JPH0356023Y2 - - Google Patents
Info
- Publication number
- JPH0356023Y2 JPH0356023Y2 JP1985024841U JP2484185U JPH0356023Y2 JP H0356023 Y2 JPH0356023 Y2 JP H0356023Y2 JP 1985024841 U JP1985024841 U JP 1985024841U JP 2484185 U JP2484185 U JP 2484185U JP H0356023 Y2 JPH0356023 Y2 JP H0356023Y2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- resin
- molded
- voltage coil
- mold resin
- 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
Links
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 229920003002 synthetic resin Polymers 0.000 claims description 8
- 239000000057 synthetic resin Substances 0.000 claims description 8
- 239000012212 insulator Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 description 20
- 239000011347 resin Substances 0.000 description 20
- 239000000463 material Substances 0.000 description 6
- 238000000465 moulding Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 210000003298 dental enamel Anatomy 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Insulating Of Coils (AREA)
Description
【考案の詳細な説明】
〔考案の技術分野〕
本考案はコイルのみを、若しくはコイルと鉄心
との両者を合成樹脂によりモールドしてなるモー
ルド形変成器に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a molded transformer in which only the coil or both the coil and the iron core are molded with synthetic resin.
モールド形変成器は大形になるとコイルとモー
ルド材である合成樹脂との間に熱膨張係数の相違
により剥離を生じたり、合成樹脂中に亀裂を生じ
たりする。従来はこれを防止するために例えば実
公昭43−10893号に示してあるようにコイルと合
成樹脂との間にゴム等の緩衝材を介在させて合成
樹脂の硬化収縮或いは熱衝撃による応力を緩和さ
せるようにしていた。しかしながらこの構造では
緩衝材とモールド樹脂との間に熱膨張係数の相違
によりこれらの間に剥離を生じる。この剥離の結
果、緩衝材の端部とモールド樹脂との間のひけに
よつて空洞を生じこの部分に外部からの熱衝撃、
或いは運転中の温度上昇による応力が集中して亀
裂の助長原因になり、その亀裂に電界が集中して
コロナ放電も誘発して最終的には大きな破損に到
るおそれがある。
When a molded transformer becomes large in size, separation may occur between the coil and the synthetic resin that is the molding material due to a difference in coefficient of thermal expansion, or cracks may occur in the synthetic resin. Conventionally, in order to prevent this, a cushioning material such as rubber was interposed between the coil and the synthetic resin to alleviate stress caused by curing shrinkage or thermal shock of the synthetic resin, as shown in Utility Model Publication No. 43-10893. I was trying to let him do it. However, in this structure, separation occurs between the cushioning material and the mold resin due to the difference in thermal expansion coefficient between them. As a result of this peeling, a cavity is created due to sink marks between the edge of the cushioning material and the molding resin, and this area is exposed to thermal shock from the outside.
Alternatively, stress due to temperature rise during operation may concentrate and promote cracks, and the electric field may concentrate on the cracks, inducing corona discharge and ultimately leading to major damage.
そこで本考案の目的は、コイルとモールド樹脂
との間の剥離現象を効果的に防止できると共にそ
の剥離防止構造がモールド樹脂内に空洞を生じさ
せてしまうようなことも併せて防止できるモール
ド形変成器を提供することにある。
Therefore, the purpose of this invention is to effectively prevent the peeling phenomenon between the coil and the mold resin, and the peel-off prevention structure also prevents the formation of cavities in the mold resin. It is about providing the equipment.
本考案によるモールド形変成器は、コイルの内
周及び外周をこれらとモールド樹脂層との間に介
在されるようにして金網等導電性の網目状補強帯
で覆い且つこれら補強帯を上記コイルの夫々内周
側及び外周側導体と同電位にしてなり、この補強
帯によりモールド樹脂とコイルとの間の剥離を防
止すると共に、この補強帯とモールド樹脂との間
で剥離することも防止できるようにしたものであ
る。
The molded transformer according to the present invention covers the inner and outer peripheries of the coil with conductive mesh reinforcing bands, such as wire mesh, interposed between these and the molded resin layer, and these reinforcing bands are attached to the coil. They are made to have the same potential as the inner circumferential side and outer circumferential side conductors, respectively, and this reinforcing band prevents separation between the mold resin and the coil, and also prevents separation between this reinforcing band and the mold resin. This is what I did.
以下本考案の一実施例について第１図及び第２
図を参照しながら説明する。この実施例のモール
ド形変成器１は環状鉄心２に低圧コイル３及び高
圧コイル４を同心配置しこれを基台５と共に合成
樹脂によりモールドしてなるものであり、６がそ
のモールド樹脂である。さてこのものにおいて、
高圧コイル４の内側に位置される低圧コイル３の
外周にはモールド樹脂６との間の剥離を防止する
目的で従来と同様にコルク、ゴム等からなる緩衝
材７が設けられ、そしてその緩衝材７の外周には
この緩衝材７の両面を同電位にするための導電性
塗料８を塗布しこれを低圧コイル３の外周側の導
体と電気的に接続している。一方、高圧コイル４
において、その最内層のコイル部４ａは合成樹脂
液の含浸性に優れた綿またはガラス繊維を被覆し
たフオルマール絶縁、あるいはエナメル絶縁電線
を巻回してなり、その他の部分は綿またはガラス
繊維を被覆していないフオルマール絶縁あるいは
エナメル絶縁電線が用いられている。またこのよ
うな高圧コイル４の内周はこの高圧コイル４の層
間絶縁物と同様の層間絶縁物９を介して金網等導
電性を有する網目状の補強帯１０ａにより１巻回
未満にて覆われ、更に高圧コイル４の外周も上記
同様の補強帯１０ｂにより覆われる。そして内周
側の補強帯１０ａ及び外周側の補強帯１０ｂは
夫々高圧コイル４の内周側導体に及び外周側導体
に電気的に接続されそれらと同電位に保たれるよ
うになつている。各部材の以上のような配置状態
で前述のモールドが行なわれるものである。
The following is an example of the present invention shown in Figures 1 and 2.
This will be explained with reference to the figures. The molded transformer 1 of this embodiment has a low-voltage coil 3 and a high-voltage coil 4 arranged concentrically around an annular iron core 2, and is molded together with a base 5 of synthetic resin, and 6 is the molded resin. Now, in this thing,
A cushioning material 7 made of cork, rubber, etc. is provided on the outer periphery of the low-voltage coil 3 located inside the high-voltage coil 4 in order to prevent separation from the molded resin 6, as in the past. A conductive paint 8 is coated on the outer periphery of the buffer material 7 to make both sides of the cushioning material 7 have the same potential, and this is electrically connected to the conductor on the outer periphery side of the low voltage coil 3. On the other hand, high voltage coil 4
In this case, the innermost coil part 4a is made of formal insulation coated with cotton or glass fiber that is highly impregnable with synthetic resin liquid, or wound with enamel insulated wire, and the other parts are made of cotton or glass fiber coated. Non-formal or enamel insulated wire is used. Further, the inner periphery of such a high voltage coil 4 is covered with less than one turn of a conductive mesh reinforcing band 10a such as a wire mesh via an interlayer insulator 9 similar to the interlayer insulator of this high voltage coil 4. Furthermore, the outer periphery of the high voltage coil 4 is also covered with a reinforcing band 10b similar to the above. The reinforcing band 10a on the inner circumferential side and the reinforcing band 10b on the outer circumferential side are electrically connected to the inner circumferential side conductor and the outer circumferential side conductor of the high voltage coil 4, respectively, and are kept at the same potential as these. The above-described molding is performed with each member arranged in the above-described manner.
以上の構成によればモールド樹脂６層を形成す
るモールド工程において、補強帯１０ａ，１０ｂ
が金網等のように網目状をなしているのでモール
ド樹脂６がその網目内に入り組むように浸透しモ
ールド樹脂６と確実な結合状態を呈する。これに
よりモールド樹脂６に硬化収縮或いは熱衝撃によ
る応力が発生してもモールド樹脂６は補強帯１０
ａ，１０ｂの網目によつて線膨脹が細かく分断さ
れるので、モールド樹脂６と補強帯１０ａ，１０
ｂとの間に剥離を発生することがない。またモー
ルド樹脂６と高圧コイル４との境界に剥離が発生
しても、その部分は補強帯１０ａ，１０ｂの内側
であり、補強帯１０ａ，１０ｂは高圧コイル４の
最外周または最内周と同電位になつているので、
その剥離部分に電界が集中することはなく、コロ
ナ放電を発生することがない。 According to the above configuration, in the molding process of forming six layers of mold resin, the reinforcing bands 10a, 10b
Since it has a mesh shape like a wire mesh or the like, the mold resin 6 permeates into the mesh so as to form a secure bond with the mold resin 6. As a result, even if stress occurs in the mold resin 6 due to curing shrinkage or thermal shock, the mold resin 6 will remain in the reinforcing band 10.
Since the linear expansion is finely divided by the meshes of a and 10b, the mold resin 6 and reinforcing bands 10a and 10
No peeling occurs between the film and the film. Furthermore, even if peeling occurs at the boundary between the molded resin 6 and the high voltage coil 4, that part is inside the reinforcing bands 10a, 10b, and the reinforcing bands 10a, 10b are the same as the outermost or innermost periphery of the high voltage coil 4. Because it is at electric potential,
The electric field will not be concentrated on the peeled portion, and no corona discharge will occur.
従つて従来のようにモールド樹脂６中に剥離に
伴つて空洞が形成されると云つたことはなくなり
その空洞からの亀裂発生、そしてコロナ放電の誘
発といつた不都合も確実に防止できるものであ
る。 Therefore, unlike in the past, cavities are not formed in the mold resin 6 due to peeling, and problems such as cracks from the cavities and induction of corona discharge can be reliably prevented. .
以上のように本考案によればコイルとモールド
樹脂との間に導電性を有する網目状の補強帯を介
在したことにより、コイルとモールド樹脂との間
に、剥離現象によるコロナ放電の発生を確実に防
止できるモールド形変成器を提供できる。
As described above, according to the present invention, by interposing the conductive mesh reinforcing band between the coil and the molding resin, it is ensured that corona discharge occurs due to the peeling phenomenon between the coil and the molding resin. It is possible to provide a molded transformer that can prevent
第１図は本考案の一実施例を示す要部の拡大縦
断面図、第２図は全体的な縦断面図である。
図中、１はモールド形変成器、２は鉄心、３は
低圧コイル、４は高圧コイル、６はモールド樹
脂、９は層間絶縁物、１０ａ，１０ｂは補強帯で
ある。
FIG. 1 is an enlarged longitudinal cross-sectional view of a main part showing an embodiment of the present invention, and FIG. 2 is an overall longitudinal cross-sectional view. In the figure, 1 is a molded transformer, 2 is an iron core, 3 is a low voltage coil, 4 is a high voltage coil, 6 is a molded resin, 9 is an interlayer insulator, and 10a, 10b are reinforcing bands.
Claims (1)
び外周を夫々適当な絶縁物を介して金網等導電性
の網目状補強帯で覆い且つこれら補強帯を夫々コ
イルの内周側及び外周側電位と等しくしてなるモ
ールド形変成器。 The inner and outer peripheries of the coil to be molded with synthetic resin are respectively covered with conductive mesh reinforcing bands such as wire mesh through appropriate insulators, and these reinforcing bands are made equal in potential to the inner and outer periphery sides of the coil, respectively. A mold type transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985024841U JPH0356023Y2 (en) | 1985-02-25 | 1985-02-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985024841U JPH0356023Y2 (en) | 1985-02-25 | 1985-02-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61142423U JPS61142423U (en) | 1986-09-03 |
| JPH0356023Y2 true JPH0356023Y2 (en) | 1991-12-16 |
Family
ID=30519371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985024841U Expired JPH0356023Y2 (en) | 1985-02-25 | 1985-02-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0356023Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5375420A (en) * | 1976-12-16 | 1978-07-04 | Fuji Electric Co Ltd | Mold transformer winding |
-
1985
- 1985-02-25 JP JP1985024841U patent/JPH0356023Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5375420A (en) * | 1976-12-16 | 1978-07-04 | Fuji Electric Co Ltd | Mold transformer winding |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61142423U (en) | 1986-09-03 |
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