JPH10261524A - High voltage transformer - Google Patents
High voltage transformerInfo
- Publication number
- JPH10261524A JPH10261524A JP9064054A JP6405497A JPH10261524A JP H10261524 A JPH10261524 A JP H10261524A JP 9064054 A JP9064054 A JP 9064054A JP 6405497 A JP6405497 A JP 6405497A JP H10261524 A JPH10261524 A JP H10261524A
- Authority
- JP
- Japan
- Prior art keywords
- core
- shaped core
- bobbin
- type
- stroke
- 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
- Insulating Of Coils (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は高圧トランスに関
し、特にそ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 high-voltage transformer, and more particularly to a shape of a core thereof.
【０００２】[0002]
【従来の技術】従来の家庭用高周波加熱装置に用いられ
るインバータ電源用高圧トランスのような小型トランス
は図３に示すように、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には金属の粉
末で成形した第１のＵ型コア４第２のＵ型コア５とが組
み立てられ、第１のＵ型コア４と第２の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. 3, a small transformer such as a high-voltage transformer for an inverter power supply used in a conventional household high-frequency heating apparatus has a primary winding 2 and a secondary winding 3 wound on a bobbin 1. Is lined. Also, a first U-shaped core 4 and a second U-shaped core 5 formed of metal powder are assembled on the bobbin 1, and the first U-shaped core 4 and the second U-shaped core 5 are made of metal. It is fixed to the bobbin by a fixing bracket 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上
記高圧トランスはコアのストロークが長いと金属の粉末
でコアを成形するため、焼成時にヒビや変形がおこりや
すくなる。またコアの製造設備が大規模になり同一設備
で１回当たりに得られるコアの数が少なく生産歩留りが
悪いという問題を有していた。However, in the conventional high-voltage transformer described above, if the stroke of the core is long, the core is formed from metal powder, so that cracks and deformation are likely to occur during firing. In addition, there has been a problem that the core manufacturing equipment has become large-scale, and the number of cores that can be obtained at one time by the same equipment is small, resulting in poor production yield.
【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、コアのストロークを短くすることにより、
コア焼成時のヒビや変形を小さくし歩留りを向上するこ
とができ、さらに比較的小規模な設備で１回当たりに得
られる数を多くすることを目標としている。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and shortens the stroke of the core.
The goal is to reduce cracks and deformation during core firing and improve the yield, and to increase the number obtained at one time with relatively small-scale equipment.
【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
る金属の粉末で成形した第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Ｉ型コアと、前記第１のＵ型コアでＩ型コア
をはさむように組み立てられた同形の第２のＵ型コア
と、前記第１のＵ型コアと前記同形の第２のＵ型コアを
ボビンに固定する固定具を有する高圧トランスのコアの
ストロークを短くすることができ、焼成時のヒビや変形
を小さくすることができる。また、設備も小型化でき、
１回当たりに得られる数を多くすることができる。BEST MODE FOR CARRYING OUT THE INVENTION The present invention relates to a bobbin, a plurality of windings wound on the bobbin, a first U-shaped core formed of metal powder assembled to the bobbin, An I-shaped core assembled to the bobbin with a gap with respect to a U-shaped core, a second U-shaped core of the same shape assembled to sandwich the I-shaped core with the first U-shaped core, The stroke of the core of the high-voltage transformer having the fixture for fixing the U-shaped core and the same second U-shaped core to the bobbin can be shortened, and cracks and deformation during firing can be reduced. Also, the equipment can be downsized,
The number obtained at one time can be increased.
【０００６】以下、本発明の実施例について図面を用い
て説明する。図１は本発明の一実施例の家庭で用いる高
周波加熱装置の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. FIG. 1 is a sectional view of a main part of a high-voltage transformer for an inverter power supply of a high-frequency heating device used at home 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には金
属の粉末で成形した第１のＵ型コア７と同形の第２のＵ
型コア８の間にＩ型コア９とが組み立てられ、第１と第
２のＵ型コア７、８とＩ型コア９は固定金具６にてボビ
ンに固定されている構造となっている。In FIG. 1, a primary winding 2 and a secondary winding 3 are wound on a bobbin 1. The bobbin 1 has a second U-shaped core 7 which is the same as the first U-shaped core 7 formed of metal powder.
An I-shaped core 9 is assembled between the mold cores 8, and the first and second U-shaped cores 7, 8 and the I-shaped core 9 are fixed to a bobbin with fixing brackets 6.
【０００８】本実施例では、Ｕ型コア７と８の間にＩ型
コア９を入れることにより、Ｕ型コアのストロークを短
くすることができ、同形のＵ型コアを使用することがで
きる。In this embodiment, by inserting the I-shaped core 9 between the U-shaped cores 7 and 8, the stroke of the U-shaped core can be shortened, and the same U-shaped core can be used.
【０００９】そして図２（ｂ）に示すようにストローク
の長さＬを短くすることができるため、焼成時のヒビや
変形が少なくなり歩留りが向上する。なお図２（ａ）は
ストロークの長さの長さＬを不良率との関係を示した図
で、ストロークの長さが短くなると不良率が顕著に減少
することがわかる。Since the length L of the stroke can be reduced as shown in FIG. 2B, cracks and deformation during firing are reduced, and the yield is improved. FIG. 2A shows the relationship between the length L of the stroke and the defect rate. It can be seen that the defect rate decreases significantly as the stroke length decreases.
【００１０】[0010]
【発明の効果】以上のように本発明の高圧トランスにお
いては、コアのストロークを短くすることにより焼成時
のヒビや変形を小さくし歩留りが向上し、設備も小型化
でき、１回当たりに得られるコアの数を多く生産するこ
とが可能になる。As described above, in the high-voltage transformer according to the present invention, by shortening the stroke of the core, cracks and deformation during firing are reduced, the yield is improved, and the equipment can be downsized. It is possible to produce a large number of cores.
【図１】本発明の一実施例における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 according to an embodiment of the present invention.
【図２】（ａ）高圧トランスのコアの長さと不良率との
関係を示す図 （ｂ）Ｕ型コアの外観図2A is a diagram showing a relationship between the length of a core of a high-voltage transformer and a defect rate. FIG. 2B is an external view of a U-shaped core.
【図３】従来の高圧トランスの要部断面図FIG. 3 is a sectional view of a main part of a conventional high-voltage transformer.
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 Ｉ型コア DESCRIPTION OF SYMBOLS 1 Bobbin 2 Primary winding 3 Secondary winding 6 Fixture 7 First U-shaped core 8 Second U-shaped core 9 I-shaped core
Claims (1)
巻線と、前記ボビンに組み立てられる金属の粉末で成形
した第１のＵ型コアと、前記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Ｉ型コアと、前
記Ｕ型コアでＩ型コアをはさむように組立てられた同形
の第２のＵ型コアと、前記第１のＵ型コアと前記第２の
Ｕ型コアをボビンに固定する固定具を有する高圧トラン
ス。1. A bobbin, a plurality of windings wound on the bobbin, a first U-shaped core formed of metal powder to be assembled on the bobbin, and a gap with respect to the U-shaped core. An I-shaped core assembled to a bobbin, a second U-shaped core of the same shape assembled so as to sandwich the I-shaped core with the U-shaped core, the first U-shaped core and the second U-shaped core; A high-voltage transformer having a fixture for fixing to a bobbin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9064054A JPH10261524A (en) | 1997-03-18 | 1997-03-18 | High voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9064054A JPH10261524A (en) | 1997-03-18 | 1997-03-18 | High voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10261524A true JPH10261524A (en) | 1998-09-29 |
Family
ID=13247005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9064054A Pending JPH10261524A (en) | 1997-03-18 | 1997-03-18 | High voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10261524A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001015259A (en) * | 1999-06-30 | 2001-01-19 | Toshiba Corp | Microwave oven |
-
1997
- 1997-03-18 JP JP9064054A patent/JPH10261524A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001015259A (en) * | 1999-06-30 | 2001-01-19 | Toshiba Corp | Microwave oven |
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