JPS60206122A - Choke coil - Google Patents
Choke coilInfo
- Publication number
- JPS60206122A JPS60206122A JP59062751A JP6275184A JPS60206122A JP S60206122 A JPS60206122 A JP S60206122A JP 59062751 A JP59062751 A JP 59062751A JP 6275184 A JP6275184 A JP 6275184A JP S60206122 A JPS60206122 A JP S60206122A
- Authority
- JP
- Japan
- Prior art keywords
- center leg
- core
- coil
- choke coil
- pot
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 37
- 239000000843 powder Substances 0.000 claims description 20
- 230000002093 peripheral effect Effects 0.000 claims description 18
- 239000000696 magnetic material Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 239000006247 magnetic powder Substances 0.000 claims description 3
- 229910000640 Fe alloy Inorganic materials 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 2
- 229930182556 Polyacetal Natural products 0.000 abstract description 2
- 229920006324 polyoxymethylene Polymers 0.000 abstract description 2
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 238000005056 compaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 229910017061 Fe Co Inorganic materials 0.000 description 1
- PMVSDNDAUGGCCE-TYYBGVCCSA-L Ferrous fumarate Chemical group [Fe+2].[O-]C(=O)\C=C\C([O-])=O PMVSDNDAUGGCCE-TYYBGVCCSA-L 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
- H01F17/045—Fixed inductances of the signal type with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/08—Cores, Yokes, or armatures made from powder
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F37/00—Fixed inductances not covered by group H01F17/00
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は圧粉磁性体からなるつぼ型鉄心を有するチョー
クコイルの改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement in a choke coil having a pot-shaped iron core made of powder magnetic material.
各種フィルター、リアクトル、螢光灯安定器等に用いら
れるチョークコイルは例えば第１図に示すようなつば型
鉄心を用いて形成されている。Choke coils used in various filters, reactors, fluorescent lamp ballasts, etc. are formed using, for example, a collar-shaped iron core as shown in FIG.
すなわち、つは型鉄心１は底面２から突出して形成され
た中央脚右部３と、この中央脚右部３を囲むように形成
された周辺部４とを有し、この周辺部４の一部に切欠部
５を設けたものである。That is, the half-shaped iron core 1 has a center leg right portion 3 formed to protrude from the bottom surface 2 and a peripheral portion 4 formed to surround this center leg right portion 3. A notch 5 is provided in the portion.
そして、チョークコイル６は例えば第２図に示すように
２個のっぽ型鉄心１，１を互いに切欠部５．５の位置が
一致するように対向させ、中央脚右部３．３の外周にコ
イル７を巻回して中央脚右部３．３と周辺部４，４との
間に形成される溝部におさめ、コイル７のリード線端子
８．８を切欠部５から引出した構造となっている。The choke coil 6 is constructed by, for example, as shown in FIG. 7 is wound and placed in the groove formed between the center leg right part 3.3 and the peripheral parts 4, 4, and the lead wire terminal 8.8 of the coil 7 is pulled out from the notch 5. .
ところで、従来、チョークコイルに用いられているつば
型鉄心１はその中央脚右部３の断面形状を円形としてい
る。これはっは型鉄心に最も多く使用されている焼結コ
アであるフェライトコアの場合断面形状が円形以外であ
ると、焼結時における収縮によシ寸法精度が悪くなるた
めである。また、通常周辺部４は中央回心部３と同心円
状に設けている。これは、圧粉の際の金型による成形の
容易さを考慮したものである。By the way, the flange-shaped iron core 1 conventionally used in a choke coil has a right central leg portion 3 having a circular cross-sectional shape. This is because, in the case of ferrite cores, which are the sintered cores most commonly used in molded iron cores, if the cross-sectional shape is other than circular, dimensional accuracy will deteriorate due to shrinkage during sintering. Further, the peripheral portion 4 is usually provided concentrically with the central pivot portion 3. This is done in consideration of the ease of molding using a mold during powder compaction.
しかし、このような中央回心部３の断面形状が円形のっ
ぽ型鉄心を用いて形成された第２図図示のような従来の
チョークコイルでは、コイル７が中央回心部３，３の周
シを自由に回転し得るだめ、コイル７を中央回心部３，
３に接着する等の方法で固定しないと、リード線端子８
゜８が周辺部４と接触して絶縁破壊を起こしたシ、断線
するという欠点がある。また、第２図図示のように２個
の鉄心１，１を用いた場合には、上下の鉄心１，１が中
央回心部３，３を中心として自由に回転し得るため、切
欠部５，５を一致させたうえで固定する必要がある等製
造上の問題がある。However, in the conventional choke coil as shown in FIG. The coil 7 is connected to the center rotation part 3,
If the lead wire terminal 8 is not fixed by gluing or other method to
8 comes into contact with the peripheral portion 4 and causes dielectric breakdown, resulting in disconnection. Furthermore, when two cores 1, 1 are used as shown in FIG. , 5 must match before being fixed, which poses manufacturing problems.
更に、上述したような形式のチョークコイルではつぼ型
鉄心１の中央回心部３と周辺部４との磁路断面積が等し
いことが鉄心内の磁束密度を均一化し、鉄心重量を増大
させないだめの重要な因子となる。このためには周辺部
４０半径方向の肉厚を中央回心部の直径に比べてかなシ
薄くする必要があるが、周辺部４の肉厚を薄くすると破
損し易いため、実際の鉄心では周辺部４に十分な肉厚を
とっている。しかし、このことは鉄心重量の増加とチョ
ークコイル外形寸法の増大を招いている。Furthermore, in the choke coil of the above-mentioned type, the fact that the magnetic path cross-sectional areas of the center rotation part 3 and the peripheral part 4 of the pot-shaped iron core 1 are equal makes the magnetic flux density in the iron core uniform, and it is necessary to avoid increasing the weight of the iron core. becomes an important factor. To achieve this, it is necessary to make the wall thickness of the peripheral part 40 in the radial direction slightly thinner than the diameter of the central pivot part. Part 4 has sufficient wall thickness. However, this results in an increase in the weight of the iron core and an increase in the outer dimensions of the choke coil.
そこで、第３図に示すつぼ型鉄心１１のように底面１２
から突出する中央回心部１３を囲むように周辺部１４．
１４を形成し、切欠部１５゜１５を例えば２箇所設けて
、周辺部１４．１４を十分厚くしたまま周辺部１４，１
４の断面積を減少させることが行なわれている。しかし
、切欠部１５．１５はリード線端子を引出す目的以外で
はデッドスペースとなるため、第３図のような鉄心を用
いた場合には、チョークコイルの外形寸法を小型化する
ことができなかった。Therefore, as shown in FIG. 3, the bottom surface 12 is
A peripheral portion 14. surrounds a central pivot portion 13 protruding from the central pivot portion 13.
14 and provide notches 15° 15 at two locations, for example, so that the peripheral portions 14, 14 are formed with sufficient thickness.
Efforts have been made to reduce the cross-sectional area of 4. However, the notch 15.15 becomes a dead space for purposes other than pulling out the lead wire terminal, so when using an iron core as shown in Figure 3, it was not possible to reduce the external dimensions of the choke coil. .
本発明は上記欠点を解消するためになされたものであシ
、コイル及び鉄心自体の自由な回転をなりシ、これらの
位置決めを容易にするとともにリード線端子の破損を防
止することができ、しかも重量が軽く、小型のチョーク
コイルを提供しようとするものである。The present invention has been made in order to eliminate the above-mentioned drawbacks, and allows the coil and the iron core to rotate freely, making it easy to position them, and preventing damage to the lead wire terminal. The purpose is to provide a choke coil that is light in weight and small in size.
本発明のチョークコイルは、底面から突出して形成され
た中央回心部と、この中央回心部を囲むように形成され
、一部に切欠部を設けた周辺部とを有し、圧粉磁性体か
らなる鉄心を少なくとも１個用い、前記中央回心部の外
周にコイルを巻回したチョークコイルにおいて、前記中
央回心部の断面形状を楕円とし、前記周辺部の切欠部を
、中央回心部の断面をなす楕円の長軸方向の少なくとも
一方の位置に設けたことを特徴とするものである。The choke coil of the present invention has a central rotation part formed to protrude from the bottom surface, and a peripheral part formed to surround this central rotation part and partially provided with a notch, and has powder magnetic properties. In a choke coil in which a coil is wound around the outer periphery of the central pivot part using at least one iron core made of a solid body, the cross-sectional shape of the central pivot part is an ellipse, and the notch in the peripheral part is It is characterized in that it is provided at at least one position in the long axis direction of an ellipse that forms a cross section of the section.
このように断面形状が楕円の中央回心部を有する鉄心を
用いれば、鉄心とコイルとを接着しなくとも両者が相対
的に回転することがなく、リード線端子の破損を防止す
ることができる。By using an iron core having a center pivot part with an elliptical cross-sectional shape in this way, the iron core and the coil will not rotate relative to each other even if they are not bonded, and damage to the lead wire terminal can be prevented. .
また、２個の鉄心を対向させたチョークコイルでも切欠
部の位置ずれが生じない。しかも、中央回心部の断面を
なす楕円の長軸方向に切欠きを設けるため、周辺部に十
分な厚みを確保した状態で切欠きのデッドスペースを減
少させ、重量の軽減と外形の小型化を図ることができる
。Further, even in a choke coil with two iron cores facing each other, the position of the notch does not shift. Moreover, since the notch is provided in the long axis direction of the ellipse that forms the cross section of the central pivot, the dead space of the notch is reduced while ensuring sufficient thickness around the periphery, reducing weight and reducing the external size. can be achieved.
以下、本発明の実施例を第４図及び第５図を参照して説
明する。Embodiments of the present invention will be described below with reference to FIGS. 4 and 5.
第４図は本発明に係るチョークコイルに用いられるつぼ
型鉄心２１の平面図である。FIG. 4 is a plan view of a pot-shaped iron core 21 used in the choke coil according to the present invention.
すなわち、このつぼ型鉄心２１は底面２２から断面形状
が楕円の中央回心部２３を突出させて形成し、この中央
回心部２３を囲むように周辺部２４．２４を形成し、周
辺部２４．２４の切欠部２５．２５を中央回心部２３の
断面をなす楕円の長軸方向２６の２箇所の位置に設けた
構造を有している。That is, this pot-shaped iron core 21 is formed by protruding a central pivot part 23 having an elliptical cross-sectional shape from the bottom surface 22, and a peripheral part 24.24 is formed to surround this central pivot part 23. It has a structure in which cutout portions 25 and 25 of .24 mm are provided at two positions in the long axis direction 26 of the ellipse that forms the cross section of the central pivot portion 23.
々お、中央脚右部２３と周辺部２４．２４との断面積は
等しく力るように設計されている。Furthermore, the cross-sectional areas of the right central leg portion 23 and the peripheral portion 24.24 are designed to apply equal force.
上記つぼ型鉄心２１は、平均粒径５３μｍの純鉄粉と半
硬化エポキシ樹脂とを体積比で９０：１０に混合して得
た混合体を金型に充填し、６００ ＭＰａの圧力で成形
した後、２００℃、１時間の熱処理を行なって硬化させ
だ圧粉磁性体からなるものである。The pot-shaped iron core 21 was made by filling a mold with a mixture obtained by mixing pure iron powder with an average particle size of 53 μm and semi-hardened epoxy resin at a volume ratio of 90:10, and molding at a pressure of 600 MPa. Afterwards, it is made of powder magnetic material by heat treatment at 200° C. for 1 hour to harden it.
このつは型鉄心２１の金型による成形性は、従来の円形
断面をもつ中央脚右部を有するつぼ型鉄心の成形性と比
較して何ら困離となることはなかった。The moldability of this half-shaped core 21 using a mold was not at all difficult compared to the moldability of a conventional pot-shaped core having a right central leg portion with a circular cross section.
チョークコイル２７は例えば第５図に示す如く、２個の
つは型鉄心２１．２１を用い、１個のっぽ型鉄心２１の
中央脚右部２３に、中央脚右部２３の外周に接するポリ
アセタール製の巻枠にホルマール絶縁銅線を巻いたコイ
ル２８を嵌着し、他のつば型鉄心２１を対向させて、そ
の中央脚右部２３を前記コイル２８０巻枠に挿着して形
成され、リード線端子２９．２９が切欠部２５から引出
される。For example, as shown in FIG. 5, the choke coil 27 uses two double-shaped iron cores 21 and 21, and a coil made of polyacetal that is in contact with the outer periphery of the right center leg 23 of one tail-shaped iron core 21. A coil 28 wound with formal insulated copper wire is fitted into the winding frame of the coil 280, and the other brim-shaped iron core 21 is opposed to the coil 280. The wire terminal 29.29 is pulled out from the cutout 25.
このチョークコイル２７の中央脚右部２３と周辺部２４
．２４との磁束密度は均一であった。The right central leg portion 23 and peripheral portion 24 of this choke coil 27
．． The magnetic flux density with No. 24 was uniform.
また、従来のチョークコイルと比較して、そのインダク
タンス値に何ら差異はなかった。Furthermore, there was no difference in inductance value compared to conventional choke coils.
しかして上記チョークコイルゼによれば、断面形状が楕
円の中央脚右部２３の外周にコイル２８がおさめられる
ため、接着しなくとも鉄心２１．２１とコイル２８とが
相対的に回転することがない。このため、リード線端子
２９゜２９が周辺部２４．２４に接触することがなく、
絶縁破壊や破損のおそれがない。また、同一形状の２個
の鉄心２１．２１を用いても中火脚心部２３．２３を中
心として自由に回転することがないので、２個の鉄心２
１．２１を特に位置合わせして固定しなくとも切欠部２
５・・・の位ｆ４ｊｌずれが生じない。According to the choke coil assembly, the coil 28 is housed around the outer periphery of the center leg right portion 23 having an elliptical cross-sectional shape, so that the iron core 21.21 and the coil 28 can rotate relative to each other without being bonded. do not have. Therefore, the lead wire terminal 29°29 does not come into contact with the peripheral portion 24.24,
There is no risk of insulation breakdown or damage. In addition, even if two iron cores 21.21 of the same shape are used, they will not rotate freely around the medium heat leg center 23.23, so the two iron cores 21.21
1. Notch 2 does not need to be aligned and fixed in particular.
No deviation of f4jl occurs in the order of 5....
更に、中央脚右部２３の断面をなす楕円の長軸方向２６
に切欠部２５，２５を設けておシ、楕円形をなすコイル
２８の長軸方向に切欠部２５・・・があるため、周辺部
２４を十分厚くしたまま切欠部２５のデッドスペースを
少なくすることができ、■量の軽減及び外形寸法の小型
化を図ることができる。Furthermore, the long axis direction 26 of the ellipse that forms the cross section of the right part 23 of the center leg
Since the notches 25, 25 are provided in the elliptical coil 28 in the long axis direction, the dead space of the notch 25 is reduced while the peripheral part 24 is made sufficiently thick. (2) It is possible to reduce the amount and the external dimensions.
なお、上記実施例では同一形状の鉄心を２個用いている
が、平断面形状が同一であれば、２個の鉄心の軸方向の
長さは等しくなくともよい。Note that although two iron cores of the same shape are used in the above embodiment, the lengths of the two iron cores in the axial direction do not have to be equal as long as the planar cross-sectional shapes are the same.
また、第６図に示すように第４図図示のっぽ型鉄心２１
を１個だけ用い、このつぼ型鉄心２１と円板状鉄心３０
とを組合わせた場合でも上記実施例と同様な効果を得る
ことかできる。In addition, as shown in FIG. 6, the top-shaped iron core 21 shown in FIG.
This pot-shaped core 21 and disc-shaped core 30 are used.
Even when these are combined, the same effects as in the above embodiment can be obtained.
更に、上記実施例では圧粉磁性体として純鉄粉と半硬化
エポキシ樹脂とを絶縁結着したものを用いたが、これに
限らす圧粉工程を経た材質であればいわゆるダストコア
でも何でもよい。Further, in the above embodiments, a material obtained by insulating and bonding pure iron powder and semi-hardened epoxy resin was used as the powder magnetic material, but any material, including a so-called dust core, may be used as long as it has undergone a powder compaction process.
例えば圧粉後焼結するフエライトオるいはフェライト粉
末と樹脂を圧粉したものでもよい。For example, it may be ferrite or ferrite powder that is sintered after compaction, or a product obtained by compacting ferrite powder and resin.
但し、焼結する場合には寸法精度が落ちるため、上記実
施例のように鉄又は鉄合金等の軟質磁性金属粉と絶縁及
び結着する樹脂からなる材質を用い、焼結しないように
することが、鉄心の寸法や切欠部の位置関係を正しく保
つためには望ましい。However, when sintering, the dimensional accuracy decreases, so as in the above example, a material made of resin that insulates and binds to soft magnetic metal powder such as iron or iron alloy should be used to avoid sintering. However, it is desirable to maintain the correct dimensions of the core and the positional relationship of the notches.
このような圧粉磁心としては、例えば鉄粉。An example of such a powder magnetic core is iron powder.
Ｆｅ−８ｔ合金粉、Ｆｅ−Ｎｉ合金粉、Ｆｅ−８ｔ−１
１合金粉、Ｆｅ−Ｃｏ合金粉、 Ｎｉ粉、 Ｆｅ−Ａｔ
合金粉等の軟質磁性体粉末と、ポリアミド脂肪、ポリエ
ステル樹脂、ポリカーがネート樹脂等の熱可塑性樹脂又
は半硬化状態の熱硬化性樹脂とを混合させたものを用い
るのがよい。例えば、平均粒径４４μｍのＦｅ−Ｎｉ合
金粉とポリアミド樹脂とを体積比にして８：２で混合し
て得た混合物を５００ＭＰａの圧力で成形するようにし
てもよい。この圧粉磁性体中の樹脂量は、体積比で１５
係以上であれば磁心の強度及び磁性体粉末相互の絶縁性
が良好となシ、本発明の効果を十分に発揮するチョーク
コイルが得られる。Fe-8t alloy powder, Fe-Ni alloy powder, Fe-8t-1
1 alloy powder, Fe-Co alloy powder, Ni powder, Fe-At
It is preferable to use a mixture of soft magnetic powder such as alloy powder and thermoplastic resin such as polyamide fat, polyester resin, polycarbonate resin, or semi-hardened thermosetting resin. For example, a mixture obtained by mixing Fe-Ni alloy powder with an average particle size of 44 μm and polyamide resin at a volume ratio of 8:2 may be molded at a pressure of 500 MPa. The amount of resin in this powder magnetic material is 15 by volume.
If it is more than 10%, the strength of the magnetic core and the mutual insulation between the magnetic powders are good, and a choke coil that fully exhibits the effects of the present invention can be obtained.
以上詳述した如く本発明によれば、コイル及び鉄心の位
置決めが容易で、リード線端子の破損を防止することが
でき、しかも軽量、小型のチョークコイルを捉供できる
ものである。As described in detail above, according to the present invention, it is possible to easily position the coil and the iron core, prevent damage to the lead wire terminal, and provide a lightweight and small choke coil.
第１図は従来のチョークコイルに用いられるつば型鉄心
の斜視図、第２図は従来のチョークコイルの断面図、第
３図は従来の他のチョークコイルに用いられるつぼ型鉄
心の平面図、第４図は本発明の実施例におけるチョーク
コイルに用いられるつぼ型鉄心の平面図、第５図は本発
明の実施例におけるチョークコイルの断面図、第６図は
本発明の他の実施例におけるチョークコイルの断面図で
ある。
２１・・・つぼ型鉄心、２２・・・底面、２３・・・中
央脚右部、２４・・・周辺部、２５・・・切欠部、２６
・・・楕円の長軸方向、２７・・・チョークコイル、２
８・・・コイル、２９・・・リード線端子、３０・・・
円板状鉄心。
第１図
第２図
第３図FIG. 1 is a perspective view of a collar-shaped core used in a conventional choke coil, FIG. 2 is a cross-sectional view of a conventional choke coil, and FIG. 3 is a plan view of a collar-shaped core used in another conventional choke coil. FIG. 4 is a plan view of a pot-shaped iron core used in a choke coil according to an embodiment of the present invention, FIG. 5 is a sectional view of a choke coil according to an embodiment of the present invention, and FIG. FIG. 3 is a cross-sectional view of a choke coil. 21... Pot type iron core, 22... Bottom surface, 23... Center leg right part, 24... Peripheral part, 25... Notch part, 26
... Long axis direction of the ellipse, 27 ... Choke coil, 2
8... Coil, 29... Lead wire terminal, 30...
Disc-shaped core. Figure 1 Figure 2 Figure 3
Claims (2)
中央脚右部を囲むように形成され、一部に切欠部を設け
た周辺部とを有し、圧粉磁性体からなる鉄心を少なくと
も１個用い、前記中央脚右部の外周にコイルを巻回した
チョークコイルにおいて、前記中央脚右部の断面形状を
楕円とし、前記周辺部の切欠部を、中央脚右部の断面を
なす楕円の長軸方向の少なくとも一方の位置に設けたこ
とを特徴とするチョークコイル。(1) An iron core made of powder magnetic material, which has a right central leg protruding from the bottom and a peripheral part surrounding the right central leg and partially provided with a notch. In a choke coil in which the coil is wound around the outer periphery of the right part of the center leg, the cross-sectional shape of the right part of the center leg is an ellipse, and the notch in the peripheral part is shaped like a cross-section of the right part of the center leg. A choke coil characterized in that it is provided at at least one position in the long axis direction of an ellipse.
結着したものである特許請求の範囲第１項記載のチョー
クコイル。(2) The choke coil according to claim 1, wherein the powder magnetic material is made by insulating and bonding iron or iron alloy magnetic powder with a resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59062751A JPS60206122A (en) | 1984-03-30 | 1984-03-30 | Choke coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59062751A JPS60206122A (en) | 1984-03-30 | 1984-03-30 | Choke coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60206122A true JPS60206122A (en) | 1985-10-17 |
Family
ID=13209416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59062751A Pending JPS60206122A (en) | 1984-03-30 | 1984-03-30 | Choke coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60206122A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01156512U (en) * | 1988-04-20 | 1989-10-27 | ||
| JPH0470725U (en) * | 1990-10-31 | 1992-06-23 | ||
| WO2002041338A1 (en) * | 2000-11-17 | 2002-05-23 | Epcos Ag | Ferrite core with a novel construction |
| US8120458B2 (en) * | 2005-04-28 | 2012-02-21 | Tdk Corporation | Ferrite core and transformer using the same |
| US9117580B2 (en) | 2009-02-27 | 2015-08-25 | Cyntec Co., Ltd. | Choke |
| US9208937B2 (en) | 2009-02-27 | 2015-12-08 | Cyntec Co., Ltd. | Choke having a core with a pillar having a non-circular and non-rectangular cross section |
| JP2018117046A (en) * | 2017-01-18 | 2018-07-26 | 新日鐵住金株式会社 | Transformer |
| USRE48472E1 (en) | 2009-02-27 | 2021-03-16 | Cyntec Co., Ltd. | Choke having a core with a pillar having a non-circular and non-rectangular cross section |
-
1984
- 1984-03-30 JP JP59062751A patent/JPS60206122A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01156512U (en) * | 1988-04-20 | 1989-10-27 | ||
| JPH0470725U (en) * | 1990-10-31 | 1992-06-23 | ||
| WO2002041338A1 (en) * | 2000-11-17 | 2002-05-23 | Epcos Ag | Ferrite core with a novel construction |
| US8120458B2 (en) * | 2005-04-28 | 2012-02-21 | Tdk Corporation | Ferrite core and transformer using the same |
| US9117580B2 (en) | 2009-02-27 | 2015-08-25 | Cyntec Co., Ltd. | Choke |
| US9208937B2 (en) | 2009-02-27 | 2015-12-08 | Cyntec Co., Ltd. | Choke having a core with a pillar having a non-circular and non-rectangular cross section |
| USRE48472E1 (en) | 2009-02-27 | 2021-03-16 | Cyntec Co., Ltd. | Choke having a core with a pillar having a non-circular and non-rectangular cross section |
| JP2018117046A (en) * | 2017-01-18 | 2018-07-26 | 新日鐵住金株式会社 | Transformer |
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