JPS61278115A - Transformer - Google Patents
TransformerInfo
- Publication number
- JPS61278115A JPS61278115A JP60119460A JP11946085A JPS61278115A JP S61278115 A JPS61278115 A JP S61278115A JP 60119460 A JP60119460 A JP 60119460A JP 11946085 A JP11946085 A JP 11946085A JP S61278115 A JPS61278115 A JP S61278115A
- Authority
- JP
- Japan
- Prior art keywords
- core
- notch
- toroidal core
- circumferential side
- section
- 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
Landscapes
- Coils Or Transformers For Communication (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、フライバック・コンバータ等のスイッチング
・レギュレータ（以下、エネルギ蓄積形スイッチング・
レギュレータと略称する）において負荷に供給するエネ
ルギを蓄積するのに用いられるトランスに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to switching regulators (hereinafter referred to as energy storage type switching regulators) such as flyback converters.
It relates to a transformer used to store energy to be supplied to a load in a regulator (abbreviated as a regulator).
（従来の技術）
従来、エネルギ蓄積形スイッチング・レギュレータでは
、第２図に側面図で示すようにＥＩ形ココア４ギヤラグ
３を設けたトランスを使用して、エネルギを蓄積してい
た。図において、２は巻線であり、破線は漏洩磁束を示
している。一般的に、スイッチング・レギュレータには
小型化の要望が強く、従ってスイッチング・レギュレー
タ内部の部品実装は過密化せざるを得ない。(Prior Art) Conventionally, energy storage type switching regulators store energy using a transformer provided with an EI type cocoa four gear lug 3, as shown in a side view in FIG. In the figure, 2 is a winding, and the broken line indicates leakage magnetic flux. In general, there is a strong demand for switching regulators to be smaller, and therefore the components inside the switching regulator must be mounted overcrowded.
（発明が解決しようとする問題点）
従来のトランスを用いたエネルギ蓄積形スイッチング・
レギュレータでは、前述の如くに部品を過密に実装した
場合、第２図に破線で示す漏洩磁束が部品に直接に、又
、金属配線板では金属配線にそれぞれ影響を及ぼし、エ
ネルギ蓄積形スイッチング・レギュレータ自体が誤動作
をするという問題点があった。この誤動作をしないよう
に漏洩磁束を軽減するために、電磁遣へい用の金属によ
る覆いを設けると、スイッチング・レギュレータが高価
になるという問題点が生じる。(Problem to be solved by the invention) Energy storage type switching using a conventional transformer
In a regulator, when components are mounted densely as described above, the leakage magnetic flux shown by the broken line in Figure 2 will directly affect the components, and in the case of a metal wiring board, it will affect the metal wiring, causing energy storage type switching regulators. There was a problem that the device itself malfunctioned. If a metal cover for electromagnetic transmission is provided in order to reduce leakage magnetic flux to prevent this malfunction, a problem arises in that the switching regulator becomes expensive.
そこで、本発明の目的は、エネルギ蓄積形スイッチング
・レギュレータにおいて必要な程度にエネルギが蓄積で
き、しかも周辺回路に影響を及ぼす漏洩磁束が少ないト
ランスの提供にある。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a transformer that can store energy to the necessary extent in an energy storage type switching regulator and that has less leakage magnetic flux that affects peripheral circuits.
（問題点を解決するための手段）
前述の問題点を解決するために本発明が提供するトラン
スは、磁心がトロイダルコアからなり、このトロイダル
コアには内周側から外周側に向って切欠きが設けてある
ことを特徴とする。(Means for Solving the Problems) In order to solve the above-mentioned problems, the transformer provided by the present invention has a magnetic core composed of a toroidal core, and the toroidal core has a notch extending from the inner circumference side to the outer circumference side. It is characterized by having the following.
（実施例）
第１図は、本発明の一実施例を示す平面図であシ、１は
トロイダルコア、１−１はギャップのあるコア部、１−
２はギャップのないコア部、５は切欠き、６，７は巻線
、破線８は漏洩磁束をそれぞれ示す。この実施例では、
磁心がトロイダルコア１からなり、このトロイダルコア
ｌには内周側から外周側へ向かう切欠き５が設けである
。そこで、このトロイダルコア１は、切欠き５がある円
環状の磁路をなす内側部分のコア部１−１と、切欠きの
ない円環状の磁路をなす外側部分のコア部１−２とから
なる並列磁気回路と見ることができる。そこで、コア部
１−１では切欠き５がギャップとなるから、漏洩磁束８
が出る。そして、切欠き５の外側にはコア部１−２があ
るから、トロイダルコア１の外側には漏洩磁束はほとん
どない。(Embodiment) FIG. 1 is a plan view showing an embodiment of the present invention, in which 1 is a toroidal core, 1-1 is a core portion with a gap, and 1-
Reference numeral 2 indicates a core portion without a gap, 5 indicates a notch, 6 and 7 indicate windings, and broken line 8 indicates leakage magnetic flux. In this example,
The magnetic core consists of a toroidal core 1, and this toroidal core 1 is provided with a notch 5 extending from the inner circumferential side to the outer circumferential side. Therefore, this toroidal core 1 has an inner core part 1-1 that forms a circular magnetic path with a notch 5, and an outer core part 1-2 that forms a circular magnetic path without a notch. It can be seen as a parallel magnetic circuit consisting of Therefore, since the notch 5 becomes a gap in the core part 1-1, the leakage magnetic flux 8
coming out. Since the core portion 1 - 2 is located outside the notch 5 , there is almost no leakage magnetic flux outside the toroidal core 1 .
漏洩磁束８の大きさは切欠き５の深さや数により任意に
設定できる。そこで、本実施例をエネルギ蓄積形スイッ
チング・レギュレータに用いれば、必要な磁気エネルギ
が蓄積でき、しかも囲シの他の回路に誤動作を起こさせ
るような漏洩磁束を発生しないから、エネルギ蓄積形ス
イッチング・レギュレータが小形で安価に製造できる。The magnitude of the leakage magnetic flux 8 can be arbitrarily set depending on the depth and number of the notches 5. Therefore, if this embodiment is used in an energy storage type switching regulator, the necessary magnetic energy can be stored, and leakage magnetic flux that may cause malfunctions in other circuits in the enclosure is not generated. The regulator is small and can be manufactured at low cost.
（発明の効果）
以上説明したように１本発明によれば、エネルギ蓄積形
スイッチング・レギュレータにおいて必要な程度にエネ
ルギが蓄積でき、しかも周辺の回路に影響を及ぼす漏洩
磁束が少ないトランスが提供できる。(Effects of the Invention) As explained above, according to the present invention, it is possible to provide a transformer that can store energy to the necessary extent in an energy storage type switching regulator and has less leakage magnetic flux that affects peripheral circuits.
第１図は本発明の一実施例を示す平面図、第２図は従来
のトランスを示す正面図である。
ｌ・・・トロイダルコア、２・・・巻線、３・・・ギャ
ップ、４・・・ＩＩ形ココア５・・・切欠き、６．７・
・・巻線。
代理人 弁理士 本 庄 伸 弁
箱１図
第２図FIG. 1 is a plan view showing an embodiment of the present invention, and FIG. 2 is a front view showing a conventional transformer. l...Toroidal core, 2...Winding, 3...Gap, 4...II type cocoa 5...Notch, 6.7.
...Winding wire. Agent Patent Attorney Nobu Honjo Bento Box 1 Figure 2
Claims (1)
には内周側から外周側に向つて切欠きが設けてあること
を特徴とするトランス。A transformer characterized in that the magnetic core consists of a toroidal core, and the toroidal core has a notch extending from the inner circumferential side to the outer circumferential side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60119460A JPS61278115A (en) | 1985-05-31 | 1985-05-31 | Transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60119460A JPS61278115A (en) | 1985-05-31 | 1985-05-31 | Transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61278115A true JPS61278115A (en) | 1986-12-09 |
Family
ID=14761905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60119460A Pending JPS61278115A (en) | 1985-05-31 | 1985-05-31 | Transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61278115A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5506764A (en) * | 1994-01-31 | 1996-04-09 | Astec International, Ltd. | Electrical power converter with step-gapped transformer |
| US8512670B2 (en) | 2004-11-24 | 2013-08-20 | Kaneka Corporation | Process for producing graphite film |
-
1985
- 1985-05-31 JP JP60119460A patent/JPS61278115A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5506764A (en) * | 1994-01-31 | 1996-04-09 | Astec International, Ltd. | Electrical power converter with step-gapped transformer |
| US8512670B2 (en) | 2004-11-24 | 2013-08-20 | Kaneka Corporation | Process for producing graphite film |
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