JP3303004B2 - Leakage magnetic flux type high frequency transformer - Google Patents
Leakage magnetic flux type high frequency transformerInfo
- Publication number
- JP3303004B2 JP3303004B2 JP2000071275A JP2000071275A JP3303004B2 JP 3303004 B2 JP3303004 B2 JP 3303004B2 JP 2000071275 A JP2000071275 A JP 2000071275A JP 2000071275 A JP2000071275 A JP 2000071275A JP 3303004 B2 JP3303004 B2 JP 3303004B2
- Authority
- JP
- Japan
- Prior art keywords
- core
- frequency transformer
- type
- magnetic flux
- shaped 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.)
- Expired - Fee Related
Links
Landscapes
- Coils Or Transformers For Communication (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【発明の属する利用分野】本発明は、漏洩磁束型の高周
波トランスに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leakage magnetic flux type high frequency transformer.
【0002】[0002]
【従来の技術】従来の漏洩磁束型高周波トランスは、例
えば、図4に示すように、断面形状がE型のフェライト
コア(以下、E型コアという)1と、同じく断面形状が
I型のフェライトコア(以下、I型コアという)2とを
用い、E型コア1の両側脚に1次巻線3と2次巻線4を
巻回するとともに、E型コア1とI型コア2との接合部
に絶縁性のスペーサ5を挟み込んで閉磁路を形成した構
造である。2. Description of the Related Art As shown in FIG. 4, for example, a conventional leakage magnetic flux type high frequency transformer includes a ferrite core 1 having an E-shaped cross section (hereinafter referred to as an E-shaped core) and a ferrite core having an I-shaped cross section. A primary winding 3 and a secondary winding 4 are wound around both legs of an E-type core 1 using a core (hereinafter referred to as an I-type core) 2, and the E-type core 1 and the I-type core 2 This is a structure in which a closed magnetic path is formed by sandwiching an insulating spacer 5 at the joint.
【0003】[0003]
【解決しようとする課題】この構造で、2次巻線4側の
漏洩インダクタンスの調整は、E型コア1の中脚とI型
コア2との間に形成されたギャップ6の幅を変化させる
ことによって行われる。そして、ギャップ6の幅を変化
させるためにはスペーサ5の厚さを変える必要がある。
しかしながら、スペーサ5の厚さを変えてしまうとそれ
に伴って1次巻線3と2次巻線4との結合係数が変化し
てしまう。また、上記の構成で、個々のトランスの漏洩
インダクタンスを一定の値に調整するためには厚さの異
なるスペーサを多数用意し、組み立て工程において所定
の漏洩インダクタンスに合致する厚さのスペーサを装着
しなければならない。従って、トランスの組み立て工程
における作業効率が低く、また、厚さの異なる多種のス
ペーサを準備しなければならないので不経済である。更
に、個々のトランスにおいてスペーサの厚さが異なるた
め、トランスの高さ寸法を一様にできないと言う品質上
の問題も発生する。In this structure, the adjustment of the leakage inductance on the secondary winding 4 side changes the width of the gap 6 formed between the middle leg of the E-type core 1 and the I-type core 2. This is done by: In order to change the width of the gap 6, it is necessary to change the thickness of the spacer 5.
However, if the thickness of the spacer 5 is changed, the coupling coefficient between the primary winding 3 and the secondary winding 4 changes accordingly. Also, in the above configuration, in order to adjust the leakage inductance of each transformer to a constant value, a number of spacers having different thicknesses are prepared, and a spacer having a thickness matching the predetermined leakage inductance is mounted in the assembly process. There must be. Therefore, the working efficiency in the transformer assembling process is low, and various types of spacers having different thicknesses must be prepared, which is uneconomical. Further, since the thickness of the spacer is different in each transformer, there is a quality problem that the height of the transformer cannot be made uniform.
【0004】[0004]
【課題を解決するための手段】本発明の第1は、断面形
状がE型のコアの側脚とI型のコアの接合部にスペーサ
を挟んで閉磁路を形成し、かつ、前記E型コアの中脚と
I型コアの対向辺との間にギャップを形成してなる漏洩
磁束型の高周波トランスにおいて、E型コアの幅よりや
や長めのI型コアの前記中脚と対向する面を切削または
突出させて傾斜面または曲面を形成し、前記傾斜面また
は曲面に沿ってギャップ幅が連続的に変化できるように
したことを特徴としている。このように構成することに
より、E型コアとI型コアの接合部に挟んだ絶縁性のス
ペーサの厚さを変えることなくギャップ幅を連続的に変
化できるようにしたものである。本発明の第2は、前記
切削部または突出部に形成した傾斜面の傾斜角または曲
面の曲率をI型コアの長手方向に対して左右非対称に形
成したことを特徴とするものである。このような構成と
することによって漏洩インダクタンスの調整を容易に行
えるようにしたものである。According to a first aspect of the present invention, a closed magnetic path is formed with a spacer interposed between a joint of a side leg of an E-shaped core and an I-shaped core, and In a high-frequency transformer of a leakage magnetic flux type in which a gap is formed between the center leg of the core and the opposite side of the I-type core, the surface of the I-type core slightly longer than the width of the E-type core is opposed to the surface of the I-type core. An inclined surface or a curved surface is formed by cutting or projecting, and a gap width can be continuously changed along the inclined surface or the curved surface. With such a configuration, the gap width can be continuously changed without changing the thickness of the insulating spacer interposed between the junctions of the E-type core and the I-type core. A second aspect of the present invention is characterized in that the inclination angle or the curvature of the curved surface formed on the cutting portion or the protruding portion is formed asymmetrically with respect to the longitudinal direction of the I-shaped core. With such a configuration, it is possible to easily adjust the leakage inductance.
【0005】[0005]
【実施の形態】図1は本発明高周波トランスの一実施形
態を説明するための図で(a)は断面側面図、(b)は
図1(a)に用いたコアの斜視図、図2は別の実施形態
を示す図で、(a)は断面側面図、(b)は図2(a)
に用いたコアの斜視図、図3は更に別の実施形態を示す
図で、(a)は断面側面図、(b)は同図(a)に用い
たコアの斜視図である。図1乃至図3において、同一部
分は同一の符号を付けて説明する。1はフェライトで形
成されたE型コアで、側脚1A,1A’と前記側脚の間
の中央部に位置する中脚1Bを備えている。2はE型コ
ア1の幅aより長くしたI型コアで、E型コア1の側脚
1A,1A’及び中脚1Bと対向する面の長手方向の中
央部付近には斜めに切り込んで傾斜面3を形成した切削
部4が形成してある。5はE型コアの側脚1A,1A’
とI型コア2との接合面に挟み込んだ絶縁性のスペー
サ、6はE型コア1の側脚1Aに装着された1次巻線、
7はE型コア1の側脚1A’に装着された2次巻線、8
はI型コア2の切削部4に形成した傾斜面3とE型コア
1の中脚1Bとの間に形成されたギャップである。FIG. 1 is a view for explaining an embodiment of the high-frequency transformer according to the present invention. FIG. 1 (a) is a sectional side view, FIG. 1 (b) is a perspective view of a core used in FIG. Is a view showing another embodiment, (a) is a cross-sectional side view, (b) is FIG. 2 (a)
FIG. 3 is a view showing still another embodiment, FIG. 3 (a) is a sectional side view, and FIG. 3 (b) is a perspective view of the core used in FIG. 1 to 3, the same portions will be described with the same reference numerals. Numeral 1 denotes an E-shaped core made of ferrite, which has a middle leg 1B located at a central portion between the side legs 1A, 1A 'and the side legs. Reference numeral 2 denotes an I-shaped core having a width longer than the width a of the E-shaped core 1. An oblique cut is made in the vicinity of the center in the longitudinal direction of a surface of the E-shaped core 1 facing the side legs 1A, 1A 'and the middle leg 1B. A cutting portion 4 having a surface 3 is formed. 5 is an E-shaped core side leg 1A, 1A '
An insulating spacer sandwiched between the joining surfaces of the E-shaped core 1 and the I-shaped core 2, a primary winding 6 attached to the side leg 1 </ b> A of the E-shaped core 1,
7 is a secondary winding attached to the side leg 1A 'of the E-shaped core 1, 8
Is a gap formed between the inclined surface 3 formed on the cutting portion 4 of the I-shaped core 2 and the middle leg 1B of the E-shaped core 1.
【0006】図2は本発明の別の実施形態を示すもの
で、I型コア2に設けた傾斜面3の傾斜角をI型コアの
長手方向に対して左右非対称に形成したものである。ま
た、図3は更に別の実施形態を示すもので、I型コア2
の前記切削部に相当する部分にE型コア1の中脚1B側
に突出する突出部4’を形成し、前記突出部とE型コア
1の中脚1Bとの間に形成されるギャップ8の相対幅を
前記突出部4’の曲面3’に沿って調整するようにした
ものである。FIG. 2 shows another embodiment of the present invention, in which the inclination angle of the inclined surface 3 provided on the I-shaped core 2 is formed to be asymmetrical with respect to the longitudinal direction of the I-shaped core. FIG. 3 shows still another embodiment, in which an I-shaped core 2
A projection 4 'projecting toward the middle leg 1B of the E-shaped core 1 at a portion corresponding to the cutting portion, and a gap 8 formed between the projection and the middle leg 1B of the E-shaped core 1. Is adjusted along the curved surface 3 'of the protrusion 4'.
【0007】[0007]
【作用】上記構成で、2次巻線7側の漏洩インダクタン
スLの調整は、E型コア1またはI型コア2の一方を右
または左に平行移動することによって行われる。例え
ば、図1の形態において、E型コア1を左に移動させる
と、I型コア2に形成した切削部4の傾斜面3とE型コ
アの中脚1Bとの間に形成されるギャップ8の相対的な
幅は狭くなるため、2次巻線側の漏洩インダクタンスL
は大きくなる。反対に、E型コア1を右に移動させると
ギャップ8の相対的な幅が大きくなるので、前記漏洩イ
ンダクタンスLは小さくなる。In the above configuration, the adjustment of the leakage inductance L on the secondary winding 7 side is performed by moving one of the E-type core 1 and the I-type core 2 to the right or left in parallel. For example, in the embodiment of FIG. 1, when the E-shaped core 1 is moved to the left, a gap 8 formed between the inclined surface 3 of the cutting portion 4 formed on the I-shaped core 2 and the middle leg 1B of the E-shaped core. , The relative inductance becomes smaller, so that the leakage inductance L
Becomes larger. Conversely, when the E-shaped core 1 is moved to the right, the relative width of the gap 8 increases, so that the leakage inductance L decreases.
【0008】[0008]
【発明の効果】このように、本発明トランスは、E型コ
ア1またはI型コア2の接合部に挟み込んだスペーサ5
の厚さを変えることなく、E型コア1またはI型コア2
の一方を平行に移動するだけでギャップ8の相対的な幅
を連続的に調整することができ、従って、1次巻線6と
2次巻線7との結合係数を一定にした状態で2次巻線6
側の漏洩インダクタンスLの調整を容易に行うことがで
きる。また、上述のように、スペーサ5の厚さを変えな
くて良いので個々のトランスの高さ寸法を同一にするこ
とができる。As described above, the transformer according to the present invention comprises the spacer 5 sandwiched between the junctions of the E-type core 1 or the I-type core 2.
E-type core 1 or I-type core 2 without changing the thickness of
Can be continuously adjusted only by moving one of them in parallel, so that the coupling coefficient between the primary winding 6 and the secondary winding 7 is kept constant. Next winding 6
The adjustment of the side leakage inductance L can be easily performed. Further, as described above, since the thickness of the spacer 5 does not need to be changed, the height dimensions of the individual transformers can be made the same.
【図1】は本発明高周波トランスの一実施形態を説明す
るための図、FIG. 1 is a diagram for explaining an embodiment of the high-frequency transformer of the present invention,
【図2】は別の実施形態を示す説明図、FIG. 2 is an explanatory view showing another embodiment,
【図3】は更に別の実施形態を示す説明図、FIG. 3 is an explanatory view showing still another embodiment,
【図4】は従来の漏洩磁束型高周波トランスの断面図、FIG. 4 is a cross-sectional view of a conventional leakage flux type high frequency transformer,
1……E型コア 1A,1A’……側脚 1B……中脚 2……I型コア 3……傾斜面 3’……曲面 4……切削部 4’……突出部 5……スペーサ 6……1次巻線 7……2次巻線 8……ギャップ DESCRIPTION OF SYMBOLS 1 ... E type core 1A, 1A '... Side leg 1B ... Middle leg 2 ... I type core 3 ... Inclined surface 3' ... Curved surface 4 ... Cutting part 4 '... Projection part 5 ... Spacer 6 Primary winding 7 Secondary winding 8 Gap
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平9−35928(JP,A) 特開 昭54−76967(JP,A) 特開 平7−297044(JP,A) 実開 昭51−84320(JP,U) (58)調査した分野(Int.Cl.7,DB名) H01F 27/24 - 27/26 H01F 38/08 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-35928 (JP, A) JP-A-54-76967 (JP, A) JP-A-7-297044 (JP, A) 84320 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) H01F 27/24-27/26 H01F 38/08
Claims (2)
との接合部にスペーサを挟んで閉磁路を形成し、かつ、
前記E型コアの中脚とI型コアの対向辺との間にギャッ
プを形成してなる漏洩磁束型の高周波トランスにおい
て、E型コアの幅よりやや長めのI型コアの前記中脚と
対向する面を切削または突出させて傾斜面または曲面を
形成し、前記傾斜面または曲面に沿ってギャップ幅が連
続的に変化できるようにしたことを特徴とする漏洩磁束
型高周波トランス。1. A closed magnetic path is formed at a joint between a side leg of an E-shaped core and an I-shaped core with a spacer interposed therebetween, and
In a high-frequency transformer of a leakage magnetic flux type having a gap formed between the middle leg of the E-type core and the opposite side of the I-type core, the high-frequency transformer faces the middle leg of the I-type core slightly longer than the width of the E-type core. A magnetic flux leakage type high frequency transformer characterized in that an inclined surface or a curved surface is formed by cutting or projecting a surface to be formed, and a gap width can be continuously changed along the inclined surface or the curved surface.
の傾斜角または曲面の曲率をI型コアの長手方向に対し
て左右非対称に形成したことを特徴とする請求項1に記
載の漏洩磁束型高周波トランス。2. The leakage according to claim 1, wherein the inclination angle of the inclined surface formed on the cutting portion or the projecting portion or the curvature of the curved surface is formed asymmetrically with respect to the longitudinal direction of the I-shaped core. Magnetic flux type high frequency transformer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000071275A JP3303004B2 (en) | 2000-02-09 | 2000-02-09 | Leakage magnetic flux type high frequency transformer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000071275A JP3303004B2 (en) | 2000-02-09 | 2000-02-09 | Leakage magnetic flux type high frequency transformer |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2001223122A JP2001223122A (en) | 2001-08-17 |
JP3303004B2 true JP3303004B2 (en) | 2002-07-15 |
Family
ID=18589886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000071275A Expired - Fee Related JP3303004B2 (en) | 2000-02-09 | 2000-02-09 | Leakage magnetic flux type high frequency transformer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3303004B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102543370A (en) * | 2010-12-22 | 2012-07-04 | 旭丽电子(广州)有限公司 | Iron core and inductor |
Families Citing this family (7)
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JP2007142088A (en) * | 2005-11-17 | 2007-06-07 | Tdk Corp | Transformer for leakage inductance variable adjustment inverter |
TW200814105A (en) * | 2007-10-25 | 2008-03-16 | Greatchip Technology Co Ltd | Manufacture adjustable leakage inductance transformer |
CN102725060B (en) * | 2009-12-02 | 2015-09-02 | 国立研究开发法人科学技术振兴机构 | Flow circuit device and comprise the sample processing device of flow circuit device |
GB2511844B (en) * | 2013-03-15 | 2015-12-23 | Eisergy Ltd | A magnetic component for a switching power supply and a method of manufacturing a magnetic component |
CN111213216B (en) * | 2017-10-25 | 2023-11-17 | 住友电气工业株式会社 | Coil assembly, circuit board and power supply device |
KR102529953B1 (en) * | 2021-05-24 | 2023-05-15 | 주식회사 화성테크노 | Coil component with separable type center core structure |
KR102529947B1 (en) * | 2021-05-24 | 2023-05-08 | 이강복 | Coil component with double center core structure |
-
2000
- 2000-02-09 JP JP2000071275A patent/JP3303004B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102543370A (en) * | 2010-12-22 | 2012-07-04 | 旭丽电子(广州)有限公司 | Iron core and inductor |
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Publication number | Publication date |
---|---|
JP2001223122A (en) | 2001-08-17 |
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