JPS62193108A - Reinforcing film of small-sized electric winding part and production thereof - Google Patents
Reinforcing film of small-sized electric winding part and production thereofInfo
- Publication number
- JPS62193108A JPS62193108A JP61032804A JP3280486A JPS62193108A JP S62193108 A JPS62193108 A JP S62193108A JP 61032804 A JP61032804 A JP 61032804A JP 3280486 A JP3280486 A JP 3280486A JP S62193108 A JPS62193108 A JP S62193108A
- Authority
- JP
- Japan
- Prior art keywords
- small
- thermosetting resin
- transformer
- resin film
- coating
- 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
- 238000004804 winding Methods 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 230000003014 reinforcing effect Effects 0.000 title claims description 7
- 229920005989 resin Polymers 0.000 claims abstract description 30
- 239000011347 resin Substances 0.000 claims abstract description 30
- 238000000576 coating method Methods 0.000 claims abstract description 16
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 14
- 239000003822 epoxy resin Substances 0.000 claims abstract description 12
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000009503 electrostatic coating Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000007654 immersion Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims 1
- 239000010408 film Substances 0.000 abstract description 18
- 239000010409 thin film Substances 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 description 10
- 239000000853 adhesive Substances 0.000 description 9
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 238000010422 painting Methods 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
Landscapes
- Insulating Of Coils (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、小形トランス、チョークコイルなどの小形電
気巻線部品に関し、例えば、テレビジョン、ビデオテー
プレコーダーなどの電気機器、写真カメラ、閃光発光器
などの光学機器に利用するところの電気巻線部品に適す
る。Detailed Description of the Invention "Industrial Application Field" The present invention relates to small electrical winding components such as small transformers and choke coils, and is used in electrical equipment such as televisions and video tape recorders, photographic cameras, and flashlight emitting devices. Suitable for electrical winding parts used in optical equipment such as containers.
「従来の技術」
小形トランスやチョークコイルなどの電気巻線部品はボ
ビンに導線が巻線され、また、鉄心としてフェライトコ
アを備えたものが多い。``Prior Art'' Electrical winding components such as small transformers and choke coils have conductor wire wound around a bobbin, and many have a ferrite core as an iron core.
第５図〜第７図は写真撮影用の閃光発光器に組み込まれ
る発振トランスの従来例である。このトランスはフェラ
イト材からなる同形状のＥ形コア１．２と、巻心となる
筒状部を有する電気絶縁性の鍔付ボビン３と、ボビン３
に巻装されたコイル４と、ボビン鍔に植設された接続端
子５とから構成されている。FIGS. 5 to 7 show conventional examples of oscillation transformers incorporated in flashlight emitters for photography. This transformer includes an E-shaped core 1.2 of the same shape made of ferrite material, an electrically insulating flanged bobbin 3 having a cylindrical portion serving as a winding core, and a bobbin 3.
It consists of a coil 4 wound around the bobbin and a connecting terminal 5 implanted in the bobbin collar.
そして、上記コイル４としては、低圧コイルと高圧コイ
ルとを備えたもの、また、低圧及び高圧コイルの他に帰
還用のコイルを備えたものがあり、コイル各々の巻始端
と巻終端とが各接続端子５の根元部分にからげられ半田
付けされている。The coil 4 may include a low-voltage coil and a high-voltage coil, or a feedback coil in addition to the low-voltage and high-voltage coils. It is attached to the base of the connection terminal 5 and soldered.
この小形トランスは組込まれたコア１．２の高さＨと左
右脚方向のコアｌ、２の長さしとによって外形の大きさ
がほぼ定まるが、最近では高さＨ及び幅りが共に８ｍｍ
程度のトランスが既に実用に供されている。The external size of this small transformer is approximately determined by the height H of the incorporated core 1.2 and the length of the cores L and 2 in the left and right leg directions, but recently the height H and width are both 8 mm.
Several transformers are already in practical use.
［発明が解決しようとする問題点］
上記のようなトランスは形態が小形化されるために、電
気的なまた機械的ないろいろな問題が発生するが、特に
、今日では下記する問題が重大な解決課題となっている
。[Problems to be Solved by the Invention] As the transformers described above are miniaturized, various electrical and mechanical problems occur, but the following problems are especially serious today. This is an issue to be solved.
（１） ボビン鍔の一方側を肉厚として、この鍔に接続
端子５を植設させるが、形態を小形化する関係で、この
ボビン鍔の肉厚が不充分となり、接続α１）■子５の埋
込みが少なくなってこの端子５が抜は出してしまうこと
がある。このような接続端子５の抜は外れはトランスの
生産過程のみならず、トランスを機器に組み付けた後に
発生することがある。機器の振動または活動したトラン
スの振動によると考えられている。(1) One side of the bobbin flange is made thick, and the connection terminal 5 is implanted in this flange, but due to the miniaturization of the form, the thickness of this bobbin flange is insufficient, and the connection α1) If the embedding of the terminal 5 is reduced, the terminal 5 may be pulled out. Such disconnection of the connection terminal 5 may occur not only during the production process of the transformer, but also after the transformer is assembled into equipment. It is thought to be caused by equipment vibration or vibration from an active transformer.
（２） 上記したような小形トランスは高圧コイルとし
て０．０５ｍｍφ程度の非常に細い電線が使われ、この
電線の端部が接続端子５の根元に半田付けされている。(2) In the above-mentioned small transformer, a very thin electric wire of about 0.05 mmφ is used as the high voltage coil, and the end of this electric wire is soldered to the base of the connecting terminal 5.
そのため、接続端子５がトランスの組み付は作業などで
曲げられる場合に、電線が引っ張られて簡単に断線し不
良品となってしまうことがある。Therefore, when the connecting terminal 5 is bent during the work of assembling the transformer, the electric wire may be pulled and easily broken, resulting in a defective product.
（３） この種のトランスのコアは２つのＥ形コアｌ
、２の脚端面を接着剤で接合固定して組み込んである。(3) The core of this type of transformer is two E-shaped cores.
, 2 are assembled by joining and fixing the end faces of the legs with adhesive.
しかし、接合固定する脚端面の面積がトランス形態を小
形化する程少なくなるため、接合固定が不充分となって
コア１．２が外れることがある。However, as the size of the transformer becomes smaller, the area of the end face of the leg to be bonded and fixed becomes smaller, so that the core 1.2 may come off due to insufficient bonding and fixation.
この問題を解決する一つの方法として、接着力の強い接
着剤を使用することが考えられるが、しかし、この手段
ではコアを折損することがある。One possible solution to this problem is to use a strong adhesive, but this method may cause the core to break.
すなわち、この種のトランスではコア１．２の中央脚間
にギャップを設けることが多く、このギャップ内にも接
着剤を充填する。その結果、強力な接着剤はその凝固に
伴ってコア１．２の中央脚を強い力で引き寄せ、そのた
め、中央脚の根元部分に当たるヨーク部が折損すること
になる。That is, in this type of transformer, a gap is often provided between the central legs of the core 1.2, and this gap is also filled with adhesive. As a result, as the strong adhesive solidifies, it pulls the central leg of the core 1.2 with a strong force, causing the yoke portion corresponding to the root portion of the central leg to break.
「問題点を解決するための手段」
本発明は上記したところの問題点を解決することを目的
としたもので、第１の発明として、電気絶縁性の熱硬化
性樹脂粉末を小形電気巻線部品外面に付着した後に加熱
処理し、小形電気巻線部品の外表面全体または一部を除
く外表面を熱硬化性樹脂膜で被覆してなる小形電気巻線
部品の補強被膜を、第２の発明として、静電塗装或いは
浸漬流動塗装などの塗装手段によって小形電気巻線部品
の外表面に電気絶縁性の熱硬化性樹脂粉末を付着させる
工程と、付着させた熱硬化性樹脂粉末を加熱処理手段に
よって融着させる工程とをもって小形電気巻線部品の外
表面全体または一部を除（外表面を熱硬化性樹脂膜で被
覆する補強被膜の生産方法を提案する。"Means for Solving the Problems" The present invention aims to solve the above-mentioned problems, and as a first invention, electrically insulating thermosetting resin powder is used as a small electric winding wire. A reinforcing coating for a small electrical winding component, which is formed by applying a heat treatment to the outer surface of the component and coating the entire outer surface or all but a portion of the outer surface of the small electrical winding component with a thermosetting resin film, is applied to the second part. The invention includes a process of attaching an electrically insulating thermosetting resin powder to the outer surface of a small electric winding component by a coating method such as electrostatic coating or immersion flow coating, and a heat treatment of the attached thermosetting resin powder. We propose a method for producing a reinforcing coating in which the entire or part of the outer surface of a small electric winding component is covered with a thermosetting resin film by a step of fusing the small electric wire component.
「実施例」 次に、本発明の実施例について図面に沿って説明する。"Example" Next, embodiments of the present invention will be described with reference to the drawings.
本実施例は従来例として示した上記小形トランスに本発
明を実施したもので、第１図は小形トランスの底面方向
から見た斜視図、第２図は上記小形トランスの縦断側面
図である。In this embodiment, the present invention is implemented in the above-mentioned small transformer shown as a conventional example, and FIG. 1 is a perspective view of the small transformer as seen from the bottom side, and FIG. 2 is a longitudinal sectional side view of the above-mentioned small transformer.
図示する如（、本発明に係る小形トランスは熱硬化性樹
脂膜、例えば、エポキシ系樹脂膜６で外表面を被覆して
構成される。As shown in the figure, the small transformer according to the present invention is constructed by coating the outer surface with a thermosetting resin film, for example, an epoxy resin film 6.
エポキシ系樹脂は、周知のように一旦凝固させると不溶
性となる樹脂で、接着剤、塗料として使用できる性質が
あり、このことからトランス外面を強固なＮ膜で補強す
る。As is well known, epoxy resin is a resin that becomes insoluble once solidified, and has the property of being usable as an adhesive or paint, and for this reason, the outer surface of the transformer is reinforced with a strong N film.
すなわち、接続端子５の根元部分がエポキシ系樹脂によ
って固められるため、この樹脂の接着作用により接続端
子５がボビン３に確実に固定され、その上、接続端子５
の根元部分にからげて半田付けされている各々のコイル
端が上記同様に樹脂により固められるので、極細線のコ
イル端といえども断線のおそれがなく、また、コア１．
２は樹脂膜によりボビン３と一体的に固定されるから、
これらコア１．２の接着剤として接着力の弱いものを使
用してもこれらが外れることがない。That is, since the base portion of the connecting terminal 5 is hardened with the epoxy resin, the connecting terminal 5 is reliably fixed to the bobbin 3 due to the adhesive action of this resin.
Since each coil end that is soldered around the base of the core 1 is hardened with resin in the same way as described above, there is no risk of disconnection even if the end of the coil is made of ultra-fine wire.
2 is integrally fixed with the bobbin 3 by the resin film, so
Even if a weak adhesive is used as the adhesive for these cores 1.2, they will not come off.
なお、上記実施例ではトランス底面の一部、すなわち、
Ｅ形コア２のヨーク部外面を樹脂被覆せずこの部分を露
出させであるが、これは、トランスをプリント基板７な
どに取り付けたとき、トランス高さを可能なるかぎり低
くするためで、このような所定の条件がないときには、
第３図に示す如く、トランス外表面全体を被覆させる。In addition, in the above embodiment, a part of the bottom surface of the transformer, that is,
The outer surface of the yoke part of the E-shaped core 2 is not coated with resin and this part is exposed. This is to make the height of the transformer as low as possible when the transformer is attached to the printed circuit board 7, etc. When there are no predetermined conditions,
As shown in FIG. 3, the entire outer surface of the transformer is coated.
一方、エポキシ系樹脂膜は静電塗装または浸漬流動塗装
などの塗装方法によって形成することができる。On the other hand, the epoxy resin film can be formed by a coating method such as electrostatic coating or immersion flow coating.
一実施例として静電塗装による形成方法について説明す
る。As an example, a forming method using electrostatic coating will be described.
先ず、エポキシ系樹脂粉末を正極に荷電させて所定の空
室内でこの粉末を噴霧状となし、負極に荷電させた小形
トランスを噴霧状のエポキシ系粉末内を回転させながら
移動させる。First, epoxy resin powder is positively charged to form a spray in a predetermined cavity, and a small transformer negatively charged is rotated and moved within the spray of epoxy powder.
小形トランス外表面にエポキシ系粉末が付着した後はこ
のトランスを加熱炉内で、７０〜１５０°Ｃに加熱し、
付着粉末を熔融させ、数分〜数時間加熱した後に炉内よ
り取り出し凝固させる。After the epoxy powder has adhered to the outer surface of the small transformer, the transformer is heated to 70 to 150°C in a heating furnace.
The adhering powder is melted, heated for several minutes to several hours, and then taken out from the furnace and solidified.
上記の塗装手段によってエポキシ系樹脂がトランス外表
面に一体的に薄膜形成される。A thin film of epoxy resin is integrally formed on the outer surface of the transformer by the above-mentioned coating means.
なお、上記のように塗装する場合、接続端子５を支持具
によって保持して行なう関係で、接続端子５の根元部分
の膜形成が不充分となるようなときは、この根元部分に
エポキシ系樹脂粉末を吹き付けるようにすればよく、ま
た、第１図及び第２図に示したように、トランス外表面
の一部を露出させる場合には、塗装を行なう間その部分
にテープなどを接着する。In addition, when painting as described above, if the film formation at the root part of the connection terminal 5 is insufficient because the connection terminal 5 is held by a support tool, apply epoxy resin to this root part. Powder may be sprayed onto the surface of the transformer, and if a portion of the outer surface of the transformer is to be exposed as shown in FIGS. 1 and 2, tape or the like may be adhered to that portion during painting.
第４図は下面を除く外周囲がフェライトコアで形成され
た小形トランスに実施した例で、上記トランス形態形状
のコア８．９、ボビン１０、コイル１）、接続端子１２
から形成されており、このトランスの周囲には上記同様
にしてエポキシ系樹脂膜６が設けである。上記のような
トランスではコア８．９が導電性のあるマガジン系のフ
ェライト材で形成されることが多いため、各コア８．９
の口縁部８ａ、９ａと接続端子１２との間の電気絶縁が
問題となるが、上記したように樹脂膜６を設けることで
この電気絶縁が簡単に形成でき、これより接続端子１２
は上記口縁部８ａ、９ａに可能なるかぎり接近させるこ
とができて有利である。Fig. 4 shows an example of a small transformer in which the outer periphery except the lower surface is formed of a ferrite core.
The epoxy resin film 6 is provided around the transformer in the same manner as described above. In the above transformer, the core 8.9 is often made of conductive magazine-type ferrite material, so each core 8.9
Electrical insulation between the mouth edges 8a, 9a and the connection terminal 12 is a problem, but by providing the resin film 6 as described above, this electric insulation can be easily formed, and from this, the connection terminal 12
It is advantageous that the openings 8a, 9a can be brought as close as possible to the mouth edges 8a, 9a.
「発明の効果」
本発明は次に述べるような効果があり、トランス形態を
小形化する上に極めて有利である。"Effects of the Invention" The present invention has the following effects and is extremely advantageous in downsizing the transformer form.
（１）接続端子はその根元部分が樹脂によってボビンと
一体的に固められるため、接続端子の抜は外れが確実に
防止できる。(1) Since the base portion of the connecting terminal is solidified integrally with the bobbin by resin, it is possible to reliably prevent the connecting terminal from being pulled out or removed.
（２）接続端子に固着したコイル端部分は樹脂内で固め
られるので、接続端子の折り曲げなどによる断線のおそ
れがない。(2) Since the end portion of the coil fixed to the connecting terminal is hardened within the resin, there is no risk of disconnection due to bending of the connecting terminal.
（３）２つのコアは樹脂によってボビンと一体的に固定
されるため、コアの外れ、ズレが防止できると共に、コ
ア間の接着に接着力の弱いものが使用でき、接着剤の引
っ張りによるコア折損が解消される。なお、本発明はＥ
−Ｅ形コア、Ｅ−１形コアを使用したもの、また、これ
ら変形コアを使用したいずれのトランスについても実施
し得る。(3) Since the two cores are integrally fixed to the bobbin with resin, it is possible to prevent the cores from coming off or shifting, and a weak adhesive can be used to bond between the cores, causing the cores to break due to the tension of the adhesive. is resolved. Note that the present invention
- The present invention can be applied to transformers using an E-type core, an E-1 type core, or any transformer using these modified cores.
（４）トランス外表面が樹脂膜によって覆われているの
で、内部に湿気が侵入しないばかりでなく、外部からの
衝撃によってコアが部分的に欠けることがない。(4) Since the outer surface of the transformer is covered with a resin film, not only does moisture not intrude into the interior, but also the core will not be partially chipped due to external impact.
（５）塗装手段によって薄膜形成できるため、膜形成が
容易であり、量産に適する。(5) Since a thin film can be formed by painting means, film formation is easy and suitable for mass production.
（６）本発明は小形トランスの他に、チョークコイルな
ど接続端子を有する電気巻線部品について同様に実施し
て効果的であって、コアまたはボビンを備えた部品にか
ぎることな〈実施し得る。(6) In addition to small transformers, the present invention is also effective when applied to electric winding parts having connection terminals such as choke coils, and is not limited to parts having cores or bobbins. .
（７）本発明は接続端子の根元部分にのみ樹脂膜を形成
するように実施してもよい。(7) The present invention may be implemented in such a way that the resin film is formed only on the root portion of the connection terminal.
第１図は本発明を実施した小形トランスを低面方向から
見た斜視図、第２図は上記トランスの縦断側面図、第３
図及び第４図は他の実施例を示す小形トランスの縦断側
面図、第５図〜第７図は小形トランスの従来例を示し、
第５図は第７図上のＡ−Ａ線断面図、第６図は第７図上
のＢ−Ｂ線断面図、第７図は上記トランスの底面図であ
る。
１．２・・・Ｅ形コア
３・・・ボビン
４・・・コイル
５・・・接続端子
６・・・エポキシ系樹脂膜
第１図
第２図 第３図
第５図 第６図
第７図Fig. 1 is a perspective view of a small transformer according to the present invention seen from the lower side, Fig. 2 is a vertical side view of the transformer, and Fig.
4 and 4 are longitudinal sectional side views of a small transformer showing other embodiments, and FIGS. 5 to 7 show conventional examples of small transformers,
5 is a sectional view taken along the line AA in FIG. 7, FIG. 6 is a sectional view taken along the line BB in FIG. 7, and FIG. 7 is a bottom view of the transformer. 1.2...E-shaped core 3...Bobbin 4...Coil 5...Connection terminal 6...Epoxy resin film Figure 1 Figure 2 Figure 3 Figure 5 Figure 6 Figure 7 figure
Claims (4)
品外面に付着した後に加熱処理し、小形電気巻線部品の
外表面全体または一部を除く外表面を熱硬化性樹脂膜で
被覆してなる小形電気巻線部品の補強被膜。(1) After attaching electrically insulating thermosetting resin powder to the outer surface of the small electrical winding component, heat treatment is performed, and the entire outer surface or the outer surface of the small electrical winding component except for a portion is coated with a thermosetting resin film. A reinforcing coating for small electrical winding parts.
って小形電気巻線部品の外表面に電気絶縁性の熱硬化性
樹脂粉末を付着させる工程と、付着させた熱硬化性樹脂
粉末を加熱処理手段によって融着させる工程とをもって
小形電気巻線部品の外表面全体または一部を除く外表面
を熱硬化性樹脂膜で被覆する補強被膜の生産方法。(2) A process of attaching electrically insulating thermosetting resin powder to the outer surface of the small electrical winding component by electrostatic coating or immersion flow coating, and heating the attached thermosetting resin powder. 1. A method for producing a reinforcing coating, which comprises coating the entire or all but a portion of the outer surface of a small electrical winding component with a thermosetting resin film, including the step of fusing with a processing means.
分に熱硬化性樹脂粉末を吹き付ける工程を含む特許請求
の範囲第（２）項に記載した補強被膜の生産方法。(3) The method for producing a reinforcing coating as set forth in claim (2), which includes the step of spraying thermosetting resin powder onto the root portion of the connection terminal protruding from the small electrical winding component.
とした特許請求の範囲第（１）項、第（２）項記載の補
強被膜とその生産方法。(4) A reinforcing coating and a method for producing the same according to claims (1) and (2), in which the thermosetting resin powder described above is an epoxy resin powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61032804A JPS62193108A (en) | 1986-02-19 | 1986-02-19 | Reinforcing film of small-sized electric winding part and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61032804A JPS62193108A (en) | 1986-02-19 | 1986-02-19 | Reinforcing film of small-sized electric winding part and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62193108A true JPS62193108A (en) | 1987-08-25 |
Family
ID=12369026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61032804A Pending JPS62193108A (en) | 1986-02-19 | 1986-02-19 | Reinforcing film of small-sized electric winding part and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62193108A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021052028A (en) * | 2019-09-20 | 2021-04-01 | 株式会社タムラ製作所 | Coil device and manufacturing method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5935417A (en) * | 1982-08-23 | 1984-02-27 | 松下電器産業株式会社 | Method of producing composite electronic part |
-
1986
- 1986-02-19 JP JP61032804A patent/JPS62193108A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5935417A (en) * | 1982-08-23 | 1984-02-27 | 松下電器産業株式会社 | Method of producing composite electronic part |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021052028A (en) * | 2019-09-20 | 2021-04-01 | 株式会社タムラ製作所 | Coil device and manufacturing method thereof |
| JP2022166332A (en) * | 2019-09-20 | 2022-11-01 | 株式会社タムラ製作所 | Coil device |
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