JPS62224909A - Magnetic core - Google Patents
Magnetic coreInfo
- Publication number
- JPS62224909A JPS62224909A JP6709686A JP6709686A JPS62224909A JP S62224909 A JPS62224909 A JP S62224909A JP 6709686 A JP6709686 A JP 6709686A JP 6709686 A JP6709686 A JP 6709686A JP S62224909 A JPS62224909 A JP S62224909A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic core
- case
- magnetic
- vibration
- core
- 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.)
- Granted
Links
- 229910001004 magnetic alloy Inorganic materials 0.000 claims abstract description 9
- 230000004907 flux Effects 0.000 claims description 5
- 229910000808 amorphous metal alloy Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 4
- 230000002238 attenuated effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 239000007767 bonding agent Substances 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 229910000976 Electrical steel Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 150000003377 silicon compounds Chemical class 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Coils Or Transformers For Communication (AREA)
Abstract
Description
【発明の詳細な説明】 （発明の技術分野） 本発明はケースに収納された磁心に関する。[Detailed description of the invention] (Technical field of invention) The present invention relates to a magnetic core housed in a case.
（発明の技術的背景とその同題点）
従来、磁性合金薄体を巻回あるいは打法後積層した磁心
を場合にＪ：り熱処理し、その後、絶縁および外部から
の衝撃に対する保護のためにケースに収納している。こ
の場合、従来は磁心とケース間には磁心の防錆および固
定のためにシリコンコンパウンド等の緩衝材を充填して
いる。(Technical Background of the Invention and the Same Subject) Conventionally, in the case of a magnetic core made of a thin magnetic alloy that has been wound or laminated after being hammered, it is heat-treated and then heat-treated for insulation and protection against external impact. It is stored in a case. In this case, conventionally, a cushioning material such as a silicon compound is filled between the magnetic core and the case to prevent rust and fix the magnetic core.
磁性合金薄体をチョークコイル用コアとして用いる際に
おいても、同様に磁性合金薄体を巻回、あるいは打法後
積層した磁心を場合により熱処理し、その後樹脂の含浸
硬化処理により薄体を固着してギャップ形成切断を行っ
ている。When using a magnetic alloy thin body as a core for a choke coil, the thin magnetic alloy body is similarly wound, or the laminated magnetic core is optionally heat-treated after being struck, and then the thin body is fixed by resin impregnation hardening treatment. gap-forming cutting.
このギャップ部に絶縁紙を挿入した後前記と同様にケー
スに収納している。After inserting an insulating paper into this gap, it is stored in a case in the same manner as above.
しかし、このにうにして得られたチョークコイル用コア
をスイッチング電源用部品として用いた場合、実動時の
スイッチング周波数、または負荷の変動周波数が可聴周
波数の領域、例えばｉｏｏ＋＋ｚ〜２０ＫＩＩＺにおい
て耳ぎわすな騒音を発生づ゛るという現象を生ずること
があった。特に１０ＫＧ以上の飽和磁束密度を右する非
晶質磁性合金を用いた場合は他の材料、例えばケイ素鋼
板あるいはフェライトを用いた場合に比べて音の発生が
大きかった。この騒音は、使用時に不快な音源となると
ともに、隣接する部品に振動等の悪影響をおよぼすおそ
れがあった。However, when the choke coil core obtained in this way is used as a component for a switching power supply, the switching frequency during actual operation or the load fluctuation frequency is in the audible frequency range, for example, ioo++z to 20KIIZ, and the noise is loud. In some cases, this may cause a phenomenon in which a large amount of noise is generated. In particular, when an amorphous magnetic alloy with a saturation magnetic flux density of 10 KG or more was used, the sound generation was greater than when other materials such as silicon steel plate or ferrite were used. This noise becomes an unpleasant sound source during use, and may have a negative impact on adjacent parts, such as vibration.
（発明の目的）
本発明は、実動的に音の発生が少ない磁心を提供するこ
とを目的とする。(Objective of the Invention) An object of the present invention is to provide a magnetic core that generates less noise in actual operation.
（発明の概要）
本発明者らは、上記目的を達成するために磁心とケース
間の関係に着目し研究を重ねた結果、磁心は印加１ａ場
の変化に対して敏感に反応する磁歪により振動し、この
磁歪による振動が充填物を介してケースに伝わり音が発
生することを見い出した。発明者らはこの知見に基づき
磁心とケース間に空間部を設り、空間部に充ｊ貢物がな
い場合、音を発生しにくくなるという現象を新たに見い
出し本発明にいたった。また、本発明は高飽和磁束密度
を右する磁性合金薄帯よりなる磁心に対して特に有効で
あることを見い出した。(Summary of the Invention) In order to achieve the above object, the present inventors focused on the relationship between the magnetic core and the case, and as a result of repeated research, the magnetic core vibrates due to magnetostriction that responds sensitively to changes in the applied 1a field. However, it was discovered that vibrations caused by this magnetostriction are transmitted to the case through the filling, producing sound. Based on this knowledge, the inventors provided a space between the magnetic core and the case, and discovered a new phenomenon that when there is no material in the space, it becomes difficult to generate sound, leading to the present invention. It has also been found that the present invention is particularly effective for magnetic cores made of magnetic alloy ribbons that exhibit high saturation magnetic flux density.
すなわち、本発明の磁心は、磁性合金薄体にりなる磁心
を前記磁心を収納するケース間に空間部を介して固定し
てなるものである。That is, the magnetic core of the present invention is formed by fixing a magnetic core made of a thin magnetic alloy through a space between cases that house the magnetic core.
磁心とケース間に空間部を設りることにより実装中のケ
ース中の磁心の振動、およびそれに伴なう音は空間部を
介して減衰され、かつケースに直接伝わりにくくなる。By providing a space between the magnetic core and the case, vibrations of the magnetic core in the case during mounting and accompanying sound are attenuated through the space and are less likely to be transmitted directly to the case.
したがってケースは振動を起こさず音も発生しにくくな
る。磁心とケースとの固定は、例えば接着剤を用いて空
間部を設（プるように少なくとも１箇所以上固定して行
う。固定個所は少ないはど磁心の振動がケースには直接
伝わりにくい。また、外部からの衝撃に対する強度を有
するためには、複数個所固定することが好ましい。接着
剤は、実効時の磁心の発熱に耐え（ｑるものを使用する
。Therefore, the case does not vibrate and generate less noise. The magnetic core and the case are fixed by creating a space using adhesive, for example, and fixing the core in at least one place or more. Since there are few fixing points, vibrations of the magnetic core are less likely to be directly transmitted to the case. In order to have strength against external impact, it is preferable to fix the magnetic core at multiple locations.The adhesive used is one that can withstand the heat generated by the magnetic core during actual operation.
また、磁心をケースに固定後、ケースを密閉することに
より、音が空間部を介して外部に漏れるのを有効に防ぐ
ことができる。Further, by sealing the case after fixing the magnetic core to the case, it is possible to effectively prevent sound from leaking to the outside through the space.
本発明の磁心は、非晶質合金薄帯、ケイ素鋼板、フエラ
イ１〜等によるものに対して用いられるが、音は磁歪と
比例関係にある飽和磁束密度の高いものに対して顕著に
発生するため、特に１０Ｋ Ｇ以上の飽和磁束密度を有
し、磁歪の大ぎな非晶質合金薄帯に対して有効である。The magnetic core of the present invention is used for those made of amorphous alloy ribbons, silicon steel plates, Ferrai 1, etc., but the sound is noticeable when the saturation magnetic flux density is high, which is proportional to magnetostriction. Therefore, it is particularly effective for amorphous alloy ribbons that have a saturation magnetic flux density of 10 KG or more and have large magnetostriction.
（発明の実施例）
本発明の一実施例としてスイッチング電源用チョークコ
イル用コアの場合を説明する。(Embodiment of the Invention) As an embodiment of the present invention, a core for a choke coil for a switching power supply will be described.
鉄系非晶質合金薄帯（巾１０ｍ、厚さ２５μｍ）を巻回
し、外径２６履、内径１６＃、高さ１０Ｍの磁心を得た
。この磁心を約４００°Ｃで１時間の熱処理を施し真空
含浸法によりエポキシ樹脂を含浸後硬化処理を行った。A magnetic core having an outer diameter of 26 mm, an inner diameter of 16 #, and a height of 10 M was obtained by winding an iron-based amorphous alloy ribbon (width: 10 m, thickness: 25 μm). This magnetic core was heat-treated at about 400° C. for 1 hour, impregnated with epoxy resin by vacuum impregnation method, and then hardened.
次にこの磁心に巾０．６ｍのギャップ形成切断を施し、
ギャップ部に絶縁紙を挿入した。Next, this magnetic core was cut to form a gap with a width of 0.6 m,
Insulating paper was inserted into the gap.
この磁心を外径２７ｇ、内径１５．、高さ１１＃のケー
スに収納した。この際、磁心のケースへの固定は磁心の
底面を接着剤により４箇所で行った。次にこのケースを
接着剤により密閉してチョークコイル用コアとした。This magnetic core has an outer diameter of 27g and an inner diameter of 15. , housed in a case with a height of 11#. At this time, the magnetic core was fixed to the case at four locations on the bottom surface of the magnetic core using an adhesive. Next, this case was sealed with adhesive to form a core for a choke coil.
このチョークコイル用コアをスイッチング電源に組込み
実効した。この結果、負荷が１〜１０ＫＨ２の範囲にお
いては約４０ｄＢ以下であり実用上支障番ｊ、ないもの
であった。This choke coil core was incorporated into a switching power supply and put into practice. As a result, the load was approximately 40 dB or less in the range of 1 to 10 KH2, and there was no practical problem.
また比較として磁心とケース間にシリコンコンパウンド
を充填したものを用いた場合では、負荷が１〜１０ＫＩ
Ｉｚの範囲で７０〜８０ｄＢと本発明に比べ大きいもの
であった。For comparison, when using a silicon compound filled between the magnetic core and the case, the load was 1 to 10 KI.
It was 70 to 80 dB in the Iz range, which was larger than that of the present invention.
本発明は、ケイ素鋼板やフェライトを用いた磁心に対し
ても音の発生を抑える効果をもたらす。The present invention brings about the effect of suppressing the generation of sound even in magnetic cores using silicon steel plates or ferrite.
（発明の効果）
本発明により、従来の磁心に対し、音の発生の小さい磁
心を得ることができる。(Effects of the Invention) According to the present invention, a magnetic core that generates less sound than a conventional magnetic core can be obtained.
代理人弁理士 則 近 憲 佑 同 湯山幸夫Representative patent attorney Kensuke Chika Same Yukio Yuyama
Claims (3)
るケース間に空間部を介して固定してなる磁心。(1) A magnetic core formed by fixing a magnetic core made of a thin magnetic alloy through a space between cases that house the magnetic core.
記載の磁心。(2) The magnetic core according to claim 1, wherein the case is sealed.
する非晶質合金薄帯である特許請求の範囲第１項に記載
の磁心。(3) The magnetic core according to claim 1, wherein the magnetic alloy thin body is an amorphous alloy ribbon having a saturation magnetic flux density of 10 KG or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61067096A JP2557841B2 (en) | 1986-03-27 | 1986-03-27 | Magnetic core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61067096A JP2557841B2 (en) | 1986-03-27 | 1986-03-27 | Magnetic core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62224909A true JPS62224909A (en) | 1987-10-02 |
| JP2557841B2 JP2557841B2 (en) | 1996-11-27 |
Family
ID=13335007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61067096A Expired - Lifetime JP2557841B2 (en) | 1986-03-27 | 1986-03-27 | Magnetic core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2557841B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0677856A1 (en) | 1990-09-28 | 1995-10-18 | Mitsui Petrochemical Industries, Ltd. | Container for storing an annular magnetic core |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5731827U (en) * | 1980-07-30 | 1982-02-19 |
-
1986
- 1986-03-27 JP JP61067096A patent/JP2557841B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5731827U (en) * | 1980-07-30 | 1982-02-19 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0677856A1 (en) | 1990-09-28 | 1995-10-18 | Mitsui Petrochemical Industries, Ltd. | Container for storing an annular magnetic core |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2557841B2 (en) | 1996-11-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |