JPH04142014A - Coil device - Google Patents
Coil deviceInfo
- Publication number
- JPH04142014A JPH04142014A JP2264251A JP26425190A JPH04142014A JP H04142014 A JPH04142014 A JP H04142014A JP 2264251 A JP2264251 A JP 2264251A JP 26425190 A JP26425190 A JP 26425190A JP H04142014 A JPH04142014 A JP H04142014A
- Authority
- JP
- Japan
- Prior art keywords
- gap
- coil
- sectional area
- magnetic core
- lateral cross
- 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
- 230000004907 flux Effects 0.000 abstract description 14
- 230000002159 abnormal effect Effects 0.000 abstract description 9
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- 230000035699 permeability Effects 0.000 description 5
- 230000020169 heat generation Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［発明の目的コ
（産業上の利用分野）
本発明は、フライバックトランス スイッチング電源用
トランス、チョークコイル等に用いるコイル装置の改良
に関し特にギャップを有する磁心を用いたコイル装置の
改良に関する。[Detailed Description of the Invention] [Purpose of the Invention (Industrial Application Field) The present invention relates to improvements in coil devices used in flyback transformers, switching power supply transformers, choke coils, etc., and particularly relates to coils using magnetic cores with gaps. Concerning improvements to equipment.
（従来の技術）
従来、トランス、チョークコイル等では目的の電流を流
した際に磁心が飽和しないように磁路内にギャップを設
けている。例えばフェライト磁心の場合の透磁率μは５
０００程度であるがこれをトランス用磁心として使用す
る際にはギャップを設けて実効透磁率μを５０乃至３０
０として用いている。(Prior Art) Conventionally, in transformers, choke coils, etc., a gap is provided in the magnetic path to prevent the magnetic core from being saturated when a desired current is passed. For example, in the case of a ferrite magnetic core, the magnetic permeability μ is 5
000, but when using this as a magnetic core for a transformer, a gap is provided to reduce the effective magnetic permeability μ to 50 to 30.
It is used as 0.
このことは、もともと磁気抵抗の小さなフェライト磁心
の中に大きな磁気抵抗をもつギャップを入れなくてはな
らないことを意味しており、ギャップ周辺で大きな漏洩
磁束が発生する。This means that a gap with high magnetic resistance must be inserted into the ferrite core, which originally has low magnetic resistance, and a large leakage magnetic flux is generated around the gap.
この漏洩磁束は少なくとも下記の如く２つの悪影響を及
ぼすことが知られている。It is known that this leakage magnetic flux has at least two adverse effects as described below.
■ 磁気誘導に影響され易い周辺機器（部品）へのノイ
ズの発生。■ Noise generation to peripheral devices (components) that are easily affected by magnetic induction.
■ ギャップを包囲するようにコイルが巻回されている
場合漏洩磁束によりギャップ周辺のコイルが異常発熱す
る。■ If the coil is wound around the gap, the coil around the gap will abnormally heat up due to leakage magnetic flux.
という問題点があり、これらに関しては種々の改良案が
検討されている。There are these problems, and various improvement plans are being considered regarding these problems.
例えば上記■の問題点を解決するために、ギャップをコ
イルの内だけに設ける方法が知られているかこの方法た
けでは上記■の問題点か更に大きくなってしまう。For example, in order to solve the above problem (2), is there a known method of providing a gap only within the coil?If this method were used alone, the above problem (2) would be even worse.
上記■については、特開昭５５−７７１１５号、実開昭
５７−１３０４０２号公報に示されているように、コイ
ル中に位置するギャップを磁気的に直列かつ複数に分割
し漏洩磁束の集中を分散させようという例もあり、また
、上記■、■の問題点を解決するものとして実公昭５３
−５３８５０号、実公昭６０−７４４８号公報があり、
これらはギャップ充填材として比透磁率が空気よりも大
きいもの（１以上）を使用してギャップ部での磁気抵抗
を小さくし漏洩磁束を減少させようとしている。Regarding (2) above, as shown in Japanese Unexamined Patent Publication No. 55-77115 and Japanese Utility Model Application No. 57-130402, the gap located in the coil is magnetically divided into a plurality of parts in series to reduce the concentration of leakage magnetic flux. There are also examples of decentralization, and there is also a method to solve the above problems of ■ and ■.
-53850, Utility Model Publication No. 60-7448,
These attempt to reduce magnetic resistance in the gap by using a material with a relative magnetic permeability larger than that of air (1 or more) as a gap filler to reduce leakage magnetic flux.
（発明が解決しようとする課題）
上記のように比透磁率か空気より大きい材質（１以上）
をギャップとしてコイルの内側に設けた場合には、■、
■の問題点ともある程度改良できる可能性がある。(Problem to be solved by the invention) As mentioned above, the material has a relative magnetic permeability higher than that of air (1 or more)
If is provided inside the coil as a gap, ■,
There is a possibility that the problem in ① can be improved to some extent.
しかしながら、その場合においても、 ■、ギャップと磁心の境界部に漏洩磁束が集中する。However, even in that case, ■Leakage magnetic flux concentrates at the boundary between the gap and the magnetic core.
■、ギャップ材として適当な透磁率を持ちしかも磁心に
匹敵する程の高飽和磁束密度、低磁心損失特性を持つ磁
性体の入手か困難である。(2) It is difficult to obtain a magnetic material that has suitable permeability as a gap material, high saturation magnetic flux density comparable to that of a magnetic core, and low core loss characteristics.
等のために、ギャップと磁心の境界部上のコイルが異常
発熱する、ギャップ材の磁心損失によりギャップ部が異
常発熱する、ギャップを入れた磁心のＢ−Ｈ曲線か非線
形になりトランスとして使用した場合波形か歪むと言う
新たな問題を生してしまい、より効果的な改良案は得ら
れていないのが現状である。For example, the coil on the boundary between the gap and the magnetic core generates abnormal heat, the gap generates abnormal heat due to the core loss of the gap material, and the B-H curve of the magnetic core with the gap becomes non-linear and cannot be used as a transformer. In this case, a new problem arises in that the waveform is distorted, and at present no more effective improvement plan has been found.
上述したような従来の改良案では、いずれもエアギャッ
プではなく他のギャップ材のギャップを設ける、あるい
は複数に分割するなどの複雑な構造に成っているにもか
かわらず、ギャップ周辺で大きな漏洩磁束が発生するこ
とを十分に減少できないため、コストか増加する、信頼
性が低下するという問題点を生Ｃてしまう。In all of the conventional improvement proposals mentioned above, a large leakage magnetic flux occurs around the gap, despite the fact that they have a complex structure such as providing a gap of other gap material instead of an air gap, or dividing it into multiple parts. Since it is not possible to sufficiently reduce the occurrence of noise, this results in problems such as increased cost and decreased reliability.
本発明は上記問題点を解決し、周辺機器（部品）へのノ
イズの影響を少なくし、ギャップ周辺で生ずる漏洩磁束
を減少させ、もってギャップ周辺のコイルか異常発熱を
起すのを防止でき、またコストか安（、かつ信頼性が向
上するコイル装置を提供することを目的とする。The present invention solves the above problems, reduces the influence of noise on peripheral equipment (components), reduces leakage magnetic flux generated around the gap, and thereby prevents abnormal heating of the coil around the gap. The purpose is to provide a coil device that is low in cost and has improved reliability.
口発明の構成］
（課題を解決するための手段）
上記目的を達成するために本発明は、磁路を形成し、こ
の磁路中にギャップを有する磁心と、この磁心の前記ギ
ャップ領域を包含するように巻回されたコイルとから成
るコイル装置において、前記ギャップ領域には複数のギ
ャップが形成され、かつ、前記ギャップを形成する領域
の両側に位置する磁心部分の少なくとも一方を基端部の
横方向断面積よりも先端部の横方向断面積が小さくなる
形状としたことを特徴とするものである。[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention includes a magnetic core that forms a magnetic path and has a gap in the magnetic path, and includes the gap region of the magnetic core. In the coil device, a plurality of gaps are formed in the gap region, and at least one of the magnetic core portions located on both sides of the region forming the gaps is connected to a proximal end portion of the coil device. It is characterized by having a shape in which the lateral cross-sectional area of the tip portion is smaller than the lateral cross-sectional area.
（作 用）
各々内部に複数のギャップを有する１つ又は複数のコイ
ルを備えることにより、漏洩磁束の集中をコイル全長に
分散することができる。これによってコイルの異常発熱
を防止することができる。(Function) By providing one or more coils each having a plurality of gaps therein, concentration of leakage magnetic flux can be dispersed over the entire length of the coil. This can prevent abnormal heat generation of the coil.
（実施例） 以下図面を参照して本発明の詳細な説明する。(Example) The present invention will be described in detail below with reference to the drawings.
第１図（ａ）、 （ｂ）は本発明のコイル装置の第１
の実施例を示す概略図及び平面図で、コイル装置１はギ
ャップ５を介して相対向する第１の脚部２ａ及び第２の
脚部２ｂを有する断面０字型磁心２と、ギャップ５内に
配置されたコア部材３とコイル６とから構成されている
。コア部材３によってギャップ５は第１のギャップ５ａ
と第２のギャップ５ｂとに分割されている。これらギャ
ップ５ａ、５ｂを覆うようにコイル６が巻装されている
。また各対向している第１及び第２の脚部２ａ。FIGS. 1(a) and 1(b) show the first coil device of the present invention.
1 is a schematic diagram and a plan view showing an embodiment of the present invention, in which a coil device 1 includes a magnetic core 2 having a zero-shaped cross section and a first leg portion 2a and a second leg portion 2b facing each other across a gap 5; It is composed of a core member 3 and a coil 6 arranged in the core member 3 and the coil 6. The gap 5 is formed by the core member 3 into a first gap 5a.
and a second gap 5b. A coil 6 is wound so as to cover these gaps 5a and 5b. Also, each opposing first and second leg portion 2a.
２ｂの先端には平坦なコア部材４が設けられている。こ
れら断面０字型磁心２．コア部材４としては例えばフェ
ライトが用いられる。このような構造のコイル装置１に
おいて、各対向している第１及び第２の脚部２ａ、２ｂ
はいずれも、基端部の横方向断面積Ａよりも先端部の横
方向断面積Ｂが小さくなる形状に形成されている。A flat core member 4 is provided at the tip of 2b. These 0-shaped cross-section magnetic cores2. For example, ferrite is used as the core member 4. In the coil device 1 having such a structure, the first and second leg portions 2a and 2b facing each other
Both are formed in such a shape that the lateral cross-sectional area B of the distal end portion is smaller than the lateral cross-sectional area A of the proximal end portion.
第２図（ａ）、 （ｂ）は本発明の第２の実施例を示
す概略図及び平面図で、コイル装置１はギャップ５を介
して相対向している第１の脚部２ａ及び第２の脚部２ｂ
を有する断面Ｏ字型磁心８と、ギャップ５内に配置され
た第１のコア部材３ａ。2(a) and 2(b) are schematic diagrams and plan views showing a second embodiment of the present invention, in which the coil device 1 has a first leg portion 2a and a second leg portion facing each other across a gap 5. 2 leg 2b
a magnetic core 8 having an O-shaped cross section, and a first core member 3a disposed within the gap 5.
第２のコア部材３ｂ及び第３のコア部材３ｃと、コイル
６とから構成されている。第１乃至第３のコア部材３ａ
、３ｂ、３ｃによってギャップ５は第１のギャップ５ａ
、第２のギャップ５ｂ、第３のギャップ５ｃ及び第４の
ギャップ５ｄとに分割されている。これらギャップ５ａ
乃至５ｄを覆うようにコイル６が巻装されている。また
各対向している第１及び第２の脚部２ａ、２ｂの先端に
は平坦なコア部材４が設けられている。更に第１の実施
例と同様に、各対向している第１及び第２の脚部２ａ、
２ｂはいずれも、基端部の横方向断面積Ａよりも先端部
の横方向断面積Ｂが小さくなる形状に形成されている。It is composed of a second core member 3b, a third core member 3c, and a coil 6. First to third core members 3a
, 3b, 3c, the gap 5 becomes the first gap 5a
, a second gap 5b, a third gap 5c, and a fourth gap 5d. These gaps 5a
A coil 6 is wound so as to cover 5d to 5d. Further, a flat core member 4 is provided at the tip of each of the opposing first and second leg portions 2a and 2b. Furthermore, similarly to the first embodiment, each of the opposing first and second leg portions 2a,
2b are each formed in such a shape that the lateral cross-sectional area B of the distal end portion is smaller than the lateral cross-sectional area A of the proximal end portion.
第３図（ａ）、 （ｂ）は本発明の第３の実施例を示
す概略図及び平面図で、コイル装置１は第１及び第２の
脚部９ａ、９ｂを有する第１の断面Ｕ字型磁心９と第１
及び第２の脚部１０ａ、１０ｂを有する第２の断面Ｕ字
型磁心１０と、各第１の脚部９ａ、１０ａ間のギャップ
５内及び各第２の脚部９ｂ、１０ｂ間のギャップ５内に
配置されたコア部材３と、第１のコイル６及び第２のコ
イル７とから構成されている。コア部材３によってギャ
ップ５は第１及び第２のギャップ５ａ、５ｂに分割され
ている。第１及び第２の断面Ｕ字型磁心９．１０は各々
の第１の脚部９ａと１０ａ及び第２の脚部９ｂと１０ｂ
とがそれぞれギャップ５ａ５ｂを介して対向するように
配置され、これらギャップ５ａ、５ｂを内部に覆うよう
に第１及び第２のコイル６．７が巻装されている。また
各脚部の先端には平坦なコア部材４が設けられている。3(a) and 3(b) are schematic diagrams and plan views showing a third embodiment of the present invention, in which the coil device 1 has a first cross section U having first and second legs 9a and 9b. character-shaped magnetic core 9 and the first
and a second cross-sectional U-shaped magnetic core 10 having second legs 10a, 10b, and a gap 5 between each first leg 9a, 10a and between each second leg 9b, 10b. It is comprised of a core member 3 disposed inside, a first coil 6 and a second coil 7. The core member 3 divides the gap 5 into first and second gaps 5a and 5b. The first and second U-shaped cross-section magnetic cores 9.10 have respective first legs 9a and 10a and second legs 9b and 10b.
are arranged to face each other with a gap 5a5b in between, and the first and second coils 6.7 are wound so as to cover the gaps 5a and 5b inside. Further, a flat core member 4 is provided at the tip of each leg.
更に第１の脚部９ａ、１０ａ及び第２の脚部９ｂ１０ｂ
はいずれも、基端部の横方向断面積Ａよりも先端部の横
方向断面積Ｂが小さくなる形状に形成されている。Further, first legs 9a, 10a and second legs 9b10b
Both are formed in such a shape that the lateral cross-sectional area B of the distal end portion is smaller than the lateral cross-sectional area A of the proximal end portion.
第４図（ａ）、 （ｂ）は本発明の第４の実施例を示
す概略図及び平面図で、コイル装置１は第１及び第２の
脚部１１ａ、ｌｌｂを有する第１の断面Ｕ字型磁心１１
と、第１及び第２の脚部１２ａ１２ｂを有する第２の断
面Ｕ字型磁心１２と各第１の脚部１１ａ、１２ａ間及び
各第２の脚部１１ｂ、１２ｂ間のギャップ５内に配置さ
れた第１第２及び第３のコア部材３ａ、３ｂ、３ｃと、
第１及び第２のコイル６．７とから構成されている。FIGS. 4(a) and 4(b) are schematic diagrams and plan views showing a fourth embodiment of the present invention, in which the coil device 1 has a first cross section U having first and second leg portions 11a and llb. letter-shaped magnetic core 11
and a second cross-sectional U-shaped magnetic core 12 having first and second legs 12a, 12b and disposed within the gap 5 between each first leg 11a, 12a and between each second leg 11b, 12b. first, second and third core members 3a, 3b, 3c,
It is composed of a first coil 6.7 and a second coil 6.7.
第１乃至第３のコア部材３ａ、３ｂ、３ｃによってギャ
ップ５は第１乃至第４のギャップ５ａ乃至５ｄに分割さ
れている。これらギャップ５ａ乃至５ｄを覆うように第
１及び第２のコイル６．７が巻装されている。また各脚
部の先端には平坦なコア部材４が設けられている。更に
第１の脚部１１ａ、１２ａ及び第２の脚部１１ｂ、１２
ｂはいずれも、基端部の横方向断面積Ａよりも先端部の
横方向断面積Ｂか小さくなる形状に形成されている。The gap 5 is divided into first to fourth gaps 5a to 5d by the first to third core members 3a, 3b, and 3c. First and second coils 6.7 are wound so as to cover these gaps 5a to 5d. Further, a flat core member 4 is provided at the tip of each leg. Further, first legs 11a, 12a and second legs 11b, 12
Both b are formed in such a shape that the lateral cross-sectional area B of the distal end is smaller than the lateral cross-sectional area A of the proximal end.
このように第１乃至第４の各実施例によれば各々内部に
複数のギャップを有する１つ又は複数のコイルを備える
ようにし、ギャップを介して相対向する一対の磁心の少
なくとも一方を基端部の横方向断面積よりも先端部の横
方向断面積か小さくなる形状に形成したので、漏洩磁束
の集中をコイル全長に分散することかできる。これによ
ってコイルの異常発熱を防止することができる。According to each of the first to fourth embodiments, each coil is provided with one or more coils each having a plurality of gaps therein, and at least one of a pair of magnetic cores facing each other via the gap is connected to the proximal end. Since the shape is formed such that the lateral cross-sectional area of the tip portion is smaller than the lateral cross-sectional area of the tip portion, concentration of leakage magnetic flux can be dispersed over the entire length of the coil. This can prevent abnormal heat generation of the coil.
第５図は比較のために従来構造のコイル装置を示すもの
で、コイル装置１は脚部１９ａを有する第１の断面Ｕ字
型磁心１９と、脚部２０ａを有する第２の断面Ｕ字型磁
心２０と、対向する脚部１９ａと２０ａ間に形成された
ギャップ５を内部こ覆うようにコイル２１が巻装されて
いる。相対向する脚部１９ａと２０ａは全長にわたって
横方向断面積が等しくなる形状に形成されている。FIG. 5 shows a conventional coil device for comparison. The coil device 1 includes a first U-shaped magnetic core 19 having a leg portion 19a, and a second U-shaped magnetic core 19 having a leg portion 20a. A coil 21 is wound so as to cover the inside of the gap 5 formed between the magnetic core 20 and the opposing legs 19a and 20a. The opposing legs 19a and 20a are formed to have equal transverse cross-sectional areas over their entire length.
次表は各実施例によって得られたコイル装置の各部の温
度測定結果を従来コイル装置と比較して示すものである
。なお各部の位置は第６図に示すような試験装置３０を
用いて行った。（試験条件周波数１００ＫＨｚ、０．８
Ａ正弦波、環境温度４０℃）
表 （℃）
よれば、コイル中央部Ｘ、コイル端部Ｙ、コア部Ｚ９周
囲Ｗのいずれにおいても従来例より温度の低下が認めら
れる。従ってコイルの異常発熱を防止することができる
。また組立も簡単に行うことができるので、コストダウ
ンを図ることができる。The following table shows the temperature measurement results of each part of the coil device obtained in each example in comparison with a conventional coil device. Note that the positions of each part were determined using a testing apparatus 30 as shown in FIG. (Test conditions frequency 100KHz, 0.8
A sine wave, environmental temperature 40°C) According to the table (°C), a decrease in temperature is observed in all of the coil center X, coil end Y, and core Z9 periphery W compared to the conventional example. Therefore, abnormal heat generation of the coil can be prevented. Furthermore, since assembly is easy, costs can be reduced.
なお各実施例において、ギャップを介して対向する一対
の磁心の少なくとも一方における、基端部の横方向断面
積よりも先端部の横方向断面積が小さくなる形状として
は湾曲状に形成した例で示したか、これらの形状に限ら
ず第７図（ａ）乃至（Ｃ）に示したような形状をとるこ
とができる。In each example, the shape in which the lateral cross-sectional area of the distal end of at least one of a pair of magnetic cores facing each other with a gap is smaller than the lateral cross-sectional area of the proximal end is a curved shape. However, it is not limited to these shapes, but can take shapes as shown in FIGS. 7(a) to (C).
すなわち第７図（ａ）、 （ｂ）、 （ｃ）は相対
向する一対の脚部２２．２３の周囲に順次傾斜面が緩や
かになるようにテーパ部２２ａと２３ａ。That is, FIGS. 7(a), 7(b), and 7(c) show tapered portions 22a and 23a such that the slopes become gradually gentler around the pair of opposing leg portions 22 and 23.
２２ｂと２３ｂ、２２ｃと２３ｃとを形成することによ
り、基端部の横方向断面積Ａよりも先端部の横方向断面
積Ｂが小さくなるような形状に形成した例を示すもので
ある。更に第８図（ａ）乃至（ｈ）のような形状をとる
ことができる。すなわち第８図（ａ）は一対の脚部２５
．２６の相対向端部に球面２５ａ、２６ａを形成した形
状、第８図（’ｂ）は同様に曲面２５ｂ、２６ｂを形成
して断面積を対向面に向かって減少させるようにした形
状、第８図＜ｃ＞は湾曲２５ｃ、２６ｃを形成した形状
、第８ＦＩ！Ｊ（ｄ）は尖頭面２５ｄ、２６ｄを形成し
た形状、第８図（ｅ）は切欠面２５ｅ。22b and 23b and 22c and 23c are formed in a shape such that the lateral cross-sectional area B of the distal end is smaller than the lateral cross-sectional area A of the proximal end. Further, shapes as shown in FIGS. 8(a) to (h) can be taken. In other words, FIG. 8(a) shows the pair of legs 25.
．． FIG. 8('b) shows a shape in which spherical surfaces 25a and 26a are formed at opposing ends of the cylindrical surface 26, and a shape in which curved surfaces 25b and 26b are similarly formed so that the cross-sectional area decreases toward the opposing surfaces. Figure 8 <c> is the shape with curves 25c and 26c, 8th FI! J(d) shows a shape in which pointed surfaces 25d and 26d are formed, and FIG. 8(e) shows a notched surface 25e.
２６ｅを形成した形状、第８図（ｆ）は段面２５ｆ、２
６ｆを形成した形状、第８図（ｇ）は円錐台の上面に四
角面２５ｇ、２６ｇを形成した形状、第８図（ｈ）は四
角錐面２５ｈ、２６ｈを形成した形状を示すものである
。The shape in which 26e is formed, FIG. 8(f) is the stepped surface 25f, 2
8(g) shows a shape in which square surfaces 25g and 26g are formed on the upper surface of a truncated cone, and FIG. 8(h) shows a shape in which square pyramidal surfaces 25h and 26h are formed on the upper surface of a truncated cone. .
なお実施例ではコイルを３個まで設けた例で示したが、
４個以上設けることも任意である。In the example, up to three coils were provided, but
It is also optional to provide four or more.
［発明の効果］
以上述べたように本発明によれば、周辺機器へのノイズ
の影響を少なくし、ギャップ周辺で生ずる漏洩磁束を減
少させ、もってギャップ周辺のコイルの異常発熱を防止
し、またコストが安くかつ信頼性か向上するコイル装置
を提供することができる。[Effects of the Invention] As described above, according to the present invention, the influence of noise on peripheral equipment is reduced, the leakage magnetic flux generated around the gap is reduced, thereby preventing abnormal heat generation of the coil around the gap, and A coil device with low cost and improved reliability can be provided.
第１図（ａ）、（ｂ）乃至第４図（ａ）５（ｂ）は各々
本発明のコイル装置の第１の実施例、第２の実施例、第
３の実施例、及び第４の実施例を示す概略図及び平面図
、第５図は従来例を示す概略図、第６図はコイル装置の
各部の温度測定方法の説明図、第７図（ａ）乃至（Ｃ）
は本発明のコイル装置に用いられる磁心の形状の変形例
を示す概略図、第８図（ａ）乃至（ｈ）は本発明のコイ
ル装置に用いられる磁心形状の他の変形例を示す概略図
である。
１・・・コイル装置、２．８・・・磁心、５．５ａ乃至
５ｄ・・・ギャップ、
９．１１・・・第１の磁心、
１０．１２・・・第２の磁心、６．７・・・コイル、２
ａ、２ｂ、９ａ、９ｂ、１０ａ、１０ｂ。
１１ａ、ｌｌｂ、１２ａ、１２ｂ−・・脚部、３０・・
・試験装置、
Ａ・・・脚部の基端部の横方向断面積、Ｂ・・・脚部の
先端部の横方向断面積。
わ
ば）
第
図
第
図
第
図
第
図1(a), (b) to FIG. 4(a) and 5(b) respectively show a first embodiment, a second embodiment, a third embodiment, and a fourth embodiment of the coil device of the present invention. 5 is a schematic diagram showing a conventional example, FIG. 6 is an explanatory diagram of a method for measuring the temperature of each part of the coil device, and FIG. 7 (a) to (C)
8 is a schematic diagram showing a modified example of the shape of the magnetic core used in the coil device of the present invention, and FIGS. 8(a) to (h) are schematic diagrams showing other modified examples of the shape of the magnetic core used in the coil device of the present invention. It is. DESCRIPTION OF SYMBOLS 1... Coil device, 2.8... Magnetic core, 5.5a to 5d... Gap, 9.11... First magnetic core, 10.12... Second magnetic core, 6.7 ...Coil, 2
a, 2b, 9a, 9b, 10a, 10b. 11a, llb, 12a, 12b--legs, 30...
-Test device, A...Transverse cross-sectional area of the base end of the leg, B...Transverse cross-sectional area of the tip of the leg. Waba) Figure Figure Figure Figure Figure
Claims (2)
心と、この磁心の前記ギャップ領域を包含するように巻
回されたコイルとから成るコイル装置において、前記ギ
ャップ領域には複数のギャップが形成され、かつ、前記
ギャップを形成する領域の両端に位置する磁心部分の少
なくとも一方を基端部の横方向断面積よりも先端部の横
方向断面積が小さくなる形状をとしたことを特徴とする
コイル装置。(1) A coil device comprising a magnetic core that forms a magnetic path and has a gap in the magnetic path, and a coil wound so as to cover the gap area of the magnetic core, in which a plurality of coils are wound in the gap area. A gap is formed, and at least one of the magnetic core portions located at both ends of the region forming the gap is shaped such that the lateral cross-sectional area of the distal end is smaller than the lateral cross-sectional area of the proximal end. Characteristic coil device.
置。(2) The coil device according to claim 1, comprising a plurality of said coils.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2264251A JP2714997B2 (en) | 1990-10-02 | 1990-10-02 | Coil device |
| EP91102490A EP0444521B1 (en) | 1990-02-27 | 1991-02-20 | Coil device |
| DE69120986T DE69120986T2 (en) | 1990-02-27 | 1991-02-20 | Coil arrangement |
| US07/658,901 US5315279A (en) | 1990-02-27 | 1991-02-22 | Coil device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2264251A JP2714997B2 (en) | 1990-10-02 | 1990-10-02 | Coil device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04142014A true JPH04142014A (en) | 1992-05-15 |
| JP2714997B2 JP2714997B2 (en) | 1998-02-16 |
Family
ID=17400582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2264251A Expired - Lifetime JP2714997B2 (en) | 1990-02-27 | 1990-10-02 | Coil device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2714997B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006245050A (en) * | 2005-02-28 | 2006-09-14 | Tdk Corp | Coil component and reactor |
| JP2010199222A (en) * | 2009-02-24 | 2010-09-09 | Seiko Instruments Inc | Method of manufacturing anisotropic bond magnet, magnetic circuit, and anisotropic bond magnet |
| JP2015220256A (en) * | 2014-05-14 | 2015-12-07 | 株式会社デンソー | Reactor |
| JP2016096313A (en) * | 2014-11-17 | 2016-05-26 | 株式会社豊田自動織機 | Induction apparatus |
| JP2017079221A (en) * | 2015-10-19 | 2017-04-27 | スミダコーポレーション株式会社 | Coil component |
| CN115762959A (en) * | 2022-11-10 | 2023-03-07 | 超聚变数字技术有限公司 | Inductor, power factor correction circuit, switching power supply and computing equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5577115A (en) * | 1978-11-22 | 1980-06-10 | Philips Nv | Transformer having air gap |
| JPS57946U (en) * | 1980-05-30 | 1982-01-06 | ||
| JPS57188320U (en) * | 1981-05-25 | 1982-11-30 | ||
| JPS6291418U (en) * | 1985-11-29 | 1987-06-11 |
-
1990
- 1990-10-02 JP JP2264251A patent/JP2714997B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5577115A (en) * | 1978-11-22 | 1980-06-10 | Philips Nv | Transformer having air gap |
| JPS57946U (en) * | 1980-05-30 | 1982-01-06 | ||
| JPS57188320U (en) * | 1981-05-25 | 1982-11-30 | ||
| JPS6291418U (en) * | 1985-11-29 | 1987-06-11 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006245050A (en) * | 2005-02-28 | 2006-09-14 | Tdk Corp | Coil component and reactor |
| JP2010199222A (en) * | 2009-02-24 | 2010-09-09 | Seiko Instruments Inc | Method of manufacturing anisotropic bond magnet, magnetic circuit, and anisotropic bond magnet |
| JP2015220256A (en) * | 2014-05-14 | 2015-12-07 | 株式会社デンソー | Reactor |
| JP2016096313A (en) * | 2014-11-17 | 2016-05-26 | 株式会社豊田自動織機 | Induction apparatus |
| JP2017079221A (en) * | 2015-10-19 | 2017-04-27 | スミダコーポレーション株式会社 | Coil component |
| CN115762959A (en) * | 2022-11-10 | 2023-03-07 | 超聚变数字技术有限公司 | Inductor, power factor correction circuit, switching power supply and computing equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2714997B2 (en) | 1998-02-16 |
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