JPH097852A - Winding for transformer use and winding thereof - Google Patents
Winding for transformer use and winding thereofInfo
- Publication number
- JPH097852A JPH097852A JP7153516A JP15351695A JPH097852A JP H097852 A JPH097852 A JP H097852A JP 7153516 A JP7153516 A JP 7153516A JP 15351695 A JP15351695 A JP 15351695A JP H097852 A JPH097852 A JP H097852A
- Authority
- JP
- Japan
- Prior art keywords
- winding
- conductor
- stepwise
- stage
- turn
- 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.)
- Granted
Links
Landscapes
- Coil Winding Methods And Apparatuses (AREA)
- Coils Of Transformers For General Uses (AREA)
- Insulating Of Coils (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、変圧器に使用される巻
線に係り、特に巻線の自動化をより簡素化するのに好適
な巻線とその巻線方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding used in a transformer, and more particularly to a winding suitable for simplifying automation of the winding and a winding method therefor.
【０００２】[0002]
【従来の技術】従来のこの種の巻線にあっては、例えば
特開昭６３−７２１０６号公報（以下、第一の従来技術
と云う），特開平７−１５８５４号公報（以下、第二の
従来技術と云う）に開示されたものがある。2. Description of the Related Art In this type of conventional winding, for example, JP-A-63-72106 (hereinafter referred to as the first prior art) and JP-A-7-15854 (hereinafter referred to as the second prior art) Of the prior art)).
【０００３】第一の従来技術のものは、図１７に示すよ
うに、巻型ａの外周上に巻線導体ｂを軸方向に沿って巻
線した後、その外周に絶縁材ｃを巻き、次いで、その絶
縁材ｃの上に巻線導体ｂを巻戻して巻線し、さらにその
外周に再び絶縁材ｃを巻き、その上に巻線導体ｂを軸方
向に巻線することにより、所定段からなる一つの巻線が
形成される。そして、その巻線と同様にして別の巻線を
形成し、これら任意の個数の巻線を軸方向に直列に接続
することにより、変圧器巻線を構成するようにしてい
る。なお図１７において、符号ｄは外周絶縁層である。In the first prior art, as shown in FIG. 17, after winding a winding conductor b along the axial direction on the outer circumference of a winding form a, an insulating material c is wound around the outer circumference thereof. Next, the winding conductor b is rewound and wound on the insulating material c, the insulating material c is wound again on the outer periphery thereof, and the winding conductor b is axially wound on the insulating material c. One winding of stages is formed. Then, another winding is formed in the same manner as that winding, and an arbitrary number of these windings are connected in series in the axial direction to form a transformer winding. In FIG. 17, reference numeral d is an outer peripheral insulating layer.
【０００４】一方、第二の従来技術のものは、巻線導体
の巻始めと巻終わりとの間の途中位置において、コアの
外周に対し、巻始めの先端の巻線導体を軸方向に巻進め
ながら、かつ最上段から最下段に至るに従い各段毎に順
次巻下げる階段状の巻下げ部を形成することと、巻線導
体を軸方向に巻戻しながら、かつ巻下げ部に隣接する最
下段から最上段に至るに従い各段毎に順次巻上げる階段
状の巻上げ部を形成することとを順次繰り返し、階段状
の途中部分を形成し、これにより、互いに隣り合う巻線
導体間の端子間電圧が大きくなるのを抑えるようにして
いる。On the other hand, in the second prior art, the winding conductor at the tip of the winding start is axially wound around the outer periphery of the core at an intermediate position between the winding start and the winding end of the winding conductor. While advancing, and forming a stepwise unwinding part for sequentially winding each step from the top to the bottom, while winding the winding conductor in the axial direction and adjoining the unwinding part. Forming a stepwise winding part that sequentially winds each step from the lower stage to the uppermost stage is repeated to form a stepwise intermediate portion. We are trying to suppress the increase in voltage.
【０００５】[0005]
【発明が解決しようとする課題】ところで、上記に示す
従来技術では以下の点について配慮されていない。即
ち、第一の従来技術のものは、変圧機巻線を製作する過
程において、巻線導体ｂとその上の段の巻線導体ｂとの
間に絶縁材ｃをいちいち用いなければならないので、絶
縁材ｃの挿入作業を必要とし、生産性に問題がある。ま
た、これを解消するため、巻線導体ｂの被覆に絶縁強度
の大きいものを使用すると、被覆がそれだけ厚くなるの
で、巻線導体ｂの放熱性が低下したり、変圧器巻線全体
の寸法が大きくなる問題がある。By the way, in the above-mentioned prior art, the following points are not taken into consideration. That is, in the first prior art, since the insulating material c has to be used between the winding conductor b and the winding conductor b of the upper stage in the process of manufacturing the transformer winding, Since the work of inserting the insulating material c is required, there is a problem in productivity. In order to solve this problem, if the winding conductor b is coated with a large insulation strength, the coating becomes thicker, which reduces the heat dissipation of the winding conductor b and reduces the size of the entire transformer winding. There is a problem that becomes large.
【０００６】さらに、任意の個数の巻線を軸方向に直列
に接続すると、端子間電圧が大きくなるのをある程度抑
えることができ、即ち、隣接する巻線導体ｂ間の電位差
が大きくなるのを避けることができるものの、これで巻
線単位間にスペースが必要となる問題もある。この問題
を解消しようとすると、巻線導体ｂの積層段数を増加さ
せることも考えられるが、そのような場合には巻線導体
の放熱性が低下する問題がある。Further, by connecting an arbitrary number of windings in series in the axial direction, it is possible to suppress the increase in the terminal voltage to some extent, that is, to increase the potential difference between the adjacent winding conductors b. This can be avoided, but there is also the problem that this requires space between winding units. In order to solve this problem, the number of stacked layers of the winding conductor b may be increased, but in such a case, there is a problem that the heat dissipation of the winding conductor is deteriorated.
【０００７】また、第二の従来技術のものは、第一の従
来技術に比較し、巻線導体が絶縁材を用いることなく巻
線されているので、また巻線が互いに直列に接続するこ
とがないので、絶縁材やスペースに関する問題を解消し
得るばかりでなく、端子間電圧をより抑えることができ
る利点がある。Further, in the second prior art, as compared with the first prior art, since the winding conductor is wound without using an insulating material, the windings should be connected in series with each other. Since there is no such problem, not only the problems concerning the insulating material and the space can be solved, but also the voltage between terminals can be further suppressed.
【０００８】しかしながら、この第二の従来技術では、
巻線導体の巻線時、巻線導体に巻崩れが起こることにつ
いて配慮されていない。即ち、巻線導体の巻始め部分，
巻終わり部分は勿論のこと、特に巻始め部分と巻終わり
部分との間にある途中部分が最下段，最上段間で全て階
段上に巻線されているので、その階段状の巻線導体上に
１ターンずつ巻線導体を巻線しようとすると、巻線導体
の巻崩れが起こるおそれがある。また例えうまく巻線で
きたとしても、１ターン毎の巻線導体が不安定な状態と
なるので、巻線終了したコイルそのものを取り扱うとき
に巻線導体がばらけてしまう等の問題もある。また、第
二の従来技術では、端子間電圧をより抑えるものである
ものの、その端子間電圧を抑えながら、巻線作業を如何
にして能率的に行うことができるかについて配慮されて
いない問題がある。However, in this second conventional technique,
When winding the winding conductor, no consideration is given to occurrence of collapse of the winding conductor. That is, the winding start portion of the winding conductor,
Not only the end-of-winding part, but especially the middle part between the beginning-of-winding part and the end-of-winding part is all wound on the stairs between the lowermost stage and the uppermost stage. If it is attempted to wind the winding conductor one turn at a time, the winding conductor may collapse. Further, even if the winding can be performed successfully, the winding conductor for each turn is in an unstable state, so that there is a problem that the winding conductor is scattered when the coil itself after winding is handled. Further, in the second conventional technique, although the voltage between terminals is further suppressed, there is a problem that no consideration is given to how the winding work can be efficiently performed while suppressing the voltage between terminals. is there.
【０００９】本発明の目的は、前記従来技術の問題点に
鑑み、端子間電圧を極力抑えることができるのは勿論の
他、巻線時、巻線導体に巻崩れが起こるのを確実に防止
し得る変圧器用巻線を提供することにあり、また他の目
的は、端子間電圧を極力抑えつつ、巻線作業のより簡素
化を図り得る変圧器用巻線を提供することにある。そし
て、またさらなる目的は、上記変圧器用巻線を的確に製
造し得る変圧器用巻線の巻線方法を提供することにあ
る。In view of the above-mentioned problems of the prior art, the object of the present invention is not only to suppress the voltage between terminals as much as possible, but to surely prevent the winding conductor from collapsing during winding. Another object of the present invention is to provide a transformer winding capable of further simplifying the winding work while suppressing the terminal voltage as much as possible. And a still further object is to provide a winding method for a transformer winding, which can manufacture the above transformer winding accurately.
【００１０】[0010]
【課題を解決するための手段】本発明においては、巻型
の外周上の一端部に巻線導体の巻線により所定の段層に
積み重ねられ、かつ階段状をなす巻始め部分を形成し、
その巻始め部分と巻型の外周上の他端部に形成される巻
終わり部分との間に、巻線導体を軸方向に巻進めなが
ら、かつ最上段から最下段に至るに従い各段毎に順次巻
下げる階段状の巻下げ部を形成することと、巻線導体を
軸方向に巻戻しながら、かつ巻下げ部に隣接する最下段
から最上段に至るに従い各段毎に順次巻上げる階段状の
巻上げ部を形成することとを順次繰り返し、階段状の途
中部分を形成する変圧器用巻線であって、前記巻線導体
を、接着性を有する絶縁材で被覆してあることを特徴と
するものである。According to the present invention, a winding start portion having a stepped shape is formed at one end portion on the outer periphery of a winding die, which is stacked in a predetermined step layer by a winding of a winding conductor,
While winding the winding conductor in the axial direction between the winding start portion and the winding end portion formed on the other end on the outer periphery of the winding form, each step is performed from the uppermost stage to the lowermost stage. Forming a stepwise winding-down part so that the winding conductor is unwound in the axial direction, and the winding conductor is sequentially wound up from the bottom to the top next to the winding-up part. A winding wire for a transformer, in which the winding conductor is sequentially repeated to form a stepwise intermediate portion, and the winding conductor is covered with an insulating material having adhesiveness. It is a thing.
【００１１】また、本発明では、前記巻線導体が断面方
形をなすことを特徴とするものである。さらに、本発明
では、巻線導体の階段状の巻始め部分と巻終わり部分と
のうち、少なくとも巻始め部分の位置に該巻始め部分と
対応する形状の絶縁性のスペーサを有することを特徴と
するものである。Further, the present invention is characterized in that the winding conductor has a rectangular cross section. Further, according to the present invention, of the stepwise winding start portion and the winding end portion of the winding conductor, at least the winding start portion has an insulating spacer having a shape corresponding to the winding start portion. To do.
【００１２】そして、本発明方法では、外周が接着性を
有する絶縁材で被覆された巻線導体を用い、この巻線導
体を、巻型の外周上に巻線して階段状の巻始め部分を形
成し、次いで、階段状の巻始め部分に沿い該巻始め部分
の巻線導体を軸方向に巻進めながら、かつ最上段から最
下段に至るに従い各段毎に順次巻下げる階段状の巻下げ
部を形成し、その後、該巻下げ部の先端の巻線導体を軸
方向に巻戻しながら、かつ巻下げ部に隣接する最下段か
ら最上段に至るに従い各段毎に順次巻上げて階段状の巻
上げ部を形成し、以下、階段状の巻下げ部の形成と階段
状の巻上げ部の形成とを順次繰り返して巻線の途中部分
を形成し、該途中部分の先端の巻線を所望形状に形成し
て巻終わりを形成することを特徴とするものである。In the method of the present invention, a winding conductor whose outer circumference is covered with an insulating material having adhesiveness is used, and the winding conductor is wound on the outer circumference of the winding form to form a stepwise winding start portion. Then, while winding the winding conductor of the winding start portion in the axial direction along the winding start portion of the stepwise shape, and sequentially winding each step from the uppermost stage to the lowermost stage. After forming the lowering portion, the winding conductor at the tip of the lowering portion is unwound in the axial direction, and the winding conductors are sequentially wound up step by step from the lowermost stage adjacent to the lowering portion to the uppermost stage. The winding portion is formed, and thereafter, the formation of the stepwise winding portion and the formation of the stepwise winding portion are sequentially repeated to form an intermediate portion of the winding, and the winding at the tip of the intermediate portion is formed into a desired shape. It is characterized in that the winding end is formed.
【００１３】[0013]
【作用】本発明の変圧器用巻線では、上述の如く、巻型
の外周上の一端部の巻始め部分と他端部に形成される巻
終わり部分との間に、巻線導体を軸方向に巻進めなが
ら、かつ最上段から最下段に至るに従い各段毎に順次巻
下げる階段状の巻下げ部を形成することと、巻線導体を
軸方向に巻戻しながら、かつ巻下げ部に隣接する最下段
から最上段に至るに従い各段毎に順次巻上げる階段状の
巻上げ部を形成することとを順次繰り返し、階段状の途
中部分を形成し、しかも巻線導体を、接着性を有する絶
縁材で被覆して構成したので、巻線導体とその周囲の巻
線導体間の端子間電圧を許容範囲内に確実に小さく抑え
ることができると共に、巻線導体に巻崩れが起こること
を防止できる。そのため、階段状の巻線であっても、巻
線作業の自動化を的確に行うことができ、それだけ信頼
性を高めることができる。In the transformer winding of the present invention, as described above, the winding conductor is axially provided between the winding start portion at one end and the winding end portion formed at the other end on the outer circumference of the winding form. Forming a step-like winding part that is sequentially wound from the uppermost stage to the lowermost stage while winding the winding conductor in the axial direction, and rewinding the winding conductor in the axial direction and adjoining the lowering part. The stepwise winding part is formed by sequentially winding each step from the bottom to the top, and the stepwise intermediate part is formed, and the winding conductor is insulated with adhesive property. Since it is covered with a material, the terminal voltage between the winding conductor and the surrounding winding conductor can be surely suppressed to a small value within an allowable range, and the winding conductor can be prevented from being collapsed. . Therefore, even in the case of a stepwise winding, the winding work can be accurately automated, and the reliability can be increased accordingly.
【００１４】また本発明の変圧器用巻線では、巻線導体
が断面方形をなしているので、巻線時、巻線導体がそれ
より下段の巻線導体に安定して巻線することができ、そ
のため、巻崩れ防止を確実に行うことができる。Further, in the transformer winding of the present invention, since the winding conductor has a rectangular cross section, the winding conductor can be stably wound on the winding conductor in a lower stage than the winding conductor at the time of winding. Therefore, it is possible to surely prevent the collapse of the winding.
【００１５】さらに本発明の変圧器用巻線では、少なく
とも巻形の巻始め部分の位置に該巻始め部分と対応する
形状の絶縁性のスペーサを有するので、巻線導体を階段
状の巻下がり部分から開始することができ、それだけ巻
線作業の簡素化を図ることができる。Further, in the transformer winding of the present invention, since the insulating spacer having the shape corresponding to the winding start portion is provided at least at the position of the winding start portion of the winding form, the winding conductor is stepped into the winding down portion. Therefore, the winding work can be simplified.
【００１６】そして、本発明の巻線方法では、上述の如
く、外周が接着性を有する絶縁材で被覆された巻線導体
を用い、この巻線導体を、巻型の外周上に巻線して階段
状の巻始め部分を形成し、次いで、階段状の巻始め部分
に沿い該巻始め部分の巻線導体を軸方向に巻進めなが
ら、かつ最上段から最下段に至るに従い各段毎に順次巻
下げる階段状の巻下げ部を形成し、その後、該巻下げ部
の先端の巻線導体を軸方向に巻戻しながら、かつ巻下げ
部に隣接する最下段から最上段に至るに従い各段毎に順
次巻上げて階段状の巻上げ部を形成し、以下、階段状の
巻下げ部の形成と階段状の巻上げ部の形成とを順次繰り
返して巻線の途中部分を形成し、該途中部分の先端の巻
線を所望形状に形成して巻終わりを形成するので、巻線
導体の巻線時、巻線導体に巻崩れが起こることを防止で
き、変圧器用巻線を的確に製作し得る。In the winding method of the present invention, as described above, the winding conductor whose outer periphery is covered with the insulating material having adhesiveness is used, and the winding conductor is wound on the outer periphery of the winding form. To form a stepwise winding start portion, and then winding the winding conductor of the winding start portion along the stepwise winding start portion in the axial direction, and in each step from the uppermost stage to the lowermost stage. A stepwise winding-down portion for sequentially winding is formed, and thereafter, the winding conductor at the tip of the winding-down portion is axially rewound, and each step is performed from the lowest stage adjacent to the lowering unit to the uppermost stage. Each step is sequentially wound to form a staircase-shaped winding portion, and thereafter, the formation of the staircase-shaped lowering portion and the formation of the staircase-shaped winding portion are sequentially repeated to form an intermediate portion of the winding. Since the winding at the tip is formed into the desired shape to form the winding end, when winding the winding conductor, It is possible to prevent the winding collapse occurs in the body, it may be fabricated accurately transformers windings.
【００１７】[0017]
【実施例】以下、本発明の実施例を図１乃至図１６によ
り説明する。図１は本発明方法を実施した変圧器用巻線
の要部を示し、図２及び図３本発明方法の第一の実施例
を示している。Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 shows the essential parts of a transformer winding that has been subjected to the method of the present invention, and FIGS. 2 and 3 show a first embodiment of the method of the present invention.
【００１８】変圧器用巻線１００は、図１に示すよう
に、絶縁体からなる巻型Ａの外周上に、巻線導体Ｂが軸
方向に沿ってしかも外周方向に所定の段数で巻回され、
また、巻線導体Ｂの巻回が終了すると、その最終段ＢＮ
の巻線導体Ｂが外周絶縁層Ｃにより被覆されて変圧器用
巻線１００が構成されている。そして、この変圧器用巻
線１００は、巻型Ａの外周上の一端部に巻線導体Ｂによ
り階段状をなす巻始め部分を形成すると、その巻始め部
分と巻型の外周上の他端部に形成される巻終わり部分と
の間に、階段状の途中部分が形成されている。In the transformer winding 100, as shown in FIG. 1, a winding conductor B is wound around an outer circumference of a winding form A made of an insulator along the axial direction and in a predetermined number of steps in the outer circumferential direction. ,
When the winding of the winding conductor B is completed, the final stage BN
The winding conductor B is covered with the outer peripheral insulating layer C to form the transformer winding 100. In this transformer winding 100, when a stepwise winding start portion is formed by the winding conductor B at one end on the outer circumference of the winding form A, the winding start portion and the other end on the outer circumference of the winding form are formed. A stepwise intermediate portion is formed between the winding end portion and the winding end portion.
【００１９】この変圧器用巻線１００の巻線方法につい
て具体的に述べると、例えば図２及び図３に示すよう
に、巻型Ａ上において、一段目Ｂ１として第１ターン１
〜第３ターン３を軸方向の一端から他端側に向けて順次
巻線した後、次に、二段目Ｂ２として、第２ターン２，
第１ターン１の上に第４ターン４，第５ターン５を軸方
向の一端まで順次巻戻す。The winding method of the transformer winding 100 will be specifically described. For example, as shown in FIGS. 2 and 3, on the winding form A, the first turn 1 as the first stage B1.
~ After winding the third turn 3 from one end in the axial direction to the other end in sequence, next, as the second stage B2, the second turn 2,
The fourth turn 4 and the fifth turn 5 are sequentially rewound on the first turn 1 to one end in the axial direction.
【００２０】さらに、二段目Ｂ２である第５ターン５，
第４ターン４の上に、三段目Ｂ３として第６ターン６，
第７ターン７を巻進めた後、二段目Ｂ２の第４ターン４
に隣列すると共に、一段目Ｂ１の第３ターン３の上に第
８ターン８を巻線し、次いで、一段目Ｂ１の第３ターン
３に隣列する位置に第９ターン９を巻回する。Further, the fifth turn 5, which is the second stage B2,
On turn 4, on turn 6, as the third stage B3, turn 6,
After advancing 7th turn 7, 4th turn 4 of the second stage B2
And the eighth turn 8 is wound on the third turn 3 of the first stage B1 and then the ninth turn 9 is wound at a position adjacent to the third turn 3 of the first stage B1. .
【００２１】さらにその後、第９ターン９に隣列する位
置に第１０ターン１０を巻線し、そこから第１１ターン
１１〜第１３ターン１３を矢印の如く順次各段Ｂ１〜Ｂ
４毎に巻戻しながら、かつ巻上げて階段状に形成し、第
１３ターン１３を四段目Ｂ４とする。また該第１３ター
ン１３の巻線後、その隣列する位置に第１４ターン１４
を巻戻し、次いで第１４ターン１４の上に最上段目Ｂｎ
としての第１５ターン１５を巻回する。この最上段目Ｂ
ｎの第１５ターン１５，四段目Ｂ４の第１３ターン１
３，三段目Ｂ３の第１２ターン１２，二段目Ｂ２の第１
１ターン１１，一段目Ｂ１の第１０ターン１０により、
各段が軸方向の他端側に向けて順次下がるような階段状
の巻始め部分を形成している。After that, the tenth turn 10 is wound at a position adjacent to the ninth turn 9, and the eleventh turn 11 to the thirteenth turn 13 are sequentially arranged from there to the respective stages B1 to B as shown by arrows.
While rewinding every 4 times, and winding up to form a staircase, the 13th turn 13 is the fourth step B4. After the winding of the 13th turn 13, the 14th turn 14
Rewind, and then turn top 14 Bn on top of turn 14
The 15th turn 15 is wound. This top row B
n 15th turn 15, 4th stage B4 13th turn 1
3, 12th turn 12 of 3rd stage B3, 1st of 2nd stage B2
1 turn 11, 10th turn 10 of the first stage B1,
Each step forms a stepwise winding start portion in which it gradually descends toward the other end side in the axial direction.
【００２２】しかる後、第１５ターン１５と隣列する位
置にあってかつ第１３ターン１３の上に第１６ターン１
６を巻線し、続いて該ターン１６以降は矢印の如く、一
段目の第１０ターン１０に隣列する第２０ターン２０ま
で順次階段状に巻下げて巻進めることにより、階段状の
巻下げ部Ｂｄを形成する。Then, at the position adjacent to the 15th turn 15 and on the 13th turn 13, the 16th turn 1
6 is wound, and then, from the turn 16 onward, as shown by the arrow, the stepwise winding is performed by sequentially winding and winding up to the 20th turn 20 adjacent to the 10th turn 10 of the first stage, and then proceeding. The part Bd is formed.
【００２３】続いて、第２０ターン２０と隣列する位置
に第２１ターン２１を軸方向に巻進め、そこから巻線導
体Ｂを、それまで巻線した各ターン２０，１９，１８，
１７の上に順次巻戻しながら巻上げ、第２１ターン２
１，第２２ターン２２，第２３ターン２３，第２４ター
ン２４，第２５ターン２５からなる階段状の巻上げ部Ｂ
ｕを形成する。そして、階段状の巻下げ部Ｂｄと巻上げ
部Ｂｕとを順次繰り返すことにより、階段状の途中部分
を形成している。Subsequently, the 21st turn 21 is axially wound to a position adjacent to the 20th turn 20, and the winding conductor B is wound from there to the turns 20, 19, 18,
Winding while rewinding onto 17 in turn, turn 21 2
1, a stepwise winding portion B consisting of the 22nd turn 22, the 23rd turn 23, the 24th turn 24 and the 25th turn 25
form u. Then, the stepwise winding portion Bd and the winding portion Bu are sequentially repeated to form a stepwise intermediate portion.
【００２４】また、軸方向の他端側においては、図３に
示すように、巻始め部分とほぼ逆の形態にして巻終わり
部分を形成する。従って、この巻線１００は、巻始め部
分と巻終わり部分との間の途中位置では、巻線導体Ｂを
軸方向に巻進めながら、かつ最上段ＢＮから最下段Ｂ１
に至るに従い各段毎に順次巻下げる階段状の巻下げ部Ｂ
ｄを形成することと、巻線導体Ｂを軸方向に巻戻しなが
ら、かつ最下段Ｂ１から最上段ＢＮに至るに従い各段毎
に順次巻上げる階段状の巻上げ部Ｂｕを形成することと
を繰り返している。なお図３では、巻線とてして五段８
０ターンのものを構成し、しかも軸方向の他端にあって
は巻線導体Ｂが五段にきっちり積層された例を示してい
るが、実際の変圧器用巻線１００はターン数が膨大な数
であり、例えば６７５ターンの巻線にあっては図４に示
す如き形態で巻終わり部分を形成している。On the other end side in the axial direction, as shown in FIG. 3, a winding end portion is formed in a shape almost opposite to the winding start portion. Therefore, in the winding 100, in the middle position between the winding start portion and the winding end portion, while winding the winding conductor B in the axial direction, the uppermost stage BN to the lowermost stage B1.
Stepwise unwinding part B, in which each step is sequentially unwound.
The step of forming d and the step of winding the winding conductor B in the axial direction and forming the stepwise winding part Bu which sequentially winds each step from the lowermost stage B1 to the uppermost stage BN are repeated. ing. Note that in FIG. 3, the winding has five stages 8
An example is shown in which the winding conductor B is constituted by 0 turns and the winding conductor B is exactly stacked in five stages at the other end in the axial direction. However, the actual transformer winding 100 has an enormous number of turns. For example, in the case of a winding having 675 turns, the winding end portion is formed in the form as shown in FIG.
【００２５】上述の如く、巻線導体Ｂの巻始め部分と巻
終わり部分との間の途中部分に、巻線導体Ｂの階段状の
巻下げ部Ｂｄを形成することと、巻線導体Ｂを軸方向に
巻戻しながら、かつ各段毎に順次巻上げる階段状の巻上
げ部Ｂｕを形成することとを順次繰り返し、階段状の途
中部分を形成しているので、一方のターンとこれに隣接
するターンとの間の端子間電圧を小さく抑えることがで
きる。即ち、巻線導体Ｂの巻上げと巻下げが繰り返され
る位置、例えば図２において、第２３ターンの周囲には
第２４ターン２４，第２７ターン２７，第３４ターン３
４，第１８ターン１８，第２８ターン２８，第１１ター
ン１１，第１９ターン１９，第２２ターン２２が夫々位
置する。このとき、第２３ターン２３と第２２ターン２
２との間の端子間電圧が最も小さく、また第２３ターン
２３と第１１ターンとの間が最も大きくなるが、ここ
で、１ターンの電圧を１０Ｖとした場合、最大で１２タ
ーン分の差がつくこととなるので、最大で１２０Ｖとな
る。この値は、例えば６７５ターンの巻線を構成した場
合、両端間電圧が６７５０Ｖとなることから、約１．８
％に相当し、極めて小さい端子間電圧に抑えることが理
解できよう。As described above, the stepped lowering portion Bd of the winding conductor B is formed in the middle of the winding conductor B between the winding start portion and the winding end portion. Forming a stepwise winding portion Bu which is sequentially wound in each step while being rewound in the axial direction is repeated sequentially to form a stepwise intermediate portion, so that one turn is adjacent to this turn. The voltage between the terminals and the turn can be kept small. That is, at the position where the winding and lowering of the winding conductor B are repeated, for example, in FIG. 2, around the 23rd turn, the 24th turn 24, the 27th turn 27, the 34th turn 3
4, the 18th turn 18, the 28th turn 28, the 11th turn 11, the 19th turn 19 and the 22nd turn 22 are located respectively. At this time, turn 23 and turn 2
The voltage between terminals and 2 is the smallest, and the voltage between the 23rd turn 23 and the 11th turn is the largest, but if the voltage of 1 turn is 10V, the difference of 12 turns at the maximum. The maximum voltage is 120V. This value is about 1.8 because the voltage across both ends becomes 6750V when a winding of 675 turns is formed, for example.
It can be understood that the voltage is suppressed to an extremely small terminal voltage, which is equivalent to%.
【００２６】一般に、端子間電圧は、積層段数が五段の
ように奇数段となる場合、２ｎ＋２ターン分に相当する
大きさであり、従って、図２に示す巻線形態では最大１
２ターンとなることから、その許容範囲内に入る。その
場合、図２に示す巻線形態のみならず、図５に示す如き
巻線形態で巻線しても、端子間電圧を許容範囲内に小さ
く抑えることができる。このようなことは、積層段数が
六段のように偶数となる場合、２ｎ＋１ターン分が端子
間電圧となり、その端子間電圧の許容範囲内にあればよ
い。因みに六段の積層としては、第２図の巻線形態を応
用すれば、図６に示す如くなり、この巻線形態であって
も、巻始め部分と巻終わり部分との間の途中位置では最
大で１１ターン分となり、許容範囲内に入ることができ
る。Generally, the terminal voltage is of a magnitude corresponding to 2n + 2 turns when the number of stacked layers is an odd number, such as five, and therefore, the maximum is 1 in the winding form shown in FIG.
Since it is 2 turns, it is within the allowable range. In that case, not only the winding form shown in FIG. 2 but also the winding form as shown in FIG. In the case where the number of stacked layers is an even number such as six, 2n + 1 turns is the inter-terminal voltage, and it is sufficient that the inter-terminal voltage is within the allowable range. By the way, if the winding form of FIG. 2 is applied to the six-stage stacking, it will be as shown in FIG. 6, and even with this winding form, at the midway position between the winding start part and the winding end part. The maximum is 11 turns, which is within the allowable range.
【００２７】ところで、上述の如き巻線１００におい
て、巻始め部分と巻終わり部分との間の途中位置では階
段状の巻下げ部Ｂｄと巻上げ部Ｂｕとを繰り返して巻回
しているので、巻線導体Ｂに巻崩れが起きやすくなるお
それがある。By the way, in the winding 100 as described above, since the stepwise lowering portion Bd and the winding portion Bu are repeatedly wound at an intermediate position between the winding start portion and the winding end portion, the winding is wound. The conductor B may be easily collapsed.
【００２８】本実施例においては、巻線導体Ｂそのもの
が接着性を有する絶縁材Ｄにより被覆したものである。
接着性を有する絶縁材Ｄとしては、ガラス繊維や高分子
化学繊維等からなる絶縁布にエポキシレジンを塗布，含
浸した半硬化プリプレグ材を用い、これを巻線導体Ｂに
被覆する。或いは、巻線導体Ｂにポリエチレンテレフタ
レートを被覆し、その外周にガラス繊維等の布にエポキ
シレジンを含浸させて半硬化プリプレグ材を構成しても
よい。さらには、ポリエチレンテレフタレートやポリエ
チレンナフタレートのような高分子フィルム，ノーメッ
クスのような絶縁紙にエポキシレジンなどを塗布して被
覆してもよい。In this embodiment, the winding conductor B itself is covered with an insulating material D having adhesiveness.
As the insulating material D having adhesiveness, a semi-cured prepreg material obtained by coating and impregnating an epoxy resin on an insulating cloth made of glass fiber, polymer chemical fiber, or the like is used. Alternatively, the winding conductor B may be coated with polyethylene terephthalate, and a cloth such as glass fiber may be impregnated with epoxy resin on the outer periphery thereof to form a semi-cured prepreg material. Further, a polymer film such as polyethylene terephthalate or polyethylene naphthalate or an insulating paper such as Nomex may be coated with an epoxy resin or the like.
【００２９】何れにしろ、巻線導体Ｂを巻線していると
きや巻線したとき、熱，紫外線等の光を照射することに
よって互いに自己融着させ、これにより巻線導体Ｂの巻
崩れを防止するようにしている。In any case, when the winding conductor B is wound or when it is wound, the winding conductor B is self-fused by being irradiated with light such as heat or ultraviolet rays, whereby the winding conductor B is collapsed. I try to prevent it.
【００３０】また、巻線導体Ｂとして図示の如く、断面
長方形状のものを使用する。この場合、図１に示すよう
に、巻線導体Ｂの縦寸法をａ、その横寸法をｂとし、両
者の大小関係をａ＜ｂとすると、当然のことながら、そ
の差が大きい巻線導体Ｂほど巻崩れの防止を図れること
となる。このように、断面長方形状の巻線導体Ｂを用い
ると、該巻線導体Ｂの巻線時には、巻線導体Ｂがその下
段に巻線されている巻線導体（ターン）の上に安定して
積み重ねられるので、巻崩れの防止をより確実なものと
することができる。なお、巻線寸法の縦，横寸法ａ，ｂ
の大小関係が小さいものは勿論の他、断面円形状の巻線
導体を用いても、前述の如く接着性を有する絶縁材Ｄを
使用すれば、巻線導体Ｂの巻崩れを確実に防止し得る。As the winding conductor B, one having a rectangular cross section is used as shown in the figure. In this case, as shown in FIG. 1, assuming that the vertical dimension of the winding conductor B is a, the lateral dimension thereof is b, and the magnitude relationship between the two is a <b, it is natural that the difference between the winding conductors is large. As much as B, roll collapse can be prevented. Thus, when the winding conductor B having a rectangular cross section is used, when the winding conductor B is wound, the winding conductor B is stabilized on the winding conductor (turn) wound in the lower stage thereof. Since the sheets are stacked on top of each other, the collapse of the winding can be prevented more reliably. In addition, the length and width of the winding dimension a, b
In addition to those having a small magnitude relationship, even if a winding conductor having a circular cross section is used, if the insulating material D having adhesiveness is used as described above, the winding collapse of the winding conductor B can be surely prevented. obtain.
【００３１】また、巻線導体Ｂにより巻始め部分，途中
部分，巻終わり部分を形成した場合、前述の如く、巻線
導体Ｂが階段状に巻進んだり巻戻したりするので、階段
状の空隙Ｇが生じる。例えば、図２に示すような形態の
巻線を得る場合、図７に示すように第１０ターン１０か
ら第１５ターン１５を順次巻線すると、巻型Ａの外周面
において互いに隣合う三つの面Ａ１〜Ａ３では巻線導体
Ｂが綺麗に重なり合っているものの、面Ａ１と反対側と
なる面Ａ４では、図８に示すように、各ターンが一層毎
に重なって巻上げられてしまうので、順次巻上がった各
段のターンの部分と、順次巻下がった各段との間で図９
に示すような空隙Ｇが発生する。この空隙Ｇは、本例で
は巻型Ａとして四角のものを用いると共に、該巻型Ａの
一つの面Ａ４にて巻線導体Ｂを巻上げたり巻下げたりし
ているが、円形，楕円形，角部の半径の大きな四角や多
角形となる巻型を用いても同様のことが発生する。Further, when the winding start portion, the middle portion, and the winding end portion are formed by the winding conductor B, the winding conductor B advances or rewinds in a stepwise manner as described above, so that a stepwise gap is formed. G occurs. For example, in the case of obtaining the winding shown in FIG. 2, if the tenth turn 10 to the fifteenth turn 15 are sequentially wound as shown in FIG. In A1 to A3, the winding conductors B are nicely overlapped with each other, but on the surface A4 opposite to the surface A1, as shown in FIG. Figure 9 between the raised turns and the successively lowered turns.
Gap G as shown in FIG. In this example, the gap G has a square shape as the winding form A, and the winding conductor B is wound up or down on one surface A4 of the winding form A. The same thing occurs when a winding die having a square or polygonal shape with a large corner radius is used.
【００３２】しかし、前述の如く、端子間電圧が許容範
囲内に小さく抑えられているので、そのままにしておい
ても、空隙Ｇによって放電が起こることはなく、巻線作
業の確実な自動化を得ることができる。但し、変圧器に
過電流，過電圧がかかるような使い方をし、部分放電や
局部的な温度上昇が懸念される場合には、前記空隙Ｇに
ワニス，シリコン樹脂，エポキシ樹脂などの絶縁物を充
填し、これによって放熱効果を得るようにしてもよい
が、特に油入変圧器に利用する場合には、空隙Ｇに油が
入り込んで冷却作用を果たすので、巻線全体の冷却効果
を上げることもできる。However, as described above, the voltage between the terminals is kept small within the permissible range. Therefore, even if the voltage is left as it is, discharge does not occur due to the gap G, and reliable automation of the winding work can be obtained. be able to. However, when the transformer is used in such a manner that overcurrent and overvoltage are applied, and there is a concern about partial discharge or local temperature rise, the gap G is filled with an insulating material such as varnish, silicone resin, or epoxy resin. However, when this is used for an oil-filled transformer, in particular, when oil is used in the oil-filled transformer, oil enters the air gap G to perform a cooling action, so that the cooling effect for the entire winding may be improved. it can.
【００３３】図１０は本発明の第二の実施例を示してい
る。この場合は、巻線方法を改良したものである。即
ち、この実施例では、巻線導体Ｂの巻始め部分として、
巻型Ａの外周に第１ターン１〜第５ターン５を軸方向に
沿い一端から他端側に向けて順次巻進みすることにより
１段目Ｂ１を形成し、その後、第４ターン４〜第１ター
ン１の上に第６ターン６〜第９ターン９を順次巻戻すこ
とにより二段目Ｂ２を形成し、以下同様に繰り返して四
段目Ｂ４の第１４ターン１４を形成した後、該ターン１
４上に、最上段ＢＮである第１５ターン１５を巻線する
ことにより、第１５ターン１５と、第１３ターン１３
と、第１２ターン１２と、第６ターン６と、第５ターン
５とからなる階段状に形成する。そして、その階段状の
巻始め部分に連続し、第一の実施例と同様に階段状の巻
下げ部Ｂｄと巻上げ部Ｂｕとを繰り返すことにより、変
圧器用巻線１００を構成している。FIG. 10 shows a second embodiment of the present invention. In this case, the winding method is improved. That is, in this embodiment, as the winding start portion of the winding conductor B,
The first turn B1 is formed by sequentially winding the first turn 1 to the fifth turn 5 along the axial direction from one end to the other end on the outer periphery of the winding form A, and then the fourth turn 4 to the fourth turn. The 6th turn 6 to the 9th turn 9 are sequentially rewound on the 1st turn 1 to form the second stage B2, and thereafter the same manner is repeated to form the 14th turn 14 of the 4th stage B4. 1
By winding the fifteenth turn 15 which is the uppermost BN on the No. 4, the fifteenth turn 15 and the thirteenth turn 13
Then, the twelfth turn 12, the sixth turn 6 and the fifth turn 5 are formed in a staircase shape. Then, the transformer winding 100 is formed by repeating the stepwise winding-down part Bd and the winding-up part Bu, which are continuous with the stepwise winding start part, similarly to the first embodiment.
【００３４】従って、この実施例では、巻始め部分にお
いて巻線導体Ｂを軸方向に連続して巻回することにより
１段目Ｂ１を形成し、これに続いて２段目Ｂ２〜最上段
ＢＮを形成した後、巻下げ部Ｂｄと巻上げ部Ｂｕとの途
中部分を形成するので、巻始め部分の構造が単純なもの
となる。そのため、巻線導体Ｂの巻始め作業が容易とな
る。Therefore, in this embodiment, the winding conductor B is continuously wound in the axial direction at the winding start portion to form the first stage B1, which is followed by the second stage B2 to the uppermost stage BN. After forming, the intermediate portion between the lowering portion Bd and the winding portion Bu is formed, so that the structure of the winding start portion becomes simple. Therefore, the work of starting the winding of the winding conductor B is facilitated.
【００３５】また、このような巻線形態では、第５ター
ン５〜第２２ターン２２間と、第６ターン６〜第２３タ
ーン２３間とでは、１７ターン分の端子間電圧が加わる
こととなる。そのとき、端子間電圧が許容範囲外を越え
る大きなものとなる場合には、第６ターン６，第５ター
ン５と、第１８ターン１８，第１９ターン１９，第２０
ターン２０との間に層間絶縁材Ｅを挿入する。この場
合、層間絶縁材Ｅは、巻線導体Ｂが第一の実施例と同様
に、接着性を有する絶縁材Ｄにより被覆してあるので、
各ターンが巻線されると、その接着により、層間絶縁材
Ｅを確実に止着できるので、該絶縁材Ｅをいちいち接着
する必要がない。Further, in such a winding form, the terminal voltage of 17 turns is applied between the 5th turn to the 22nd turn 22 and between the 6th turn 6 to the 23rd turn 23. . At that time, when the voltage between the terminals exceeds the allowable range and becomes large, the sixth turn 6, the fifth turn 5, the 18th turn 18, the 19th turn 19, the 20th turn.
The interlayer insulating material E is inserted between the turn 20 and the turn 20. In this case, since the winding conductor B of the interlayer insulating material E is covered with the insulating material D having adhesiveness as in the first embodiment,
When each turn is wound, the interlayer insulating material E can be securely fixed by the bonding, so that it is not necessary to bond the insulating material E one by one.
【００３６】なお、本例では、巻線導体Ｂの巻初め部分
についてのみ述べたが、巻終わり部分については、その
巻始め部分と逆形態となるように、或いは図３，図４に
示す如き形態となるように巻線してもよい。In this example, only the winding start portion of the winding conductor B is described, but the winding end portion may have a shape opposite to that of the winding start portion, or as shown in FIGS. You may wind so that it may become a form.
【００３７】図１１は本発明の第三の実施例を示してい
る。この場合、これまで前述した実施例では何れも、階
段状に巻線導体Ｂを巻線するため、巻線導体Ｂの巻始め
部分が複雑となっている。そこで、実施例では、巻線導
体Ｂの巻始め部分と代わりとして、絶縁材からなるスペ
ーサＳを用い、そのスペーサＳに沿い巻線導体Ｂを巻線
することにより、変圧器用巻線を構成するようにしてい
る。FIG. 11 shows a third embodiment of the present invention. In this case, in all of the above-described embodiments, the winding conductor B is wound stepwise, so that the winding start portion of the winding conductor B is complicated. Therefore, in the embodiment, instead of the winding start portion of the winding conductor B, a spacer S made of an insulating material is used, and the winding conductor B is wound along the spacer S to form a transformer winding. I am trying.
【００３８】スペーサＳは、絶縁性があって安価なこと
から、エポキシ系の樹脂等により予め成形されている。
そして、スペーサＳは、例えば、五段構造の巻線を形成
する場合、巻型Ａの一端に位置する端部においては、巻
線導体Ｂが四段ＳＢ４となる高さに相当する寸法を有
し、そこから巻型Ａの他端側に向かうに従い順次高さを
減らした階段形状をなしている。従って、スペーサＳ
は、巻線に際し、巻型Ａの一端部に予め取付けられるこ
とにより、巻線導体Ｂの巻始め部分に相当する形状を形
成する。Since the spacer S has an insulating property and is inexpensive, it is preliminarily molded of epoxy resin or the like.
Then, for example, when forming a winding having a five-step structure, the spacer S has a dimension corresponding to the height at which the winding conductor B has four steps SB4 at the end located at one end of the winding form A. The height is gradually reduced toward the other end of the winding form A to form a stepped shape. Therefore, the spacer S
When the winding is wound, it is attached to one end of the winding form A in advance to form a shape corresponding to the winding start portion of the winding conductor B.
【００３９】このように、巻始め部分にスペーサＳを用
いると、導体の占積率がそれだけ下がるものの、巻線導
体Ｂの巻線作業が最初の時点から、巻下げ部Ｂｄと巻上
げ部Ｂｕとの繰り返しを行うことができる。即ち、巻線
導体Ｂを、スペーサＳの上段ＳＢ４から該スペーサＳに
沿い階段状に順次巻下げながら巻進み、第１ターン１〜
第５ターン５からなる巻下げ部Ｂｄを形成し、その後、
第６ターン６を巻回すると共に、これに続き第７〜第１
０ターン７〜１０を巻戻しながら巻上げて階段状の巻上
げ部Ｂｕを形成し、以下、これを順次繰り返すこととな
る。As described above, when the spacer S is used at the winding start portion, the space factor of the conductor is lowered by that amount, but the winding work of the winding conductor B is started from the first time, and the winding down portion Bd and the winding up portion Bu are formed. Can be repeated. That is, the winding conductor B is wound from the upper stage SB4 of the spacer S along the spacer S in a stepwise manner while being sequentially wound, and the first turn 1 to
The unwinding part Bd consisting of the fifth turn 5 is formed, and then
The sixth turn 6 is wound, and then the seventh to the first
The 0 turns 7 to 10 are unwound and wound up to form a staircase-shaped winding portion Bu, and thereafter, this is sequentially repeated.
【００４０】従って、巻線導体Ｂの巻線作業が巻下げ部
Ｂｄと巻上げ部Ｂｕとの繰り返しで始まり、巻回作業が
複雑となる巻始め部分を省略できるので、巻線作業をよ
り簡素化することができる。なお、本例では、巻始め部
分にのみスペーサＳを用いた例を示したが、巻終わり部
分においてもスペーサを同様に用いれば、いっそうの簡
素化を図り得るのは勿論であり、自動巻線のより単純化
を図ることもできる。なお、これまで述べた実施例で
は、最下段Ｂ１と最上段ＢＮ間の巻線導体Ｂが全て同一
列となるように整列された例を示したが、奇数段と偶数
段との何れかを軸方向にずらして巻線することができ
る。例えば、図１２は一段目Ｂ１，三段目Ｂ３，最上段
ＢＮに対し、二段目Ｂ２，四段目Ｂ４を巻線導体Ｂの半
ピッチ分だけ軸方向にずらして巻線している。図１３は
図１２の場合とは逆形態であって、一段目Ｂ１，三段目
Ｂ３，最上段ＢＮの巻線導体Ｂをその半ピッチ分だけ軸
方向にずらして巻線している。このように巻線導体Ｂを
段によって違えた場合、特定の巻線導体とその周囲の巻
線導体間の端子間電圧は、図２に示す実施例の場合と同
様の大きさとなり、低く抑えることができるので、巻線
構造の裕度を広げることができる。Therefore, the winding work of the winding conductor B is started by repeating the lowering part Bd and the winding part Bu, and the winding start part which complicates the winding work can be omitted, so that the winding work is further simplified. can do. In addition, in this example, the example in which the spacer S is used only at the winding start portion is shown. However, if the spacer is used at the winding end portion as well, further simplification can be achieved. It is also possible to make it simpler. In the above-described embodiments, the winding conductors B between the lowermost stage B1 and the uppermost stage BN are aligned so that they are all in the same row, but either the odd-numbered stage or the even-numbered stage is used. It is possible to wind by shifting in the axial direction. For example, in FIG. 12, the second stage B2 and the fourth stage B4 are axially shifted by half the pitch of the winding conductor B with respect to the first stage B1, the third stage B3, and the uppermost stage BN. FIG. 13 is the reverse of the case of FIG. 12, in which the winding conductors B of the first stage B1, the third stage B3, and the uppermost stage BN are wound while being shifted in the axial direction by the half pitch. In this way, when the winding conductor B is changed depending on the stage, the terminal voltage between the specific winding conductor and the surrounding winding conductor becomes the same magnitude as in the embodiment shown in FIG. Therefore, it is possible to widen the margin of the winding structure.
【００４１】図１４及び図１５は本発明の第四，第五の
実施例を夫々示している。これまでの実施例では、巻線
導体Ｂの巻始め部分と巻終わり部分との間の途中部分
が、巻下げ部Ｂｄと巻上げ部Ｂｕとを繰り返すして形成
していた。本実施例では、巻線導体Ｂの途中部分を全て
一定方向に巻線できるようにしたものである。14 and 15 show the fourth and fifth embodiments of the present invention, respectively. In the above-described embodiments, the middle portion between the winding start portion and the winding end portion of the winding conductor B is formed by repeating the lowering portion Bd and the winding portion Bu. In the present embodiment, the middle part of the winding conductor B can be entirely wound in a fixed direction.
【００４２】即ち、図１４に示す実施例は、巻線導体Ｂ
の巻始め部分として、第１ターン１〜第１０ターン１０
を巻回する。この場合、第２ターン２から第３ターン３
へは、また第４ターン４から第６ターン６へは、さらに
第７ターンから第１０ターン１０へは、巻戻しながら順
次巻上がっている。そして、この巻始め部分に連続する
途中部分として、第１１ターン１１〜第１５ターン１
５，第１６ターン１６〜第２０ターン２０などが全て巻
戻しながら順次巻上がっている。但し、巻線導体Ｂが最
上段ＢＮから最下段Ｂ１まで破線にて示すように渡る
（渡り線）ので、その分だけ外周が膨らむこととなる。
しかし、そのような脹らみは、絶縁材ｃを各段毎に用い
る第一の従来技術に比較し、小さいものであり、むし
ろ、途中部分を形成する巻線導体Ｂが、最下段Ｂ１と最
上段ＢＮとの間で共に同一方向に巻線されるので、巻線
方向が単純となり、巻線作業をいっそう簡素化すること
ができる。That is, the embodiment shown in FIG.
1st turn to 10th turn 10
Is wound. In this case, turn 2 to turn 3
, 4th turn to 6th turn 6, and further 7th turn to 10th turn 10 are being rewound. Then, as an intermediate part continuing from this winding start part, the 11th turn 11 to the 15th turn 1
5, 16th turn 16th to 20th turn 20, etc. are all wound in sequence while rewinding. However, since the winding conductor B crosses from the uppermost stage BN to the lowermost stage B1 as shown by the broken line (crossover line), the outer circumference expands by that amount.
However, such a bulge is smaller than that in the first conventional technique in which the insulating material c is used for each stage, and rather, the winding conductor B forming an intermediate portion is the lowermost stage B1. Since winding is performed in the same direction with the uppermost BN, the winding direction is simple, and the winding work can be further simplified.
【００４３】図１５に示す実施例は、図１４に示す実施
例の巻始め部分を変更したものであり、途中部分におい
ては図１４と同様であるので、同じ効果を得ることがで
きる。なお、図１４，図１５に示す実施例では何れも、
途中部分が巻線導体Ｂを巻戻しながら巻き上げた例を示
したが、巻進めながら巻下げるように巻線しても同様の
効果を得ることができる。そして、これら両実施例にお
いても、図１１のようなスペーサＳを用いることもでき
る。The embodiment shown in FIG. 15 is a modification of the winding start portion of the embodiment shown in FIG. 14, and since the midway portion is the same as that of FIG. 14, the same effect can be obtained. In addition, in each of the examples shown in FIGS. 14 and 15,
Although an example in which the winding conductor B is wound up while the winding conductor B is unwound at the middle portion is shown, the same effect can be obtained by winding the winding conductor B so that it is wound down while being advanced. Also in both of these embodiments, the spacer S as shown in FIG. 11 can be used.
【００４４】図１６はタップ線を引き出した状態を示し
ている。この実施例では、タップ線を引き出す場合、そ
のタップ線を巻線導体Ｂの巻線方向とは逆方向に引き出
すようにしている。例えば、各ターンのうち、巻下げ部
Ｂｄの一段目Ｂ１の第４０ターン４０をタップ線Ｔ１と
して引き出す場合、そのタップ線Ｔ１を、巻下げ部Ｂｄ
である第３９ターン３９，第３８ターン３８，第３７タ
ーン３７，第３６ターン３６に沿わして引き出し。即
ち、タップ線Ｔ１は、それまで巻進めながら巻下げてき
た巻下げ部Ｂｄに沿った形で引き出される。このように
すると、巻線導体Ｂをその後に続いて巻線しても、タッ
プ線Ｔ１とその周囲の各ターン間の電位差が端子間電圧
以下となるので、タップ線Ｔ１の周りにいちいち絶縁処
理を施す必要がなくなる。従って、第４７ターン４７の
巻線導体Ｂをタップ線Ｔ２として引き出す場合には、そ
の前の第４６ターン４６に戻すように引き出せば良い。FIG. 16 shows a state in which the tap line is drawn out. In this embodiment, when the tap wire is drawn, the tap wire is drawn in the direction opposite to the winding direction of the winding conductor B. For example, of the respective turns, when the 40th turn 40 of the first stage B1 of the unwinding part Bd is pulled out as the tap line T1, the tap line T1 is pulled out from the unwinding part Bd.
Pull out along the 39th turn 39, 38th turn 38, 37th turn 37, 36th turn 36. That is, the tap wire T1 is pulled out along the unwinding portion Bd which has been unwound while being advanced. With this arrangement, even if the winding conductor B is subsequently wound, the potential difference between the tap line T1 and each turn around the tap line T1 becomes equal to or less than the inter-terminal voltage. Therefore, insulation treatment is performed around the tap line T1. There is no need to apply. Therefore, when the winding conductor B of the 47th turn 47 is drawn out as the tap line T2, it may be drawn back to the 46th turn 46 before it.
【００４５】なお、タップ線Ｔ１，Ｔ２を引き出した場
合、その後に巻線導体Ｂを巻線すると、図示の如く、タ
ップ線の分だけ空隙が生じるが、その空隙は、端子間電
圧が小さく抑えられているので問題はない。When the tap conductors T1 and T2 are drawn out and the winding conductor B is wound thereafter, a gap is created by the length of the tap conductor as shown in the figure. There is no problem because it is done.
【００４６】[0046]
【発明の効果】以上述べたように、本発明の請求項１〜
３によれば、巻型の外周上の一端部の巻始め部分と他端
部に形成される巻終わり部分との間に、巻線導体を軸方
向に巻進めながら、かつ最上段から最下段に至るに従い
各段毎に順次巻下げる階段状の巻下げ部を形成すること
と、巻線導体を軸方向に巻戻しながら、かつ巻下げ部に
隣接する最下段から最上段に至るに従い各段毎に順次巻
上げる階段状の巻上げ部を形成することとを順次繰り返
し、階段状の途中部分を形成し、しかも巻線導体を、接
着性を有する絶縁材で被覆して構成したので、巻線導体
とその周囲の巻線導体間の端子間電圧を許容範囲内に確
実に小さく抑えることができると共に、巻線導体に巻崩
れが起こることを防止できる結果、階段状の巻線であっ
ても、巻線作業の自動化を的確に行うことができ、それ
だけ信頼性を高めることができる効果がある。As described above, claims 1 to 5 of the present invention.
According to 3, while winding the winding conductor in the axial direction between the winding start portion at one end and the winding end portion formed at the other end on the outer circumference of the winding form, To form a stepwise unwinding part for sequentially winding down each step, and rewinding the winding conductor in the axial direction, and from the lowest step adjacent to the unwinding part to the uppermost step. Forming a stepwise winding portion for each winding is repeated in sequence to form a stepwise intermediate portion, and the winding conductor is covered with an insulating material having adhesiveness. The voltage between the terminals of the conductor and the winding conductors around it can be reliably suppressed to a small value within the allowable range, and the winding collapse can be prevented from occurring in the winding conductor. , The winding work can be automated accurately, and the reliability is improved accordingly. There is an effect that can be.
【００４７】特に、請求項２によれば、巻線導体が断面
方形をなすので、巻線導体に巻崩れが起こるのを確実に
防止して巻線作業の安定化を図ることができ、より信頼
性を高めることができる効果があり、また請求項３によ
れば、巻線導体の階段状の巻始め部分と巻終わり部分と
のうち、少なくとも巻始め部分の位置に該巻始め部分と
対応する形状の絶縁性のスペーサを有するので、巻線導
体の巻線を階段状の巻下がり部分から開始することがで
き、請求項１に比較し、巻線作業の簡素化を図ることが
できる効果がある。さらに請求項４によれば、請求項１
〜３の効果を全て達成し得る効果がある。In particular, according to the second aspect, since the winding conductor has a rectangular cross section, it is possible to reliably prevent the winding conductor from collapsing and to stabilize the winding work. According to the third aspect, there is an effect that reliability can be enhanced, and at least the winding start portion of the stepwise winding start portion and the winding end portion of the winding conductor corresponds to the winding start portion. Since the insulating spacer having the shape is formed, the winding of the winding conductor can be started from the stepwise winding-down portion, and the winding work can be simplified as compared with claim 1. There is. Further, according to claim 4, claim 1
There is an effect that can achieve all the effects of ~ 3.
【００４８】そして、本発明の請求項５によれば、巻線
導体が接着性を有する絶縁材で被覆された巻線導体を用
い、この巻線導体を、巻型の外周上に巻線して階段状の
巻始め部分を形成し、次いで、階段状の巻始め部分に沿
い該巻始め部分の巻線導体を軸方向に巻進めながら、か
つ最上段から最下段に至るに従い各段毎に順次巻下げる
階段状の巻下げ部を形成し、その後、該巻下げ部の先端
の巻線導体を軸方向に巻戻しながら、かつ巻下げ部に隣
接する最下段から最上段に至るに従い各段毎に順次巻上
げて階段状の巻上げ部を形成し、以下、階段状の巻下げ
部の形成と階段状の巻上げ部の形成とを順次繰り返して
巻線の途中部分を形成し、該途中部分の先端の巻線を所
望形状に形成して巻終わりを形成するので、請求項１の
巻線を的確に製作し得る効果がある。According to a fifth aspect of the present invention, a winding conductor coated with an insulating material having adhesiveness is used, and the winding conductor is wound on the outer circumference of the winding form. To form a stepwise winding start portion, and then winding the winding conductor of the winding start portion along the stepwise winding start portion in the axial direction, and in each step from the uppermost stage to the lowermost stage. A stepwise winding-down portion for sequentially winding is formed, and thereafter, the winding conductor at the tip of the winding-down portion is axially rewound, and each step is performed from the lowest stage adjacent to the lowering unit to the uppermost stage. Each step is sequentially wound to form a staircase-shaped winding portion, and thereafter, the formation of the staircase-shaped lowering portion and the formation of the staircase-shaped winding portion are sequentially repeated to form an intermediate portion of the winding. Since the winding at the tip is formed into a desired shape to form the end of winding, the winding according to claim 1 is accurately manufactured. There is a get effect.
【００４９】また、請求項６によれば、巻型の外周上の
一端部に、巻線導体の階段状の巻始め部分と対応する形
状の絶縁性のスペーサを取付けておき、次いで、そのス
ペーサに沿い、最初から巻線導体の巻下げと巻上げとを
繰り返して巻線を形成できるので、請求項２の巻線を的
確に製作し得る効果がある。According to the sixth aspect, an insulating spacer having a shape corresponding to the stepwise winding start portion of the winding conductor is attached to one end portion on the outer periphery of the winding die, and then the spacer is formed. A winding wire can be formed by repeating winding and winding of the winding conductor from the beginning along the line, so that there is an effect that the winding wire of claim 2 can be accurately manufactured.
【図１】本発明の巻線方法を実施するための変圧器用巻
線の実施例を示す要部の断面図。FIG. 1 is a sectional view of a main part showing an embodiment of a transformer winding for carrying out a winding method of the present invention.
【図２】本発明の巻線方法の第一の実施例を示す要部の
説明図。FIG. 2 is an explanatory diagram of a main part showing a first embodiment of a winding method of the present invention.
【図３】五段構造で８０ターン分を巻線する場合の巻線
例を示す説明図。FIG. 3 is an explanatory view showing an example of winding when winding 80 turns in a five-stage structure.
【図４】五段構造で６７５ターン分を巻線する場合の巻
線例を示す説明図。FIG. 4 is an explanatory view showing a winding example in the case of winding 675 turns in a five-stage structure.
【図５】巻始め部分の巻線を変更した巻線例を示す説明
図。FIG. 5 is an explanatory diagram showing a winding example in which the winding at the winding start portion is changed.
【図６】六段構造の巻線例を示す説明図。FIG. 6 is an explanatory diagram showing an example of a winding having a six-stage structure.
【図７】図２の巻線例を上方からみた巻線導体の斜視
図。FIG. 7 is a perspective view of a winding conductor when the winding example of FIG. 2 is viewed from above.
【図８】巻型を反転させ場合の巻線導体を示す斜視図。FIG. 8 is a perspective view showing a winding conductor when the winding form is reversed.
【図９】巻線導体間に空隙が生じた状態を示す断面図。FIG. 9 is a cross-sectional view showing a state in which a gap is formed between winding conductors.
【図１０】本発明の巻線方法の第二の実施例を示す説明
図。FIG. 10 is an explanatory view showing a second embodiment of the winding method of the present invention.
【図１１】本発明の巻線方法の第三の実施例を示す説明
図。FIG. 11 is an explanatory view showing a third embodiment of the winding method of the present invention.
【図１２】奇数段の巻線導体を偶数段の巻線導体に対し
ずらした巻線例を示す説明図。FIG. 12 is an explanatory view showing an example of winding in which odd-numbered winding conductors are displaced from even-numbered winding conductors.
【図１３】偶数段の巻線導体を奇数段の巻線導体に対し
ずらした巻線例を示す説明図。FIG. 13 is an explanatory view showing an example of winding in which even-numbered winding conductors are displaced from odd-numbered winding conductors.
【図１４】本発明の巻線方法の第四の実施例を示す説明
図。FIG. 14 is an explanatory view showing a fourth embodiment of the winding method of the present invention.
【図１５】本発明の巻線方法の第五の実施例を示す説明
図。FIG. 15 is an explanatory view showing a fifth embodiment of the winding method of the present invention.
【図１６】本発明の巻線方法の他の実施例を示すタップ
引き出しの説明図。FIG. 16 is an explanatory view of a tap drawer showing another embodiment of the winding method of the present invention.
【図１７】従来技術の変圧器用巻線の一構成例を示す断
面説明図。FIG. 17 is an explanatory cross-sectional view showing an example of the configuration of a conventional transformer winding.
Ａ…巻型、Ｂ…巻線導体、Ｂｄ…巻線導体の巻下げ部、
Ｂｕ…巻線導体の巻き上げ部、Ｃ…外周絶縁層、Ｄ…接
着性を有する絶縁材、Ｂ１…最下段、ＢＮ…最上段、Ｓ
…スペーサ。A ... Winding type, B ... Winding conductor, Bd ... Unwinding part of winding conductor,
Bu ... Winding part of winding conductor, C ... Peripheral insulation layer, D ... Adhesive insulating material, B1 ... Bottom stage, BN ... Top stage, S
…Spacer.
Claims (6)
所定の段層に積み重ねられ、かつ階段状をなす巻始め部
分を形成し、その巻始め部分と巻型の外周上の他端部に
形成される巻終わり部分との間に、巻線導体を軸方向に
巻進めながら、かつ最上段から最下段に至るに従い各段
毎に順次巻下げる階段状の巻下げ部を形成することと、
巻線導体を軸方向に巻戻しながら、かつ巻下げ部に隣接
する最下段から最上段に至るに従い各段毎に順次巻上げ
る階段状の巻上げ部を形成することとを順次繰り返し、
階段状の途中部分を形成する変圧器用巻線であって、前
記巻線導体を、接着性を有する絶縁材で被覆してあるこ
とを特徴とする変圧器用巻線。1. A winding start portion is stacked at a predetermined step layer by a winding conductor on one end portion on the outer circumference of the winding form and forms a stepwise winding start portion, and the winding start portion and other portions on the outer circumference of the winding form are formed. Between the winding end portion formed at the end portion, a stepwise winding-down portion is formed which winds the winding conductor in the axial direction and sequentially winds down each stage from the uppermost stage to the lowermost stage. That
While rewinding the winding conductor in the axial direction, and forming a stepwise winding portion that is sequentially wound in each stage from the lowermost stage adjacent to the lowering unit to the uppermost stage,
A transformer winding forming a stepwise intermediate portion, wherein the winding conductor is covered with an insulating material having adhesiveness.
所定の段層に積み重ねられ、かつ階段状をなす巻始め部
分を形成し、その巻始め部分と巻型の外周上の他端部に
形成される巻終わり部分との間に、巻線導体を軸方向に
巻進めながら、かつ最上段から最下段に至るに従い各段
毎に順次巻下げる階段状の巻下げ部を形成することと、
巻線導体を軸方向に巻戻しながら、かつ巻下げ部に隣接
する最下段から最上段に至るに従い各段毎に順次巻上げ
る階段状の巻上げ部を形成することとを順次繰り返し、
階段状の途中部分を形成する変圧器用巻線であって、前
記巻線導体を、接着性を有する絶縁材で被覆すると共
に、巻線導体が断面方形をなしていることを特徴とする
変圧器用巻線。2. A winding start portion is formed at one end on the outer circumference of the winding form by a winding conductor so as to be stacked in a predetermined step layer and has a step shape. The winding start part and other portions on the outer circumference of the winding form. Between the winding end portion formed at the end portion, a stepwise winding-down portion is formed which winds the winding conductor in the axial direction and sequentially winds down each stage from the uppermost stage to the lowermost stage. That
While rewinding the winding conductor in the axial direction, and forming a stepwise winding portion that is sequentially wound in each stage from the lowermost stage adjacent to the lowering unit to the uppermost stage,
A winding for a transformer forming a stepwise intermediate portion, characterized in that the winding conductor is covered with an insulating material having adhesiveness, and the winding conductor has a rectangular cross section. Winding.
所定の段層に積み重ねられ、かつ階段状をなす巻始め部
分を形成し、その巻始め部分と巻型の外周上の他端部に
形成される巻終わり部分との間に、巻線導体を軸方向に
巻進めながら、かつ最上段から最下段に至るに従い各段
毎に順次巻下げる階段状の巻下げ部を形成することと、
巻線導体を軸方向に巻戻しながら、かつ巻下げ部に隣接
する最下段から最上段に至るに従い各段毎に順次巻上げ
る階段状の巻上げ部を形成することとを順次繰り返し、
階段状の途中部分を形成する変圧器用巻線であって、前
記巻線導体の階段状の巻始め部分と巻終わり部分とのう
ち、少なくとも巻始め部分の位置に該巻始め部分と対応
する形状の絶縁性のスペーサを有することを特徴とする
変圧器用巻線。3. A winding start portion is formed at one end on the outer circumference of the winding form by a winding conductor so as to be stacked in a predetermined step layer and has a step shape, and the winding start part and other portions on the outer circumference of the winding form. Between the winding end portion formed at the end portion, a stepwise winding-down portion is formed which winds the winding conductor in the axial direction and sequentially winds down each stage from the uppermost stage to the lowermost stage. That
While rewinding the winding conductor in the axial direction, and forming a stepwise winding portion that is sequentially wound in each stage from the lowermost stage adjacent to the lowering unit to the uppermost stage,
A transformer winding that forms a stepwise intermediate portion, and a shape corresponding to the winding start portion at least at the position of the winding start portion of the stepwise winding start portion and winding end portion of the winding conductor. A winding for a transformer, characterized in that it has an insulating spacer.
所定の段層に積み重ねられ、かつ階段状をなす巻始め部
分を形成し、その巻始め部分と巻型の外周上の他端部に
形成される巻終わり部分との間に、巻線導体を軸方向に
巻進めながら、かつ最上段から最下段に至るに従い各段
毎に順次巻下げる階段状の巻下げ部を形成することと、
巻線導体を軸方向に巻戻しながら、かつ巻下げ部に隣接
する最下段から最上段に至るに従い各段毎に順次巻上げ
る階段状の巻上げ部を形成することとを順次繰り返し、
階段状の途中部分を形成する変圧器用巻線であって、前
記巻線導体が断面方形をなすと共に、該方形断面の巻線
を、接着性を有する絶縁材で被覆し、また、前記階段状
の巻始め部分と巻終わり部分とのうち、少なくとも巻始
め部分の位置に該巻始め部分と対応する形状の絶縁性の
スペーサを有することを特徴とする変圧器用巻線。4. A winding start portion is formed at one end on the outer circumference of the winding form by a winding conductor so as to be stacked in a predetermined step layer and has a stepwise shape. The winding start part and other portions on the outer circumference of the winding form. Between the winding end portion formed at the end portion, a stepwise winding-down portion is formed which winds the winding conductor in the axial direction and sequentially winds down each stage from the uppermost stage to the lowermost stage. That
While rewinding the winding conductor in the axial direction, and forming a stepwise winding portion that is sequentially wound in each stage from the lowermost stage adjacent to the lowering unit to the uppermost stage,
A transformer winding forming an intermediate step portion, wherein the winding conductor has a rectangular cross section, and the winding having the square cross section is covered with an insulating material having adhesiveness. A winding for a transformer, which has an insulating spacer having a shape corresponding to the winding start portion at least at a position of the winding start portion of the winding start portion and the winding end portion.
た巻線導体を用い、この巻線導体を、巻型の外周上に巻
線して階段状の巻始め部分を形成し、次いで、階段状の
巻始め部分に沿い該巻始め部分の巻線導体を軸方向に巻
進めながら、かつ最上段から最下段に至るに従い各段毎
に順次巻下げる階段状の巻下げ部を形成し、その後、該
巻下げ部の先端の巻線導体を軸方向に巻戻しながら、か
つ巻下げ部に隣接する最下段から最上段に至るに従い各
段毎に順次巻上げて階段状の巻上げ部を形成し、以下、
階段状の巻下げ部の形成と階段状の巻上げ部の形成とを
順次繰り返して巻線の途中部分を形成し、該途中部分の
先端の巻線を所望形状に形成して巻終わりを形成するこ
とを特徴とする変圧器用巻線の巻線方法。5. A winding conductor whose outer periphery is covered with an insulating material having adhesiveness is used, and the winding conductor is wound on the outer periphery of a winding form to form a stepwise winding start portion, and Forming a staircase-like unwinding part for sequentially winding the winding conductor in the winding start part along the stepwise winding start part in the axial direction and sequentially winding each step from the uppermost stage to the lowermost stage. After that, while winding the winding conductor at the tip of the lowering portion in the axial direction, and sequentially winding up from the lowest stage adjacent to the lowering stage to the uppermost stage, a stepwise winding portion is formed. And below,
The stepwise winding portion and the stepwise winding portion are sequentially repeated to form an intermediate portion of the winding, and the winding at the tip of the intermediate portion is formed into a desired shape to form the winding end. A winding method for a transformer winding.
体の階段状の巻始め部分と対応する形状の絶縁性のスペ
ーサを取付けておくと共に、外周が接着性を有する巻線
導体を用い、次いで、そのスペーサに沿って巻線導体を
軸方向に巻進めながら、かつ最上段から最下段に至るに
従い各段毎に順次巻下げる階段状の巻下げ部を形成し、
さらに、該巻下げ部の先端の巻線導体を軸方向に巻戻し
ながら、かつ巻下げ部に隣接する最下段から最上段に至
るに従い各段毎に順次巻上げて階段状の巻上げ部を形成
し、以下、階段状の巻下げ部の形成と階段状の巻上げ部
の形成とを順次繰り返して巻線を形成することを特徴と
する変圧器用巻線の巻線方法。6. A winding having an adhesive property, the insulating spacer having a shape corresponding to the stepwise winding start portion of the winding conductor is previously attached to one end on the outer circumference of the winding form. Using a conductor, and then winding the winding conductor along the spacer in the axial direction, and forming a step-like unwinding part for sequentially winding each step from the uppermost stage to the lowermost stage,
Further, while winding back the winding conductor at the tip of the lowering portion in the axial direction, and sequentially winding the winding conductor in each step from the lowermost stage adjacent to the lowering portion to the uppermost stage, a stepwise winding portion is formed. Hereinafter, a winding method of a winding for a transformer, characterized in that the winding is formed by sequentially repeating the formation of the stepwise winding portion and the formation of the stepwise winding portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15351695A JP3339990B2 (en) | 1995-06-20 | 1995-06-20 | Transformer winding and winding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15351695A JP3339990B2 (en) | 1995-06-20 | 1995-06-20 | Transformer winding and winding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH097852A true JPH097852A (en) | 1997-01-10 |
| JP3339990B2 JP3339990B2 (en) | 2002-10-28 |
Family
ID=15564254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15351695A Expired - Fee Related JP3339990B2 (en) | 1995-06-20 | 1995-06-20 | Transformer winding and winding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3339990B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003347145A (en) * | 2002-05-30 | 2003-12-05 | Daishowa Seiki Co Ltd | Wire-wound coil and its manufacturing device |
| JP2008123759A (en) * | 2006-11-09 | 2008-05-29 | Sumitomo Electric Wintec Inc | Method of manufacturing insulation wire, insulation wire, and electric coil |
| JP2008216244A (en) * | 2007-03-05 | 2008-09-18 | Mettler-Toledo Ag | Coil and its manufacturing method for force measuring device |
| US7551053B2 (en) | 2003-11-05 | 2009-06-23 | Tdk Corporation | Coil device |
| US7746207B2 (en) | 2003-11-05 | 2010-06-29 | Tdk Corporation | Coil device |
| JP2016213368A (en) * | 2015-05-12 | 2016-12-15 | 株式会社村田製作所 | Coil component |
-
1995
- 1995-06-20 JP JP15351695A patent/JP3339990B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003347145A (en) * | 2002-05-30 | 2003-12-05 | Daishowa Seiki Co Ltd | Wire-wound coil and its manufacturing device |
| US7551053B2 (en) | 2003-11-05 | 2009-06-23 | Tdk Corporation | Coil device |
| US7746207B2 (en) | 2003-11-05 | 2010-06-29 | Tdk Corporation | Coil device |
| JP2008123759A (en) * | 2006-11-09 | 2008-05-29 | Sumitomo Electric Wintec Inc | Method of manufacturing insulation wire, insulation wire, and electric coil |
| JP2008216244A (en) * | 2007-03-05 | 2008-09-18 | Mettler-Toledo Ag | Coil and its manufacturing method for force measuring device |
| JP2016213368A (en) * | 2015-05-12 | 2016-12-15 | 株式会社村田製作所 | Coil component |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3339990B2 (en) | 2002-10-28 |
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