JPH10261532A - High-voltage transformer for compact inverter power supply - Google Patents

High-voltage transformer for compact inverter power supply

Info

Publication number
JPH10261532A
JPH10261532A JP9064055A JP6405597A JPH10261532A JP H10261532 A JPH10261532 A JP H10261532A JP 9064055 A JP9064055 A JP 9064055A JP 6405597 A JP6405597 A JP 6405597A JP H10261532 A JPH10261532 A JP H10261532A
Authority
JP
Japan
Prior art keywords
bobbin
core
coil winding
same shape
power supply
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
Application number
JP9064055A
Other languages
Japanese (ja)
Inventor
Hidetomo Nagata
英智 永田
Makoto Mihara
誠 三原
Shinichi Sakai
伸一 酒井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP9064055A priority Critical patent/JPH10261532A/en
Publication of JPH10261532A publication Critical patent/JPH10261532A/en
Pending legal-status Critical Current

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  • Coils Of Transformers For General Uses (AREA)

Abstract

PROBLEM TO BE SOLVED: To rationalize production by making symmetrical the shape of a core and hence forming two U-shaped cores in the same shape and enabling the same mold to be used. SOLUTION: A primary coil winding 2 and a secondary coil winding 3 are wound around a bobbin 1. Also, a first U-type core 7 and a second U-type core 8 that are in the same shape and are symmetrical are assembled to the bobbin 1 and are electrically connected. Further, the first and second U-type cores 7 and 8 are fixed to the bobbin by a fixing metal fitting 6. By using the first and second U-type cores 7 and 8 in the same shape, the same mold can be used for production. Also, a U-type core is used, where the left and right lengths of the U-type core in the same shape being assembled to the bobbin 1 are allowed to differ in a range where a gap 9 can be provided under a primary coil winding. In this manner, by providing the gap 9 at the primary coil winding, a magnetic field directly below the coil winding can be leaked, thus preventing the core from becoming saturated.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は小型インバータ電源
用高圧トランスに関し、特に粉末成型で得られる小型の
コアの形状に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small-sized high-voltage transformer for an inverter power supply, and more particularly to a small-sized core obtained by powder molding.

【０００２】[0002]

【従来の技術】従来のインバータ電源用高圧トランスは
図２に示すように、ボビン１に一次巻線２と二次巻線３
とが巻線されている。また、ボビン１にＵ型コア４とＵ
型コア５とが組み立てられ、これらのＵ型コア４とＵ型
コア５は金属製の固定金具６にてボビンに固定されてい
る。2. Description of the Related Art As shown in FIG. 2, a conventional high voltage transformer for an inverter power supply has a primary winding 2 and a secondary winding 3 on a bobbin 1.
And are wound. Also, the U-shaped core 4 and the U-shaped
The mold core 5 is assembled, and the U-shaped core 4 and the U-shaped core 5 are fixed to the bobbin with a metal fixture 6.

【０００３】[0003]

【発明が解決しようとする課題】しかしながら従来の家
庭用電子レンジ等に用いられている小型インバータ電源
用高圧トランスはコアの飽和防止のため、一次巻線下に
ギャップをとることにより、コアの形状が異形になるた
め、同一金型を使用することができなく、生産性の低下
をまねくという問題を有していた。However, a conventional high-voltage transformer for a small inverter power supply used in a home microwave oven or the like has a gap below the primary winding to prevent saturation of the core. However, there is a problem that the same mold cannot be used because of the irregular shape, which leads to a decrease in productivity.

【０００４】[0004]

【課題を解決するための手段】本発明は上記課題を解決
するもので、コアの形状を対称形状にすることにより二
つのＵ型コアを同一形状とし、同一金型を使用すること
ができ、生産の合理化を可能とすることができるように
した。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and two U-shaped cores can be formed in the same shape by using a symmetrical shape of the core, and the same mold can be used. We have made it possible to streamline production.

【０００５】[0005]

【発明の実施の形態】本発明は、ボビンと、前記ボビン
に巻線された複数の巻線と、前記ボビンに組み立てられ
る左右のコアのストローク長が異なる第１のＵ型コア
と、前記第１のＵ型コアに対しあるギャップをもって組
み立てられる第１のＵ型コアと同一形状の第２のＵ型コ
アと、前記第１および第２のＵ型コアをボビンに固定す
る固定具を有する構成とした。そして同一形状のコアを
用いることにより、同一金型で生産することができ、か
つコアの形状を対称形状にすることにより、巻線下にギ
ャップをとることができ、コアの飽和を防止することが
できる。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention provides a bobbin, a plurality of windings wound on the bobbin, a first U-shaped core having different stroke lengths of left and right cores assembled on the bobbin, A configuration having a second U-shaped core having the same shape as the first U-shaped core assembled with a certain gap with respect to one U-shaped core, and a fixture for fixing the first and second U-shaped cores to a bobbin. And By using cores of the same shape, it is possible to produce with the same mold, and by making the shape of the core symmetrical, a gap can be taken under the winding to prevent saturation of the core. Can be.

【０００６】以下、本発明の実施例について図面を用い
て説明する。 （実施例）図１は本発明の一実施例の小型インバータ電
源用高圧トランスの要部断面図である。Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment) FIG. 1 is a sectional view of a main part of a high-voltage transformer for a small inverter power supply according to an embodiment of the present invention.

【０００７】図１において、ボビン１には一次巻線２と
二次巻線３とが巻線されている。また、ボビン１には同
一形状の対称形の第１のＵ型コア７および第２のＵ型コ
ア８とが組み立てられ電気的に結合している。さらに、
第１および第２のＵ型コア７および８は固定金具６でボ
ビンに固定されている。In FIG. 1, a primary winding 2 and a secondary winding 3 are wound on a bobbin 1. The bobbin 1 is assembled with a symmetrical first U-shaped core 7 and a second U-shaped core 8 having the same shape and electrically connected to each other. further,
The first and second U-shaped cores 7 and 8 are fixed to the bobbin with fixing brackets 6.

【０００８】本実施例では、同一形状の第１および第２
Ｕ型コア７、８を用いることにより、同一の金型を使用
して生産可能である。In the present embodiment, the first and second sections having the same shape are formed.
By using the U-shaped cores 7 and 8, it is possible to produce using the same mold.

【０００９】また、実施例ではボビン１に組み立てる同
一形状のＵ型コアの左右の長さを一次巻線下にギャップ
９がとれる範囲で異なるようにしたＵ型コアを使用して
いる。このようにして、一次巻線のところにギャップ９
を設けることにより、巻線直下の磁界を漏洩しコアが飽
和状態になることを防いでいる。In the embodiment, a U-shaped core is used in which the U-shaped cores of the same shape to be assembled on the bobbin 1 are different in the left and right lengths within a range where the gap 9 can be taken under the primary winding. In this way, the gap 9 at the primary winding
Is provided to prevent the magnetic field immediately below the winding from leaking and preventing the core from becoming saturated.

【００１０】[0010]

【発明の効果】以上のように小型インバータ電源用高圧
トランスにおいては、自動設備を用いるため、同一形状
の対称形Ｕ型コアを使用することにより、同一金型を使
用することが可能で、焼成時のコア外径寸法の誤差を軽
減することができ、またＵ型コアのストローク長さを変
えることにより巻線の下にギャップを設置し、巻線直下
の強磁界を漏らすことにより、コア飽和を防止すること
ができる。As described above, in the high-voltage transformer for a small inverter power supply, since the automatic equipment is used, the same mold can be used by using the symmetrical U-shaped core having the same shape. The error of the core outer diameter at the time can be reduced, and the gap is installed under the winding by changing the stroke length of the U-shaped core, and the strong magnetic field right under the winding is leaked, so that the core is saturated. Can be prevented.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の一実施例のインバータ電源用高圧トラ
ンスの要部断面図FIG. 1 is a sectional view of a main part of a high-voltage transformer for an inverter power supply according to an embodiment of the present invention.

【図２】従来の小型のレンジインバータ電源用高圧トラ
ンスの要部断面図FIG. 2 is a sectional view of a main part of a conventional small high-voltage transformer for a range inverter power supply.

【符号の説明】[Explanation of symbols]

１ ボビン ２ １次巻線 ３ ２次巻線 ６ 固定金具 ７ 第１のＵ型コア ８ 第２のＵ型コア ９ ギャップ DESCRIPTION OF SYMBOLS 1 Bobbin 2 Primary winding 3 Secondary winding 6 Fixture 7 First U-shaped core 8 Second U-shaped core 9 Gap

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】ボビンと、前記ボビンに巻線された複数の
巻線と、前記ボビンに組み立てられるコアの左右ストロ
ーク長が異なる第１のＵ型コアと、前記第１のＵ型コア
に対しあるギャップをもって前記ボビンに組み立てられ
る第１のＵ型コアと同一形状の第２のＵ型コアと、前記
第１および第２のＵ型コアをボビンに固定する固定具を
有する小型インバータ電源用高圧トランス。1. A bobbin, a plurality of windings wound on the bobbin, a first U-shaped core having left and right stroke lengths of cores assembled on the bobbin, and a first U-shaped core. A high voltage for a small inverter power supply, comprising: a second U-shaped core having the same shape as the first U-shaped core assembled to the bobbin with a certain gap; and a fixture for fixing the first and second U-shaped cores to the bobbin. Trance. 【請求項２】ギャップを一次巻線に対応する位置する設
けた請求項１記載の小型インバータ電源用高圧トラン
ス。2. The high-voltage transformer for a small inverter power supply according to claim 1, wherein the gap is provided corresponding to the primary winding.
JP9064055A 1997-03-18 1997-03-18 High-voltage transformer for compact inverter power supply Pending JPH10261532A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9064055A JPH10261532A (en) 1997-03-18 1997-03-18 High-voltage transformer for compact inverter power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9064055A JPH10261532A (en) 1997-03-18 1997-03-18 High-voltage transformer for compact inverter power supply

Publications (1)

Publication Number Publication Date
JPH10261532A true JPH10261532A (en) 1998-09-29

Family

ID=13247035

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9064055A Pending JPH10261532A (en) 1997-03-18 1997-03-18 High-voltage transformer for compact inverter power supply

Country Status (1)

Country Link
JP (1) JPH10261532A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001015259A (en) * 1999-06-30 2001-01-19 Toshiba Corp Microwave oven

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001015259A (en) * 1999-06-30 2001-01-19 Toshiba Corp Microwave oven

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