and a thickness of about 18 to 23 μm was wound in a toroidal shape to have an inner diameter of 20 mm and an outer diameter of 33 mm.
The magnetic core material was formed. This magnetic core was processed in the same manner as in Example 1 to form a gear and a pump, and then the width was 20 mm and the length was 5 mm.
．． A plastic spacer having a thickness of 51 ffl and a thickness of 0.9 mm was inserted into the gap, and the spacer was placed so as to be recessed from the outer peripheral surface of the magnetic core by about Inm. Thereafter, a powder resin coating with an average thickness of about 0.8 mm was applied by a fluidized bed immersion method, and a portion of the spacer was confirmed as a depression in the resin with a thickness of about 0.5 threshold. It has been confirmed that there is no problem in winding work, etc. even with a magnetic core with such a depressed portion. Furthermore, the mechanical strength of the magnetic core did not pose a practical problem compared to a magnetic core without recesses.
本発明によれば、簡単な工夫に依り、磁心の製造工数を
増すことなく、漏洩磁束をもたらすギャップ部分が識別
可能となり、磁心を実装した時の漏洩磁束の影響を最小
となす様に磁心に巻線作業が出来る様になった。According to the present invention, by a simple device, the gap portion that causes leakage magnetic flux can be identified without increasing the number of man-hours for manufacturing the magnetic core, and the gap portion that causes leakage magnetic flux can be identified when the magnetic core is mounted so as to minimize the influence of leakage magnetic flux. Now I can do winding work.
Claims (4)
し、そのギャップに非磁性体から成るスペーサーが挿入
されており、磁心外面が絶縁物で塗装されて成る環状磁
心に於て、そのギャップの位置に識別用突起部および／
又は陥没部を形成した事を特徴とする環状磁心。1. An annular magnetic core has a gap formed almost perpendicular to the magnetic path direction of the magnetic core, a spacer made of a non-magnetic material is inserted into the gap, and the outer surface of the magnetic core is coated with an insulating material. Identification protrusion and/or
Or an annular magnetic core characterized by forming a depressed portion.
薄板である事を特徴とする特許請求範囲第１項記載の環
状磁心。2. The annular magnetic core according to claim 1, wherein the annular magnetic core material is a toroidally wound amorphous alloy thin plate.
内周方向あるいは高さ方向のいづれか一方以上に突出あ
るいは陥没させ、ギャップ位置を識別出来る様にしたこ
とを特徴とする特許請求範囲第１項記載の環状磁心。3. Insert the spacer into the gap toward the outer circumference of the magnetic core.
The annular magnetic core according to claim 1, wherein the annular magnetic core is protruded or recessed in either the inner circumferential direction or the height direction so that the gap position can be identified.
薄板である事を特徴とする特許請求範囲第３項記載の環
状磁心。4. 4. The annular magnetic core according to claim 3, wherein the annular magnetic core material is a toroidally wound amorphous alloy thin plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29725287A JPH01138705A (en) | 1987-11-25 | 1987-11-25 | Annular magnetic core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29725287A JPH01138705A (en) | 1987-11-25 | 1987-11-25 | Annular magnetic core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01138705A true JPH01138705A (en) | 1989-05-31 |
Family
ID=17844124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29725287A Pending JPH01138705A (en) | 1987-11-25 | 1987-11-25 | Annular magnetic core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01138705A (en) |
-
1987
- 1987-11-25 JP JP29725287A patent/JPH01138705A/en active Pending
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