JPH0555507U - Thin coil - Google Patents
Thin coilInfo
- Publication number
- JPH0555507U JPH0555507U JP11194191U JP11194191U JPH0555507U JP H0555507 U JPH0555507 U JP H0555507U JP 11194191 U JP11194191 U JP 11194191U JP 11194191 U JP11194191 U JP 11194191U JP H0555507 U JPH0555507 U JP H0555507U
- Authority
- JP
- Japan
- Prior art keywords
- copper foil
- electrode terminals
- thin coil
- etched
- insulating layer
- 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.)
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- Windings For Motors And Generators (AREA)
Abstract
(57)【要約】
【目的】絶縁層を有する銅箔を巻回しこれを切断してな
る薄型コイルにおいて、銅箔に固着された電極端子８，
９が、隣接した銅箔層間の短絡をなくすためのエッチン
グ処理工程においてエッチング処理されにくいようにし
た薄型コイル１を提供する。
【構成】銅箔に固着される電極端子８，９の材質を銅箔
よりエッチング処理されにくい材質としたことを特徴と
する薄型コイル１。
(57) [Abstract] [Purpose] In a thin coil formed by winding and cutting a copper foil having an insulating layer, electrode terminals 8 fixed to the copper foil,
9 provides a thin coil 1 which is difficult to be etched in an etching process for eliminating a short circuit between adjacent copper foil layers. [Structure] A thin coil 1 characterized in that the material of the electrode terminals 8 and 9 fixed to the copper foil is a material that is less likely to be etched than the copper foil.
Description
【０００１】[0001]
本考案は、例えば、面対向型モータなどに適用可能な薄型コイルに関する。 The present invention relates to a thin coil applicable to, for example, a face-to-face motor.
【０００２】[0002]
例えば、面対向型モータは扁平化が可能であることを特徴としているが、より 一層扁平化するために駆動コイルの薄型化が要求される。このような要求に答え ることができる薄型コイルとして、銅箔と絶縁層を有する積層体を所定回数巻回 して巻回体を得、この巻回体を所定の厚さに切断してなる薄型コイルが知られて いる。図３はこのような薄型コイルの製造工程を概略的に示すもので、（ａ）に 示すように、銅箔を材料としてその表面に絶縁層を形成してなる積層体１６の一 側縁部を巻芯１５に仮固定し、上記積層体１６に接着剤を塗布したあと巻芯１５ に所定回数巻回して巻回体を得、積層体１６の層間が完全に接着されたあと巻芯 １５を抜き取り、次に、（ｂ）に示すように、上記巻回体を所定の厚さに輪切り 状に切断にして多数の薄型コイル１７を得るようになっている。 For example, the face-to-face motor is characterized in that it can be flattened, but a thinner drive coil is required for further flattening. As a thin coil that can meet such demands, a laminated body having a copper foil and an insulating layer is wound a predetermined number of times to obtain a wound body, and the wound body is cut into a predetermined thickness. Thin coils are known. FIG. 3 schematically shows a manufacturing process of such a thin coil. As shown in (a), one side edge portion of a laminated body 16 in which a copper foil is used as a material and an insulating layer is formed on the surface thereof. Is temporarily fixed to the core 15, the adhesive is applied to the laminated body 16 and then wound around the core 15 a predetermined number of times to obtain a wound body, and after the layers of the laminated body 16 are completely adhered, the core 15 And then, as shown in (b), the wound body is cut into a predetermined thickness in a ring shape to obtain a large number of thin coils 17.
【０００３】 上記のようにして得られる薄型コイルは、その巻初めと巻終りをリードフレー ム等のリード部に電気的に接続するために、巻初めと巻終りに電極が接続される 。このような例として特開昭６３−１３３０５号公報記載のものがある。巻初め と巻終りに電極を接続するには、銅箔と絶縁層を有する積層体の両端縁部に予め 電極端子となるべき部材を固定しておき、上記積層体を巻回して得た巻回体を切 断して薄型コイルとするとき、上記電極端子となるべき材料も同時に切断する方 法が用いられる。In the thin coil obtained as described above, electrodes are connected at the beginning and end of winding in order to electrically connect the beginning and end of the winding to the lead portion such as the lead frame. As such an example, there is one described in JP-A-63-13305. To connect electrodes at the beginning and end of winding, the members to be electrode terminals are fixed in advance to both end edges of the laminate having the copper foil and the insulating layer, and the laminate obtained is wound. When cutting the revolving body into a thin coil, a method is also used in which the material to be the electrode terminal is also cut at the same time.
【０００４】[0004]
銅箔と絶縁層を有する積層体が所定回数巻回されてなる巻回体を所定の厚さに 切断することによって得られる薄型コイルは、切断面に生じる銅箔のだれやバリ 等によって、隣接した銅箔層間が電気的に短絡する。そこで、切断工程の後にエ ッチング処理工程を設けて銅箔のだれやバリ等を除去している。ところが、エッ チング処理の際に電極端子も同時にエッチング処理されてしまい、リード部との 半田づけ等による接続ができなくなることがあった。このような不具合を避ける ために、電極端子をレジスト等で覆ってエッチング処理することが考えられるが 、そうすると、後工程でレジストを剥離する必要があり、工程が複雑になる。 A thin coil obtained by cutting a wound body, which is obtained by winding a laminated body having a copper foil and an insulating layer a predetermined number of times, to a predetermined thickness, may cause adjacent coils due to dripping or burr of the copper foil generated on the cut surface. The copper foil layers are electrically short-circuited. Therefore, an etching process is provided after the cutting process to remove the drips and burrs of the copper foil. However, during the etching process, the electrode terminals were also etched at the same time, which sometimes made it impossible to connect to the lead portion by soldering or the like. In order to avoid such a problem, it is conceivable to cover the electrode terminals with a resist or the like and perform the etching process, but in that case, it is necessary to remove the resist in a subsequent process, which complicates the process.
【０００５】 本考案は、このような従来技術の問題点を解消するためになされたもので、絶 縁層を有する銅箔を巻回しこれを切断してなる薄型コイルにおいて、銅箔に固着 された電極端子が、隣接した銅箔層間の短絡をなくすためのエッチング処理工程 においてエッチング処理されにくいようにした薄型コイルを提供することを目的 とする。The present invention has been made in order to solve the above problems of the prior art, and in a thin coil formed by winding and cutting a copper foil having an insulating layer, the thin coil is fixed to the copper foil. Another object of the present invention is to provide a thin coil in which the electrode terminal is hard to be etched in the etching process for eliminating a short circuit between adjacent copper foil layers.
【０００６】[0006]
上記目的を達成するために本考案は、導体箔と絶縁層を有する積層体が所定回 数巻回されてなる巻回体を所定の厚さに切断することによって形成される薄型コ イルにおいて、銅箔に固着される電極端子の材質を銅箔よりエッチング処理され にくい材質としたことを特徴とする。 In order to achieve the above object, the present invention provides a thin coil formed by cutting a wound body, which is obtained by winding a laminated body having a conductor foil and an insulating layer a predetermined number of times, to a predetermined thickness. It is characterized in that the material of the electrode terminal fixed to the copper foil is a material that is less likely to be etched than the copper foil.
【０００７】[0007]
銅箔と絶縁層を有する積層体が所定回数巻回されてなる巻回体を所定の厚さに 切断した後、切断面に生じる銅箔のだれやバリ等をエッチング処理工程で除去し ても、銅箔よりエッチング処理されにくい材質でなる電極端子はエッチング処理 されにくく、この電極端子をリード部に接続するのに何の支障もない。 Even after cutting a wound body obtained by winding a laminate having a copper foil and an insulating layer a predetermined number of times to a predetermined thickness, the dripping and burrs of the copper foil generated on the cut surface are removed by an etching process. The electrode terminal made of a material that is less likely to be etched than the copper foil is not easily etched, and there is no problem in connecting the electrode terminal to the lead portion.
【０００８】[0008]
以下、図１、図２を参照しながら本考案にかかる薄型コイルの実施例について 説明する。 図２において、符号１０は積層体を示している。積層体１０は、銅箔１１と、 この銅箔１１の片面に形成された絶縁層１２を有してなる。積層体１０の一端縁 部の銅箔１１面側には平坦な板状の電極端子８が固着され、積層体１０の他方の 端縁部の絶縁層１２面側には平坦な板状の電極端子９が固着されている。電極端 子８，９の材質として、従来は銅箔と同じ銅を使用しているため、前述のように エッチング処理工程において銅箔と共にエッチングされてしまう。銅エッチング 液として、通常、塩化第二鉄が使用される。そこで、本実施例では、銅よりエッ チング処理されにくい材質の電極端子８，９を用いる。 An embodiment of a thin coil according to the present invention will be described below with reference to FIGS. 1 and 2. In FIG. 2, reference numeral 10 indicates a laminated body. The laminated body 10 has a copper foil 11 and an insulating layer 12 formed on one surface of the copper foil 11. A flat plate-shaped electrode terminal 8 is fixed to the copper foil 11 side of one end edge of the laminate 10, and a flat plate-shaped electrode is attached to the insulating layer 12 side of the other end edge of the laminate 10. The terminal 9 is fixed. Conventionally, the same copper as the copper foil is used as the material for the electrode terminals 8 and 9, so that it is etched together with the copper foil in the etching process as described above. Ferric chloride is usually used as the copper etching solution. Therefore, in this embodiment, the electrode terminals 8 and 9 made of a material that is less likely to be etched than copper are used.
【０００９】 銅よりエッチング処理されにくい材質として、単体金属では、銅よりイオン化 傾向の小さい、金や銀、白金等があり、これらを電極端子８，９として用いると よい。また、半田や錫なども比較的塩化第二鉄に強く、銅よりもエッチング処理 されにくいので、これらの材質を用いてもよい。As a material that is less likely to be etched than copper, there are gold, silver, platinum, and the like, which have a smaller ionization tendency than copper as a single metal, and these are preferably used as the electrode terminals 8 and 9. Further, solder and tin are relatively strong against ferric chloride and are less likely to be etched than copper, so these materials may be used.
【００１０】 積層体１０に電極端子８，９を固着する手段としては、半田付け、レーザ溶接 、超音波溶接等を用いることができる。積層体１０を構成する銅箔１１に対して 電極端子８，９が電気的に導通している必要がある。従って、絶縁層１２側から 銅箔１１に電極端子９を固着しようとするときは絶縁層１２の存在が問題となる 。しかし、上記のような固着手段を用いれば、絶縁層１２を溶解しあるいは突き 破って電極端子９を銅箔１１に固着することができるので、電極端子８，９の固 着は容易である。また、完成した薄型コイルはその電極端子８，９をリード部に 半田付けすることによって接続するが、銅箔１１に対する電極端子８，９の接続 を半田付けで行った場合は、リード部との接続時に電極端子８，９が銅箔１１か ら脱落する可能性がある。従って、銅箔１１に対する電極端子８，９の固着は溶 接によるのが望ましい。銅箔１１に対する電極端子８，９の固着を半田付けで行 う場合は、高温半田を用い、リード部との半田付け時に銅箔１１と電極端子８， ９との間の半田がとけないようにするとよい。As means for fixing the electrode terminals 8 and 9 to the laminated body 10, soldering, laser welding, ultrasonic welding or the like can be used. It is necessary that the electrode terminals 8 and 9 are electrically connected to the copper foil 11 forming the laminated body 10. Therefore, when trying to fix the electrode terminal 9 to the copper foil 11 from the insulating layer 12 side, the existence of the insulating layer 12 becomes a problem. However, if the above-mentioned fixing means is used, the electrode terminal 9 can be fixed to the copper foil 11 by melting or breaking through the insulating layer 12, so that the electrode terminals 8 and 9 can be fixed easily. In addition, the completed thin coil is connected by soldering its electrode terminals 8 and 9 to the lead portions. However, when the electrode terminals 8 and 9 are connected to the copper foil 11 by soldering, they are connected to the lead portions. The electrode terminals 8 and 9 may fall off from the copper foil 11 during connection. Therefore, it is desirable to fix the electrode terminals 8 and 9 to the copper foil 11 by welding. When fixing the electrode terminals 8 and 9 to the copper foil 11 by soldering, use high-temperature solder so that the soldering between the copper foil 11 and the electrode terminals 8 and 9 does not occur when soldering to the lead part. It is good to set.
【００１１】 このようにして、銅箔１１と絶縁層１２を有してなる積層体１０は、図３（ａ ）について説明したように、所定回数巻回されて巻回体が形成される。巻回体の 内周面側と外周面側にそれぞれ電極端子８，９が露呈している。電極端子８，９ の何れが内周側で何れが外周側であるかは特に限定されないが、図１に示す実施 例では、電極端子８が内周側、電極端子９が外周側に位置している。上記巻回体 は図３（ｂ）について説明したように、切断工程で所定の厚さに切断することに より、図１に示すような薄型コイル１とされる。上記切断工程では電極端子８， ９も同時に切断され、薄型コイル１の内周側に電極端子８が露呈し、外周側に電 極端子９が露呈している。In this way, the laminated body 10 having the copper foil 11 and the insulating layer 12 is wound a predetermined number of times to form a wound body, as described with reference to FIG. Electrode terminals 8 and 9 are exposed on the inner peripheral surface side and the outer peripheral surface side of the wound body, respectively. It is not particularly limited which of the electrode terminals 8 and 9 is the inner peripheral side and which is the outer peripheral side, but in the embodiment shown in FIG. 1, the electrode terminal 8 is located on the inner peripheral side and the electrode terminal 9 is located on the outer peripheral side. ing. As described with reference to FIG. 3 (b), the wound body is cut into a predetermined thickness in the cutting step to form the thin coil 1 as shown in FIG. In the above cutting step, the electrode terminals 8 and 9 are also cut at the same time, so that the electrode terminals 8 are exposed on the inner peripheral side of the thin coil 1 and the electrode terminals 9 are exposed on the outer peripheral side.
【００１２】 上記切断工程を経た薄型コイル１は、前述のようにエッチング処理工程におい てエッチング処理され、銅箔１１のだれやバリ等を除去して、隣接した銅箔１１ の層間の電気的な短絡をなくす。エッチング処理時に電極端子８，９も露出して いて、これらの端子８，９もエッチング液にさらされるが、電極端子８，９は銅 箔よりエッチング処理されにくい材質で作られているため、電極端子８，９がエ ッチング処理されることはなく、エッチング処理されたとしても処理量は僅かで あり、電極端子８，９が脱落するというような問題は生じない。The thin coil 1 that has undergone the above cutting process is subjected to the etching process in the etching process as described above to remove the sagging, burrs and the like of the copper foil 11 to electrically connect the adjacent copper foils 11 with each other. Eliminate short circuits. The electrode terminals 8 and 9 are also exposed during the etching process, and these terminals 8 and 9 are also exposed to the etching solution. However, since the electrode terminals 8 and 9 are made of a material that is less likely to be etched than copper foil, The terminals 8 and 9 are not etched, and even if they are etched, the amount of processing is small, and the problem that the electrode terminals 8 and 9 fall off does not occur.
【００１３】 このように、上記実施例によれば、銅箔１１と絶縁層１２を有する積層体１０ が所定回数巻回されてなる巻回体を所定の厚さに切断することによって得られる 薄型コイル１において、銅箔１１に固着される電極端子８，９の材質を銅箔１１ よりエッチング処理されにくい材質としたため、銅箔１１のだれやバリ等を除去 して隣接した銅箔１１の層間の電気的な短絡をなくすためのエッチング処理を行 っても、電極端子８，９がエッチング処理されることはなく、エッチング処理さ れたとしても処理量は僅かであり、電極端子８，９が脱落するというような問題 は生じない。As described above, according to the above-mentioned embodiment, the thin body obtained by cutting the wound body obtained by winding the laminated body 10 having the copper foil 11 and the insulating layer 12 a predetermined number of times into a predetermined thickness. In the coil 1, since the material of the electrode terminals 8 and 9 fixed to the copper foil 11 is a material that is less likely to be etched than the copper foil 11, it is possible to remove the drips and burrs of the copper foil 11 so that the layers between the adjacent copper foils 11 are removed. The electrode terminals 8 and 9 are not etched even if the etching process is performed to eliminate the electrical short circuit of the electrode terminals. Even if the etching process is performed, the processing amount is small. Does not occur.
【００１４】 また、電極端子８，９のエッチングを防止するためにこれをレジストで覆う必 要もないので、後工程でレジストを除去するというような面倒な工程も不要であ る。さらに、電極端子８，９の材質が銅箔１１よりエッチング処理されにくい材 質であるということは、エッチング液に対して銅箔１１よりもイオン化傾向の小 さい材質であるということであり、銅箔１１よりも酸化されにくいということで あるから、電極端子８，９をリード部に半田付け等で接続するとき、接続不良が 生じにくいという利点もある。Further, since it is not necessary to cover the electrode terminals 8 and 9 with a resist in order to prevent the etching, the troublesome step of removing the resist in a later step is also unnecessary. Furthermore, the fact that the material of the electrode terminals 8 and 9 is less likely to be etched than the copper foil 11 means that the material has a smaller ionization tendency than the copper foil 11 with respect to the etching solution. Since it is less likely to be oxidized than the foil 11, there is also an advantage that connection failure is less likely to occur when the electrode terminals 8 and 9 are connected to the lead portions by soldering or the like.
【００１５】[0015]
本考案によれば、銅箔と絶縁層を有する積層体が所定回数巻回されてなる巻回 体を所定の厚さに切断することによって得られる薄型コイルにおいて、銅箔に固 着される電極端子の材質を銅箔よりエッチング処理されにくい材質としたため、 銅箔のだれやバリ等を除去して隣接した銅箔の層間の電気的な短絡をなくすため のエッチング処理を行っても、電極端子がエッチング処理されることはなく、エ ッチング処理されたとしても処理量は僅かであり、電極端子の脱落とか、電極端 子とリード部との接続不良の問題は生じない。 According to the present invention, in a thin coil obtained by cutting a wound body obtained by winding a laminate having a copper foil and an insulating layer a predetermined number of times to a predetermined thickness, an electrode fixed to the copper foil. Since the material of the terminal is less likely to be etched than the copper foil, the electrode terminal can be used even if etching is performed to remove sagging and burrs on the copper foil to eliminate electrical short circuits between adjacent copper foil layers. Is not subjected to etching treatment, and the amount of treatment is small even if it is subjected to etching treatment, and there is no problem of electrode terminal dropping or poor connection between the electrode terminal and the lead portion.
【図１】本考案にかかる薄型コイルの実施例を示す斜視
図。FIG. 1 is a perspective view showing an embodiment of a thin coil according to the present invention.
【図２】同上薄型コイルを得るための積層体の例を示す
斜視図。FIG. 2 is a perspective view showing an example of a laminated body for obtaining the same thin coil.
【図３】従来知られている薄型コイルの製造方法の例を
示す斜視図。FIG. 3 is a perspective view showing an example of a conventionally known method for manufacturing a thin coil.
１ 薄型コイル ８ 電極端子 ９ 電極端子 １０ 積層体 １１ 銅箔 １２ 絶縁層 1 Thin coil 8 Electrode terminal 9 Electrode terminal 10 Laminated body 11 Copper foil 12 Insulation layer
───────────────────────────────────────────────────── フロントページの続き (72)考案者 竹村 政夫 長野県駒ヶ根市赤穂14−888番地 株式会 社三協精機製作所駒ヶ根工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masao Takemura 14-888 Ako, Komagane-shi, Nagano Stock company Sankyo Seiki Seisakusho Komagane factory
Claims (1)
巻回されてなる巻回体を所定の厚さに切断することによ
って得られる薄型コイルにおいて、上記銅箔に固着され
る電極端子の材質を上記銅箔よりエッチング処理されに
くい材質としたことを特徴とする薄型コイル。1. A thin coil obtained by cutting a wound body obtained by winding a laminate having a copper foil and an insulating layer a predetermined number of times into a predetermined thickness, and an electrode terminal fixed to the copper foil. The thin coil is characterized in that the material of is less likely to be etched than the copper foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991111941U JP2507391Y2 (en) | 1991-12-24 | 1991-12-24 | Thin coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991111941U JP2507391Y2 (en) | 1991-12-24 | 1991-12-24 | Thin coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0555507U true JPH0555507U (en) | 1993-07-23 |
| JP2507391Y2 JP2507391Y2 (en) | 1996-08-14 |
Family
ID=14573985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991111941U Expired - Fee Related JP2507391Y2 (en) | 1991-12-24 | 1991-12-24 | Thin coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2507391Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008277864A (en) * | 2008-08-04 | 2008-11-13 | Panasonic Corp | Method for manufacturing electronic component |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62124707A (en) * | 1985-11-26 | 1987-06-06 | Mitsubishi Electric Corp | Water cooled winding for electromagnetic stirrer |
| JPS63213327A (en) * | 1987-02-28 | 1988-09-06 | Sony Chem Corp | Flat coil |
-
1991
- 1991-12-24 JP JP1991111941U patent/JP2507391Y2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62124707A (en) * | 1985-11-26 | 1987-06-06 | Mitsubishi Electric Corp | Water cooled winding for electromagnetic stirrer |
| JPS63213327A (en) * | 1987-02-28 | 1988-09-06 | Sony Chem Corp | Flat coil |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008277864A (en) * | 2008-08-04 | 2008-11-13 | Panasonic Corp | Method for manufacturing electronic component |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2507391Y2 (en) | 1996-08-14 |
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