JP2016219583A - Method for manufacturing air core coil, air core coil, rogowski coil, clamp sensor and clamp type ammeter - Google Patents

Method for manufacturing air core coil, air core coil, rogowski coil, clamp sensor and clamp type ammeter Download PDF

Info

Publication number
JP2016219583A
JP2016219583A JP2015102326A JP2015102326A JP2016219583A JP 2016219583 A JP2016219583 A JP 2016219583A JP 2015102326 A JP2015102326 A JP 2015102326A JP 2015102326 A JP2015102326 A JP 2015102326A JP 2016219583 A JP2016219583 A JP 2016219583A
Authority
JP
Japan
Prior art keywords
coil
air
clamp
core coil
core
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
Application number
JP2015102326A
Other languages
Japanese (ja)
Other versions
JP6240869B2 (en
Inventor
理 河本
Osamu Kawamoto
理 河本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyoritsu Electrical Instr Works Ltd
Kyoritsu Electrical Instruments Works Ltd
Original Assignee
Kyoritsu Electrical Instr Works Ltd
Kyoritsu Electrical Instruments Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kyoritsu Electrical Instr Works Ltd, Kyoritsu Electrical Instruments Works Ltd filed Critical Kyoritsu Electrical Instr Works Ltd
Priority to JP2015102326A priority Critical patent/JP6240869B2/en
Publication of JP2016219583A publication Critical patent/JP2016219583A/en
Application granted granted Critical
Publication of JP6240869B2 publication Critical patent/JP6240869B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Insulating Of Coils (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing an air core coil capable of reducing the number of parts and shortening the manufacturing time.SOLUTION: A coiled body is formed by winding a fusion magnet wire around the outer circumferential surface of a flexible tube 4 held in a straight line with a winding machine, the flexible tube on which the coil body is formed is bent into a shape retaining groove 71 of a jig 7 and fitted therein, and after putting the flexible tube in a constant temperature bath at the melting temperature of the fusion bonded layer of the fused magnet wire for a predetermined time, it is cooled at normal temperature to solidify the fusion layer again. The fusion bonded layers of the fused magnet wires that were in contact with each other were melted and united. A constraining layer for constraining a magnet wire of a curved shape as it is wound is formed, and by pulling out the flexible tube 4, the coreless coil 1 fixed in a curved shape is formed.SELECTED DRAWING: Figure 5

Description

本発明は、所望の湾曲形状に変形させた空芯コイルを作製する方法、この方法により作製した空芯コイル、この空芯コイルを用いて構成するロゴスキーコイル、このロゴスキーコイルを用いて構成するクランプセンサ、このクランプセンサを用いて構成するクランプ式電流計に関する。   The present invention relates to a method for producing an air-core coil deformed into a desired curved shape, an air-core coil produced by this method, a Rogowski coil configured using this air-core coil, and a configuration using this Rogowski coil The present invention relates to a clamp sensor and a clamp-type ammeter configured using the clamp sensor.

測定対象である一次導体から発生する磁界を検出するために磁性コアを使用せずに交流電流を検出する方法として、ロゴスキーコイルを用いる方法が知られている。ロゴスキーコイルは、一次導体周辺に空芯のコイルを閉環状に設置したもので、一次電流に対応した電圧がコイルの両端に誘起し、この電圧は一次電流の微分波形になっていることから、積分器を通すことで一次側の電流波形を再現できる。このようなロゴスキーコイルを用いて形成したクランプ式電流計が提案されている（例えば、特許文献１を参照）。   As a method for detecting an alternating current without using a magnetic core in order to detect a magnetic field generated from a primary conductor to be measured, a method using a Rogowski coil is known. A Rogowski coil is an air-core coil that is installed in a closed ring around the primary conductor. A voltage corresponding to the primary current is induced at both ends of the coil, and this voltage is a differential waveform of the primary current. The primary current waveform can be reproduced by passing the integrator. A clamp-type ammeter formed using such a Rogowski coil has been proposed (see, for example, Patent Document 1).

特許文献１に記載のクランプ式電流計では、塩化ビニール等の可撓性チューブに巻線を施し、巻線した可撓性チューブを可撓コイル体とし、そのまま円弧状に曲げてクランプセンサの一側カバー部と他側カバー部に実装する構造である。また、巻線後の各コイル両端部には熱収縮チューブを装着し、巻線の両端形状を保護するようになっている。   In the clamp-type ammeter described in Patent Document 1, winding is performed on a flexible tube such as vinyl chloride, and the wound flexible tube is used as a flexible coil body, and is bent as it is into an arc shape to form a clamp sensor. It is the structure mounted in a side cover part and an other side cover part. In addition, heat shrinkable tubes are attached to both ends of each coil after winding to protect the shape of both ends of the winding.

特開平１１−２９５３４９号公報JP 11-295349 A

しかしながら、特許文献１に記載のクランプ式電流計におけるクランプセンサは、可撓性チューブと巻線が一体である可撓コイル体を用いるため、可撓性チューブの両端一杯まで巻線を施す必要があるために、巻線の両端形状を保持するために熱収縮チューブを被着したり、リード線を位置固定したり、煩雑な処理が必要で、作製時間と材料費が増加する要因になっている。   However, since the clamp sensor in the clamp-type ammeter described in Patent Document 1 uses a flexible coil body in which the flexible tube and the winding are integrated, it is necessary to wind the flexible tube to both ends. For this reason, a heat-shrinkable tube is attached to maintain the shape of both ends of the winding, the lead wire is fixed in position, and complicated processing is required, which increases manufacturing time and material costs. Yes.

以上のような問題点に鑑み、本発明は、部品点数の削減と作製時間の短縮が可能な空芯コイルの作製方法の提供を目的とする。併せて、この方法により作製した空芯コイルと、この空芯コイルを用いて構成するロゴスキーコイルと、このロゴスキーコイルを用いて構成するクランプセンサと、このクランプセンサを用いて構成するクランプ式電流計の提供を目的とする。   In view of the above problems, an object of the present invention is to provide a method for producing an air-core coil that can reduce the number of components and the production time. In addition, an air core coil produced by this method, a Rogowski coil configured using this air core coil, a clamp sensor configured using this Rogowski coil, and a clamp type configured using this clamp sensor The purpose is to provide an ammeter.

上記の課題を解決するために、請求項１に係る発明は、耐熱性・耐薬品性が高く低摩擦係数の素材で形成した円筒状外周面を有する可撓性芯材を直線状に固定し、巻線に用いる線材であるマグネットワイヤの最外層に融着層をコーティングしてなる融着マグネットワイヤを前記可撓性芯材の外周面に巻回してコイル体を形成する第１工程と、前記可撓性芯材を所望形状に湾曲させることでコイル体を湾曲させた状態に保持する第２工程と、前記湾曲させた状態のコイル体に対して、融着層を活性化させて一旦溶融させた後に固化させ、固化した融着層によってマグネットワイヤの形状を拘束する拘束層を形成する第３工程と、前記拘束層が形成されて形体固定された空芯コイルから前記可撓性芯材を抜き取る第４工程と、を行うことで、所望の湾曲形状に変形させた空芯コイルを作製することを特徴とする空芯コイルの作製方法である。   In order to solve the above problems, the invention according to claim 1 is to fix a flexible core material having a cylindrical outer peripheral surface made of a material having high heat resistance and chemical resistance and a low coefficient of friction, in a straight line. A first step of forming a coil body by winding a fusion magnet wire formed by coating a fusion layer on the outermost layer of a magnet wire, which is a wire used for winding, around the outer peripheral surface of the flexible core; A second step of holding the coil body in a curved state by bending the flexible core material into a desired shape, and a fusion layer is activated for the curved coil body to temporarily A third step of forming a constraining layer that consolidates after being melted and constrains the shape of the magnet wire by the solidified fusion layer, and the flexible core from the air-core coil in which the constraining layer is formed and fixed in shape The fourth step of extracting the material, A manufacturing method of the air-core coils, characterized in that to produce the air-core coil is deformed into a curved shape.

また、請求項２に係る発明は、前記請求項１に記載の空芯コイルの作製方法により作製してなる空芯コイルである。   The invention according to claim 2 is an air core coil manufactured by the method for manufacturing an air core coil according to claim 1.

また、請求項３に係る発明は、前記請求項２に記載の空芯コイルを複数組み合わせて閉環状に配置することにより構成したロゴスキーコイルである。   The invention according to claim 3 is a Rogowski coil configured by combining a plurality of the air-core coils according to claim 2 and arranging them in a closed ring shape.

また、請求項４に係る発明は、前記請求項３に記載のロゴスキーコイルを開閉自在な一対のクランプ腕部に分割配置することにより構成したクランプセンサである。   The invention according to claim 4 is a clamp sensor configured by dividing the Rogowski coil according to claim 3 into a pair of openable and closable clamp arms.

また、請求項５に係る発明は、前記請求項４に記載のクランプセンサにおいて、双方のクランプ腕部にそれぞれ配置される空芯コイルの開閉側端部および基端側端部にそれぞれ絶縁カバーを装着し、各クランプ腕部の開閉側突き合わせ端面と基端側突き合わせ端面にそれぞれ絶縁カバーの突き合わせ外面を露出させ、クランプ腕部の閉止時には、少なくとも開閉側の一対の絶縁カバーの突き合わせ外面が密着して、各クランプ腕部に配置された各空芯コイルの開閉側端部が相互に近接するようにしたことを特徴とする。   According to a fifth aspect of the present invention, in the clamp sensor according to the fourth aspect of the present invention, an insulating cover is provided at each of the open / close side end and the base end side end of the air-core coil respectively disposed on both clamp arm portions. Wear and expose the butt outer surface of the insulation cover to the open / close butt end surface and the base end butt end surface of each clamp arm, and at the time of closing the clamp arm, at least the butt outer surfaces of the pair of insulating covers on the open / close side are in close contact The open / close end portions of the air-core coils arranged in the clamp arm portions are close to each other.

また、請求項６に係る発明は、前記請求項４又は請求項５に記載のクランプセンサを用いて構成したクランプ式電流計である。   Moreover, the invention which concerns on Claim 6 is the clamp type ammeter comprised using the clamp sensor of the said Claim 4 or Claim 5.

本発明に係る空芯コイルの作製方法によれば、部品点数を削減すると共に、作製時間を短縮して、所望の湾曲形状に変形させた空芯コイルを作製できる。   According to the method for producing an air-core coil according to the present invention, it is possible to produce an air-core coil deformed into a desired curved shape while reducing the number of components and the production time.

クランプ式電流計の一部欠截正面図である。It is a partial missing front view of a clamp type ammeter. 空芯コイルの作成方法における第１工程の説明図である。It is explanatory drawing of the 1st process in the preparation method of an air-core coil. 空芯コイルの作成方法における第２工程の説明図である。It is explanatory drawing of the 2nd process in the preparation method of an air-core coil. 空芯コイルの作成方法における第３工程の前段処理説明図である。It is a pre-process explanatory drawing of the 3rd process in the preparation method of an air core coil. 空芯コイルの作成方法における第３工程の後段処理説明図である。It is a back | latter stage process explanatory drawing of the 3rd process in the preparation method of an air-core coil. 空芯コイルの作成方法における第４工程の説明図である。It is explanatory drawing of the 4th process in the preparation method of an air-core coil. 一対の空芯コイルを閉環状に配置して構成するロゴスキーコイルの概略説明図である。It is a schematic explanatory drawing of the Rogowski coil which comprises a pair of air core coils arranged in a closed ring.

以下、本発明の実施形態を、添付図面に基づいて詳細に説明する。   Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

図１は、本発明に係る空芯コイルの作製方法（後に詳述）によって作製した第１空芯コイル１−１と第２空芯コイル１−２を、ロゴスキーコイルを構成する閉環状の配置となるように第１クランプ腕部１１および第２クランプ腕部１２に各々配置したクランプセンサ１０を備えるクランプ式電流計１００の正面図であり、一部欠截してクランプセンサ１０の内部構造を示してある。このクランプセンサ１０からの検出情報を演算処理して計測値を可視表示する機能を設けた計器本体２０には、液晶表示器２１、操作ボタン２２、操作ダイヤル２３等が設けられている。   FIG. 1 shows a first embodiment of a first air core coil 1-1 and a second air core coil 1-2 manufactured by an air core coil manufacturing method (detailed later) according to the present invention. FIG. 3 is a front view of a clamp-type ammeter 100 including clamp sensors 10 disposed on the first clamp arm portion 11 and the second clamp arm portion 12 so as to be disposed, and a part of the clamp-type ammeter 100 is omitted, showing an internal structure of the clamp sensor Is shown. An instrument main body 20 provided with a function of performing a calculation process on detection information from the clamp sensor 10 and displaying a measurement value visually is provided with a liquid crystal display 21, an operation button 22, an operation dial 23, and the like.

クランプセンサ１０の第１クランプ腕部１１と第２クランプ腕部１２は、開閉操作レバー１３を操作することで、基端側に設けた回動軸を始点として所定角度の範囲内で回動するもので、第１，第２クランプ腕部１１，１２の開閉側端部が当着した閉止状態と開閉側端部が離隔した開放状態とに変換可能である。   The first clamp arm portion 11 and the second clamp arm portion 12 of the clamp sensor 10 are rotated within a range of a predetermined angle from the rotation axis provided on the proximal end side by operating the opening / closing operation lever 13. Therefore, it can be converted into a closed state in which the open / close side ends of the first and second clamp arm portions 11 and 12 are attached and an open state in which the open / close side ends are separated.

クランプセンサ１０の閉止状態においては、第１，第２クランプ腕部１１，１２の開閉側突き合わせ端面１１ａ，１２ａおよび基端側突き合わせ端面１１ｂ，１２ｂが互いに当着し、開閉側が若干尖って基端側が滑らかな曲縁となる涙滴形状を呈し、測定導体導入空部１４も涙滴形状となる。加えて、クランプセンサ１０のクランプ閉止状態では、第１，第２クランプ腕部１１，１２に収容され得る湾曲状に形状固定した第１空芯コイル１−１および第２空芯コイル１−２の各開閉側端部１ａ，１ａおよび各基端側端部１ｂ，１ｂが近接状に相対することで、涙滴形状のロゴスキーコイルとなる。なお、第１，第２空芯コイル１−１，１−２は巻線自体が形状固定されているので、開閉側端部１ａおよび基端側端部１ｂに巻き乱れ防止用の結束テープや固定キャップ等の構造は不要である。   In the closed state of the clamp sensor 10, the open / close side butting end surfaces 11a and 12a and the base end butting end surfaces 11b and 12b of the first and second clamp arm portions 11 and 12 are in contact with each other, and the opening and closing sides are slightly sharpened and the base ends A teardrop shape with a smooth curved edge is exhibited, and the measurement conductor introduction cavity 14 also has a teardrop shape. In addition, in the clamp closed state of the clamp sensor 10, the first air core coil 1-1 and the second air core coil 1-2 fixed in a curved shape that can be accommodated in the first and second clamp arm portions 11 and 12. Each of the open / close side end portions 1a, 1a and the base end side end portions 1b, 1b are in close proximity to each other, thereby forming a teardrop-shaped Rogowski coil. Since the windings of the first and second air-core coils 1-1 and 1-2 are fixed in shape, a binding tape for preventing winding disturbance on the open / close side end 1 a and the base end 1 b A structure such as a fixed cap is not necessary.

また、第１，第２空芯コイル１−１，１−２の各開閉側端部１ａ．１ａには開閉側絶縁キャップ２−１，２−２を被せ、第１，第２空芯コイル１−１，１−２の各基端側端部１ｂ．１ｂには基端側絶縁キャップ３−１，３−２を被せた状態で、それぞれ第１，第２クランプ腕部１１，１２に配置し、開閉側絶縁キャップ２−１，２−２の各突き合わせ外面２ａ，２ａが第１，第２クランプ腕部１１，１２の開閉側突き合わせ端面１１ａ，１２ａにそれぞれ露出し、基端側絶縁キャップ３−１，３−２の各突き合わせ外面３ａ，３ａが第１，第２クランプ腕部１１，１２の基端側突き合わせ端面１１ｂ，１２ｂにそれぞれ露出するものとした。なお、第１，第２空芯コイル１−１，１−２の解放側端部１ａおよび基端側端部１ｂへそれぞれ開閉側絶縁キャップ２−１，２−２および基端側絶縁キャップ３−１，３−２を固着しておいても構わない。   Further, the open / close side end portions 1a. 1a is covered with open / close-side insulating caps 2-1 and 2-2, and each base end 1b. 1b is placed on the first and second clamp arm portions 11 and 12, respectively, with the base end side insulating caps 3-1 and 3-2 being covered. The butted outer surfaces 2a and 2a are exposed at the open / close-side butted end surfaces 11a and 12a of the first and second clamp arm portions 11 and 12, respectively, and the butted outer surfaces 3a and 3a of the base end side insulating caps 3-1 and 3-2 are respectively exposed. The base end side butted end surfaces 11b and 12b of the first and second clamp arm portions 11 and 12 are exposed. The open / close side insulating caps 2-1 and 2-2 and the base end side insulating cap 3 are respectively connected to the release side end 1a and the base end side end 1b of the first and second air-core coils 1-1 and 1-2. -1, 3-2 may be fixed.

そして、クランプセンサ１０の閉止状態においては、開閉側絶縁キャップ２−１の突き合わせ外面２ａと開閉側絶縁キャップ２−２の突き合わせ外面２ａとが当着し、基端側絶縁キャップ３−１の突き合わせ外面３ａと基端側絶縁キャップ３−２の突き合わせ外面３ａとが当着（もしくは近接）した状態となるので、開閉側絶縁キャップ２−１のコイル当着内面２ｂに開閉側端部１ａが当着している第１空芯コイル１−１と開閉側絶縁キャップ２−２のコイル当着内面２ｂに開閉側端部１ａが当着している第２空芯コイル１−２とは、開閉側絶縁キャップ２−１，２−２の厚さ程度の空隙を介して相対することとなり、基端側絶縁キャップ３−１のコイル当着内面３ｂに基端側端部１ｂが当着している第１空芯コイル１−１と基端側絶縁キャップ３−２のコイル当着内面３ｂに基端側端部１ｂが当着している第２空芯コイル１−２とは、基端側絶縁キャップ３−１，３−２の厚さ程度の空隙を介して相対することとなる。   In the closed state of the clamp sensor 10, the abutting outer surface 2a of the open / close side insulating cap 2-1 and the abutting outer surface 2a of the opening / closing side insulating cap 2-2 are in contact with each other, and the proximal end insulating cap 3-1 is abutted. Since the outer surface 3a and the abutting outer surface 3a of the base end side insulating cap 3-2 are in contact (or close proximity), the opening / closing side end portion 1a is in contact with the coil contact inner surface 2b of the opening / closing side insulating cap 2-1. The first air-core coil 1-1 that is attached and the second air-core coil 1-2 that is attached to the coil contact inner surface 2b of the open / close side insulation cap 2-2 are opened and closed. The side end caps 2-1 and 2-2 face each other through a gap of about the thickness, and the base end side end 1b is attached to the coil attachment inner surface 3b of the base end side insulation cap 3-1. First air-core coil 1-1 and proximal insulation cap The second air-core coil 1-2 in which the proximal end 1b is attached to the coil attachment inner surface 3b of 3-2 is about the thickness of the proximal insulation caps 3-1 and 3-2. It will be opposed through the gap.

したがって、クランプセンサ１０の閉止状態においては、第１空芯コイル１−１および第２空芯コイル１−２を閉環状に配置したロゴスキーコイルの環内ギャップを極めて小さくすることができ、外乱ノイズの影響を受け難く高精度の計測値を得ることができる。   Therefore, in the closed state of the clamp sensor 10, the intra-ring gap of the Rogowski coil in which the first air core coil 1-1 and the second air core coil 1-2 are arranged in a closed ring shape can be made extremely small. It is possible to obtain highly accurate measurement values that are not easily affected by noise.

なお、第１，第２空芯コイル１−１，１−２は、湾曲状に固定され、外力を加えなくても湾曲形状を保持するものであるから、第１，第２クランプ腕部１１，１２内に第１，第２空芯コイル１−１，１−２を湾曲状に保持する特別な構造を設ける必要はなく、例えば、開閉側絶縁キャップ２−１，２−２および基端側絶縁キャップ３−１，３−２を位置決めする構造を第１，第２クランプ腕部１１，１２内に設けておくだけで、第１，第２クランプ腕部１１，１２内の適正位置に第１，第２空芯コイル１−１，１−２を装着することができるので、クランプセンサ１０の組み立て作業の簡易化・効率化を図れる。   Since the first and second air-core coils 1-1 and 1-2 are fixed in a curved shape and hold the curved shape without applying an external force, the first and second clamp arm portions 11 are used. , 12 is not required to be provided with a special structure for holding the first and second air-core coils 1-1 and 1-2 in a curved shape. For example, the open / close side insulating caps 2-1 and 2-2 and the base end By simply providing a structure for positioning the side insulating caps 3-1 and 3-2 in the first and second clamp arm portions 11 and 12, the structure can be placed at an appropriate position in the first and second clamp arm portions 11 and 12. Since the first and second air-core coils 1-1 and 1-2 can be mounted, the assembly work of the clamp sensor 10 can be simplified and made more efficient.

また、第１，第２クランプ腕部１１，１２内には、第１，第２空芯コイル１−１，１−２の湾曲状周面の凸側から凹側へ押圧するスポンジ等の弾性押圧手段１１ｃ，１２ｃを設けることで、第１，第２空芯コイル１−１，１−２の開閉側端部１ａ，１ａを開閉側絶縁キャップ２−１，２−２のコイル当着内面２ｂ，２ｂに、基端側端部１ｂ，１ｂを基端側絶縁キャップ３−１，３−２のコイル当着内面３ｂ，３ｂにそれぞれガタつきなく当着させることができる。   Further, in the first and second clamp arm portions 11 and 12, there is elasticity such as sponge that presses from the convex side to the concave side of the curved peripheral surfaces of the first and second air-core coils 1-1 and 1-2. By providing the pressing means 11c, 12c, the open / close side end portions 1a, 1a of the first and second air-core coils 1-1, 1-2 are connected to the coil contact inner surfaces of the open / close side insulating caps 2-1, 2-2. 2b and 2b can be attached to the coil contact inner surfaces 3b and 3b of the base end side insulating caps 3-1 and 3-2 without rattling, respectively.

さらに、弾性押圧手段１１ｃ，１２ｃによって、開閉側絶縁キャップ２−１，２−２の各突き合わせ外面２ａを第１，第２クランプ腕部１１，１２の開閉側突き合わせ端面１１ａ，１２ａから突出させる付勢力、および基端側絶縁キャップ３−１，３−２の各突き合わせ外面３ａを第１，第２クランプ腕部１１，１２の基端側突き合わせ端面１１ｂ，１２ｂから突出させる付勢力を与えることができ、開閉側絶縁キャップ２−１，２−２の各突き合わせ外面２ａ同士の密着状態ならびに基端側絶縁キャップ３−１，３−２の各突き合わせ外面３ａ同士の密着状態を良好にすることができる。   Further, the elastic pressing means 11c and 12c are used to project the respective butted outer surfaces 2a of the opening and closing side insulating caps 2-1 and 2-2 from the opening and closing side butting end surfaces 11a and 12a of the first and second clamp arm portions 11 and 12, respectively. Applying a force and a biasing force for projecting the abutting outer surfaces 3a of the base end side insulating caps 3-1 and 3-2 from the base end side butting end surfaces 11b and 12b of the first and second clamp arm portions 11 and 12 are given. It is possible to improve the close contact state between the butted outer surfaces 2a of the open / close insulating caps 2-1 and 2-2 and the close contact state between the butted outer surfaces 3a of the proximal end insulating caps 3-1 and 3-2. it can.

なお、第１，第２空芯コイル１−１，１−２の開閉側端部１ａ，１ａと基端側端部１ｂ，１ｂが共に近接した状態となるように、開閉側絶縁キャップ２−１，２−２の突き合わせ外面２ａ同士および基端側絶縁キャップ３−１，３−２の突き合わせ外面３ａ同士が密着し、開閉側も基端側も第１，第２空芯コイル１−１，１−２のギャップ間隔を最小に抑制することが好ましいが、開閉側絶縁キャップ２−１，２−２の各突き合わせ外面２ａ同士を確実に密着させるために、敢えて基端側絶縁キャップ３−１，３−２の各突き合わせ外面３ａ同士が当接しないように調整しても構わない。   The open / close side insulating cap 2- is arranged so that the open / close side end portions 1a, 1a and the base end side end portions 1b, 1b of the first and second air-core coils 1-1, 1-2 are close to each other. The butted outer surfaces 2a of 1 and 2-2 and the butted outer surfaces 3a of the base end side insulating caps 3-1 and 3-2 are in close contact with each other, and the first and second air-core coils 1-1 on both the open / close side and the base end side. , 1-2 is preferably minimized, but in order to ensure that the butted outer surfaces 2a of the open / close side insulating caps 2-1 and 2-2 are in close contact with each other, the base end side insulating cap 3- You may adjust so that each butt | matching outer surface 3a of 1 and 3-2 may not contact | abut.

一方、クランプセンサ１０の開放状態においては、第１，第２クランプ腕部１１，１２の開閉側突き合わせ端面１１ａ，１２ａが大きく離隔し、第１，第２空芯コイル１−１，１−２はロゴスキーコイルとして機能しないが、測定導体導入空部１４へ測定導体を招じ入れたり、逆に測定導体を抜き出したりできる。   On the other hand, in the open state of the clamp sensor 10, the open / close-side butted end surfaces 11a and 12a of the first and second clamp arm portions 11 and 12 are greatly separated, and the first and second air-core coils 1-1 and 1-2. Does not function as a Rogowski coil, but it can invite a measurement conductor into the measurement conductor introduction space 14 or extract the measurement conductor.

以上説明したクランプ式電流計１００のクランプセンサ１０に用いる第１空芯コイル１−１と第２空芯コイル１−２、開閉側絶縁キャップ２−１と開閉側絶縁キャップ２−２、基端側絶縁キャップ３−１と基端側絶縁キャップ３−２は、何れも同一のものを用いており、クランプセンサ１０の第１クランプ腕部１１に設けるものと第２クランプ腕部１２に設けるものとして区別するために呼び分けた。特に区別する必要が無い場合は、それぞれ空芯コイル１、開閉側絶縁キャップ２、基端側絶縁キャップ３と呼ぶ。   The first air core coil 1-1 and the second air core coil 1-2 used for the clamp sensor 10 of the clamp type ammeter 100 described above, the open / close side insulating cap 2-1 and the open / close side insulating cap 2-2, the base end Both the side insulating cap 3-1 and the base end side insulating cap 3-2 are the same, and are provided on the first clamp arm portion 11 and the second clamp arm portion 12 of the clamp sensor 10. Called to distinguish as. When there is no need to distinguish between them, they are referred to as an air-core coil 1, an open / close insulating cap 2, and a proximal insulating cap 3, respectively.

次に、上述した空芯コイル１の作製方法を図２〜図６に基づいて説明する。   Next, the manufacturing method of the air-core coil 1 mentioned above is demonstrated based on FIGS.

まず、耐熱性・耐薬品性が高く低摩擦係数の素材（例えば、フッ素樹脂）で形成した円筒状外周面を有する可撓性芯材である可撓性チューブ４を用意する。可撓性チューブ４は、目的とする空芯コイル１の内径にほぼ等しい外周面４ａを備えると共に、目的とする空芯コイル１を湾曲させずにまっすぐ伸ばした状態の長さよりも適宜長いものである。また、可撓性チューブ４の中空孔４ｂに直線状の金属棒５を貫通させることで可撓性チューブ４を直線状に固定する。かくすれば、剛性のある金属棒５を回転軸として軸回転式の巻線機にセットすることができるので、巻線機によって融着マグネットワイヤ６を可撓性チューブ４の外周面４ａに単層もしくは複層に効率よく巻回してゆき、コイル体６１を形成できる。その後、コイル体６１が形成された可撓性チューブ４を巻線機から外して金属棒５を抜き取る（第１工程を示す図２（ａ）〜（ｃ）を参照）。   First, a flexible tube 4 that is a flexible core material having a cylindrical outer peripheral surface formed of a material having high heat resistance and chemical resistance and a low friction coefficient (for example, a fluororesin) is prepared. The flexible tube 4 includes an outer peripheral surface 4a that is substantially equal to the inner diameter of the target air-core coil 1, and is appropriately longer than the length of the target air-core coil 1 that is straightened without being bent. . Further, the flexible tube 4 is fixed in a straight line by passing the straight metal rod 5 through the hollow hole 4 b of the flexible tube 4. In this way, since the rigid metal rod 5 can be set in the shaft-rotating type winding machine using the rotating shaft as a rotating shaft, the fused magnet wire 6 is simply attached to the outer peripheral surface 4a of the flexible tube 4 by the winding machine. The coil body 61 can be formed by efficiently winding the layers or layers. Thereafter, the flexible tube 4 on which the coil body 61 is formed is removed from the winding machine, and the metal rod 5 is extracted (see FIGS. 2A to 2C showing the first step).

上記融着マグナットワイヤ６は、巻線に用いるマグネットワイヤ６ａ（例えば、導体線６ａ１の外周に薄いエナメル層６ａ２を形成したエナメル線）の最外層に融着層６ｂをコーティングしたものである（図２（ｂ）のＩＩｄ−ＩＩｄ拡大断面を示す図２（ｄ）を参照）。なお、融着層６ｂは、活性化条件となっている熱や溶剤により活性化させることで溶融し、活性化条件を解消することで再び固化するものである。よって、活性化条件（本実施形態で用いる融着マグネットワイヤ６の活性化条件は加熱とする）を加えていないコイル体６１は形状固定されておらず、可撓性チューブ４から抜くとバラバラになってしまう。また、コイル体６１の巻き始めを第１引出線６２ａ、巻き終わりを第２引出線６２ｂとして、コイル体６１から適宜長さだけ残しておく。   The fused magnut wire 6 is obtained by coating the outermost layer of a magnet wire 6a (for example, an enameled wire in which a thin enamel layer 6a2 is formed on the outer periphery of a conductor wire 6a1) used for a winding with a fusion layer 6b (see FIG. FIG. 2 (d) showing an enlarged section of IId-IId of 2 (b). The fusion layer 6b is melted by being activated by heat or a solvent which is an activation condition, and solidified again by eliminating the activation condition. Therefore, the coil body 61 to which the activation condition (the activation condition of the fused magnet wire 6 used in the present embodiment is heating) is not fixed, and when the coil body 61 is pulled out from the flexible tube 4, it is disjoint. turn into. Further, the coil body 61 is left with an appropriate length from the coil body 61 with the first lead wire 62a as the winding start and the second lead wire 62b as the winding end.

上記のようにしてコイル体６１が形成された可撓性チューブ４を、図３（ａ）に示すように、治具７の保形溝７１に嵌め入れる。保形溝７１は、目的とする空芯コイル１の湾曲形状に沿ったものであり、可撓性チューブ４を撓ませながら保形溝７１に嵌め入れることで、コイル体６１が目的とする空芯コイル１と同じ湾曲形状に撓むこととなる。このとき、コイル体６１は保形溝７１によって湾曲形状に保持されているだけであり、図３（ａ）のＩＩＩｂ−ＩＩＩｂ拡大断面を示す図３（ｂ）のように、融着マグネットワイヤ６の融着層６ｂは個別のままであるから、形体固定されているわけではない。なお、第１，第２引出線６２ａ，６２ｂが空芯コイル１の基端側となるように、コイル体６１が形成された可撓性チューブ４を保形溝７１に嵌め込む向きを定める。   The flexible tube 4 on which the coil body 61 is formed as described above is fitted into the shape retaining groove 71 of the jig 7 as shown in FIG. The shape-retaining groove 71 is along the curved shape of the target air-core coil 1, and the coil body 61 is made to have the desired empty space by fitting the flexible tube 4 into the shape-retaining groove 71 while being bent. It will be bent into the same curved shape as the core coil 1. At this time, the coil body 61 is only held in a curved shape by the shape-retaining groove 71, and the fused magnet wire 6 is shown in FIG. 3 (b) showing an enlarged section taken along IIIb-IIIb in FIG. 3 (a). Since the fusion layer 6b of the present invention remains individual, it is not necessarily fixed in shape. The direction in which the flexible tube 4 on which the coil body 61 is formed is fitted into the shape retaining groove 71 is determined so that the first and second lead wires 62a and 62b are on the proximal end side of the air-core coil 1.

次いで、図４に示すように、コイル体６１が形成された可撓性チューブ４を保形溝７１へ嵌め入れた治具７を恒温槽８に入れ、融着層６ｂが活性化する温度で必要な時間だけ加熱する。なお、治具７は、恒温槽８での加熱に耐えられるように、金属または耐熱樹脂（例えば、１２０℃〜１８０℃程度の耐熱性）を用いて形成しておく。   Next, as shown in FIG. 4, the jig 7 in which the flexible tube 4 in which the coil body 61 is formed is fitted into the shape retaining groove 71 is placed in the constant temperature bath 8, and at a temperature at which the fusion layer 6 b is activated. Heat for the required time. The jig 7 is formed using a metal or a heat-resistant resin (for example, heat resistance of about 120 ° C. to 180 ° C.) so that it can withstand the heating in the thermostat 8.

上記のように恒温槽８内でコイル体６１を加熱すると、融着層６ｂが活性化して溶融し、接触している融着層６ｂ同士が融着して一体となる。その後、常温で自然冷却させると、融着した状態で固まる。すなわち、図５（ａ）のＶｂ−Ｖｂ拡大断面を示す図５（ｂ）のように、接触している融着層６ｂ同士が融着して一体化した拘束層６ｂ′が形成されることで、マグネットワイヤ６ａは治具７の保形溝７１に入れられた状態に拘束され、湾曲状に形体固定された空芯コイル１ができる。   When the coil body 61 is heated in the thermostat 8 as described above, the fused layer 6b is activated and melted, and the fused layers 6b in contact with each other are fused and integrated. Then, when it is naturally cooled at room temperature, it solidifies in a fused state. That is, as shown in FIG. 5B showing an enlarged cross section of Vb-Vb in FIG. 5A, the constraining layer 6b ′ in which the fused layers 6b in contact with each other are fused and formed is formed. Thus, the magnet wire 6a is constrained to be placed in the shape retaining groove 71 of the jig 7, and the air core coil 1 fixed in a curved shape can be formed.

図３〜図５にて説明したように、融着マグネットワイヤ６の融着層６ｂを活性化させた後に固化させて拘束層６ｂ′を形成する第３工程を行えば、湾曲状に形体固定された空芯コイル１ができるので、図６（ａ），（ｂ）に示すように、空芯コイル１から可撓性チューブ４を抜き取る第４工程を行って、湾曲形状の空芯コイル１を得ることができる。   As described with reference to FIGS. 3 to 5, if the third step of forming the constraining layer 6b ′ by activating the fused layer 6b of the fused magnet wire 6 and forming the constrained layer 6b ′ is performed, the shape is fixed in a curved shape. As shown in FIGS. 6A and 6B, the fourth step of extracting the flexible tube 4 from the air core coil 1 is performed, so that the air core coil 1 having a curved shape is formed. Can be obtained.

なお、可撓性チューブ４をフッ素樹脂等の低摩擦係数の素材にて形成するか、少なくとも可撓性チューブ４の外周面４ａをフッ素樹脂等の低摩擦係数の素材でコーティングすることで、融着層６ｂが溶融して固化したとき、拘束層６ｂ′が可撓性チューブ４の外周面４ａに融着することを防げるので、空芯コイル１から可撓性チューブ４を容易に抜き取ることができる。   The flexible tube 4 is made of a material having a low friction coefficient such as a fluororesin, or at least the outer peripheral surface 4a of the flexible tube 4 is coated with a material having a low friction coefficient such as a fluororesin. Since the constraining layer 6b 'can be prevented from being fused to the outer peripheral surface 4a of the flexible tube 4 when the wearing layer 6b is melted and solidified, the flexible tube 4 can be easily pulled out from the air-core coil 1. it can.

上記のように作製した空芯コイル１は、所望の湾曲形状に形体固定されているので、巻線端部（開閉側端部１ａおよび基端側端部１ｂ）で線材が解けるのを防止する対策が必要ない。すなわち、巻線端部の解け対策に使用していた熱収縮チューブ等が不要になり、材料費削減の効果が有る。また、融着マグネットワイヤ６の巻き始めである第１引出線６２ａと巻き終わりである第２引出線６２ｂを共に基端側（基端側端部１ｂ側）に配置することで、空芯コイル１の中空部に線材を通す手間を省くことができ、製造工程を簡略化できる。しかも、上記のように作製した空芯コイル１は、形体固定のために可撓性チューブ７を必要とせず、コイル内は中空になっているので、空芯コイル１を閉環状に配置して構成したロゴスキーコイルとしては、可撓性チューブ７が介在している場合と比較して中空部の透磁率が安定することとなり、測定精度の向上を期せる。   Since the air-core coil 1 manufactured as described above is fixed in a desired curved shape, the wire rod is prevented from being unwound at the winding end portions (opening / closing side end portion 1a and base end side end portion 1b). No action is necessary. That is, the heat-shrinkable tube or the like that has been used as a measure for unwinding the winding end is not necessary, and the material cost can be reduced. Also, the first lead wire 62a that is the start of winding of the fusion magnet wire 6 and the second lead wire 62b that is the end of winding are both arranged on the base end side (base end side end portion 1b side), so that the air core coil The labor of passing the wire through the hollow portion of 1 can be saved, and the manufacturing process can be simplified. Moreover, the air-core coil 1 produced as described above does not require the flexible tube 7 for fixing the shape, and the inside of the coil is hollow. Therefore, the air-core coil 1 is arranged in a closed ring shape. In the constructed Rogowski coil, the magnetic permeability of the hollow portion is stabilized as compared with the case where the flexible tube 7 is interposed, and the measurement accuracy can be improved.

また、上記のように作製した空芯コイル１をクランプセンサ１０に用いる場合、巻き始めである第１引出線６２ａと巻き終わりである第２引出線６２ｂに、それぞれ耐熱ビニール線を半田付けして第１リード線９ａと第２リード線９ｂを形成する（図７（ａ）参照）。なお、第１，第２リード線９ａ，９ｂを形成した空芯コイル１の基端側端部１ｂには、基端側絶縁キャップ３を被せるので、例えば、結束テープ９ｃにて第１，第２リード線９ａ，９ｂを束ね、基端側絶縁キャップ３の開口側へ導出させると、第１，第２リード線９ａ，９ｂの取り回しが容易となる。   Further, when the air core coil 1 manufactured as described above is used for the clamp sensor 10, a heat-resistant vinyl wire is soldered to the first lead wire 62a that is the start of winding and the second lead wire 62b that is the end of winding. First lead wire 9a and second lead wire 9b are formed (see FIG. 7A). In addition, since the base end side end part 1b of the air-core coil 1 in which the first and second lead wires 9a and 9b are formed is covered with the base end side insulating cap 3, for example, the first and first tapes are bound by the binding tape 9c. When the two lead wires 9a and 9b are bundled and led out toward the opening side of the base end side insulating cap 3, the first and second lead wires 9a and 9b can be easily routed.

そして、開閉側端部１ａに開閉側絶縁キャップ２を、基端側端部１ｂに基端側絶縁キャップ３を取り付けた空芯コイル１を対向状に配置して構成するロゴスキーコイルにおいては、図７（ｂ）に示すように、第１空芯コイル１−１の開閉側端部１ａと第２空芯コイル１−２の開閉側端部１ａとの離隔距離は、その間に介在する開閉側絶縁キャップ２−１の厚さｄ（突き合わせ外面２ａとコイル当着内面２ｂの間隔）と開閉側絶縁キャップ２−２の厚さｄとの和、すなわち２ｄであり、極めて薄くすることができる。   In the Rogowski coil configured by arranging the air-core coil 1 with the open / close side insulating cap 2 attached to the open / close side end 1a and the base end side insulating cap 3 attached to the base end side end 1b so as to face each other, As shown in FIG. 7 (b), the separation distance between the open / close side end 1a of the first air core coil 1-1 and the open / close side end 1a of the second air core coil 1-2 is the open / close interposed therebetween. The sum of the thickness d of the side insulating cap 2-1 (the distance between the butt outer surface 2a and the coil contact inner surface 2b) and the thickness d of the open / close side insulating cap 2-2, that is, 2d, can be made extremely thin. .

なお、第１空芯コイル１−１の基端側端部１ｂと第２空芯コイル１−２の基端側端部１ｂとの離隔距離は、その間に介在する基端側絶縁キャップ３−１の厚さｄ′（突き合わせ外面３ａとコイル当着内面３ｂの間隔）と基端側絶縁キャップ３−２の厚さｄ′との和、すなわち２ｄ′とすることも可能であるが、開閉側絶縁キャップ２−１と開閉側絶縁キャップ２−２が密着した状態で基端側絶縁キャップ３−１と基端側絶縁キャップ３−２も同時に密着した状態とするように、高精度の位置合わせを行うことは困難であるから、開閉側絶縁キャップ２−１と開閉側絶縁キャップ２−２との密着状態を優先し、基端側絶縁キャップ３−１と基端側絶縁キャップ３−２との間には若干の隙間ができるようにしても構わない。   In addition, the separation distance between the proximal end 1b of the first air core coil 1-1 and the proximal end 1b of the second air core 1-2 is the proximal insulating cap 3 interposed therebetween. 1 is the sum of the thickness d '(the distance between the butt outer surface 3a and the coil contact inner surface 3b) and the thickness d' of the proximal insulating cap 3-2, ie, 2d '. A highly accurate position so that the base end side insulating cap 3-1 and the base end side insulating cap 3-2 are in close contact with each other while the side insulating cap 2-1 and the open / close side insulating cap 2-2 are in close contact with each other. Since it is difficult to perform the alignment, priority is given to the close contact state between the open / close side insulating cap 2-1 and the open / close side insulating cap 2-2, and the base end side insulating cap 3-1 and the base end side insulating cap 3-2 are given priority. A slight gap may be formed between the two.

以上、本発明に係る空芯コイルの作製方法、該方法により作製した空芯コイル、該空芯コイルを用いたロゴスキーコイル、該ロゴスキーコイルを用いたクランプセンサ、該クランプセンサを用いたクランプ式電流計の実施形態を添付図面に基づいて説明したが、本発明は、これらの実施形態に限定されるものではなく、特許請求の範囲に記載の構成を変更しない範囲で、公知既存の等価な技術手段を転用することにより実施しても構わない。   As described above, an air core coil manufacturing method according to the present invention, an air core coil manufactured by the method, a Rogowski coil using the air core coil, a clamp sensor using the Rogowski coil, and a clamp using the clamp sensor Although the embodiments of the type ammeter have been described with reference to the accompanying drawings, the present invention is not limited to these embodiments, and the known equivalents are within the scope not changing the configuration described in the claims. It may be carried out by diverting various technical means.

１−１ 第１空芯コイル
１−２ 第２空芯コイル
１ａ 開閉側端部
１ｂ 基端側端部
２−１ 開閉側絶縁キャップ
２−２ 開閉側絶縁キャップ
２ａ 突き合わせ外面
２ｂ コイル当着内面
３−１ 基端側絶縁キャップ
３−２ 基端側絶縁キャップ
３ａ 突き合わせ外面
３ｂ コイル当着内面
４ 可撓性チューブ
５ 金属棒
６ 融着マグネットワイヤ
６ａ マグネットワイヤ
６ｂ 融着層
６ｂ′ 拘束層
６１ コイル体
６２ａ 第１引出線（巻き始め）
６２ｂ 第２引出線（巻き終わり）
７ 治具
７１ 保形溝
８ 恒温槽
９ａ 第１リード線（第１引出線側）
９ｂ 第２リード線（第２引出線側）
１０ クランプセンサ
１１ 第１クランプ腕部
１１ａ 開閉側突き合わせ端面
１１ｂ 基端側突き合わせ端面
１２ 第２クランプ腕部
１２ａ 開閉側突き合わせ端面
１２ｂ 基端側突き合わせ端面
２０ 計器本体
１００ クランプ式電流計 1-1 First Air Core Coil 1-2 Second Air Core Coil 1a Open / Close Side End 1b Base End Side End 2-1 Open / Close Side Insulation Cap 2-2 Open / Close Side Insulation Cap 2a Butt Outer Surface 2b Coil Attached Inner Surface 3 -1 Base end side insulating cap 3-2 Base end side insulating cap 3a Butt outer surface 3b Coil abutting inner surface 4 Flexible tube 5 Metal rod 6 Fused magnet wire 6a Magnet wire 6b Fused layer 6b 'Restrained layer 61 Coil body 62a First leader (start of winding)
62b Second leader (end of winding)
7 Jig 71 Shape retention groove 8 Constant temperature bath 9a First lead wire (first lead wire side)
9b Second lead wire (second lead wire side)
DESCRIPTION OF SYMBOLS 10 Clamp sensor 11 1st clamp arm part 11a Opening / closing side butting end surface 11b Base end side butting end surface 12 2nd clamp arm part 12a Opening and closing side butting end surface 12b Base end side butting end surface 20 Instrument main body 100 Clamp type ammeter

Claims (6)

耐熱性・耐薬品性が高く低摩擦係数の素材で形成した円筒状外周面を有する可撓性芯材を直線状に固定し、巻線に用いる線材であるマグネットワイヤの最外層に融着層をコーティングしてなる融着マグネットワイヤを前記可撓性芯材の外周面に巻回してコイル体を形成する第１工程と、
前記可撓性芯材を所望形状に湾曲させることでコイル体を湾曲させた状態に保持する第２工程と、
前記湾曲させた状態のコイル体に対して、融着層を活性化させて一旦溶融させた後に固化させ、固化した融着層によってマグネットワイヤの形状を拘束する拘束層を形成する第３工程と、
前記拘束層が形成されて形体固定された空芯コイルから前記可撓性芯材を抜き取る第４工程と、
を行うことで、所望の湾曲形状に変形させた空芯コイルを作製することを特徴とする空芯コイルの作製方法。 A flexible core with a cylindrical outer peripheral surface made of a material with high heat resistance and chemical resistance and a low friction coefficient is fixed in a straight line, and a fusion layer is formed on the outermost layer of the magnet wire, which is a wire used for winding. A first step of forming a coil body by winding a fusion magnet wire formed by coating the outer periphery of the flexible core;
A second step of holding the coil body in a curved state by bending the flexible core material into a desired shape;
A third step of forming a constraining layer that constrains the shape of the magnet wire with the solidified fusion layer by activating and fusing the fusion layer once with respect to the bent coil body; ,
A fourth step of extracting the flexible core from the air core coil in which the constraining layer is formed and fixed in shape;
To produce an air-core coil deformed into a desired curved shape. 請求項１に記載の空芯コイルの作製方法により作製してなる空芯コイル。   An air-core coil produced by the method for producing an air-core coil according to claim 1. 請求項２に記載の空芯コイルを複数組み合わせて閉環状に配置することにより構成したロゴスキーコイル。   A Rogowski coil configured by combining a plurality of the air-core coils according to claim 2 and arranging them in a closed ring shape. 請求項３に記載のロゴスキーコイルを開閉自在な一対のクランプ腕部に分割配置することにより構成したクランプセンサ。   A clamp sensor configured by dividing the Rogowski coil according to claim 3 into a pair of freely openable and closable clamp arms. 双方のクランプ腕部にそれぞれ配置される空芯コイルの開閉側端部および基端側端部にそれぞれ絶縁カバーを装着し、各クランプ腕部の開閉側突き合わせ端面と基端側突き合わせ端面にそれぞれ絶縁カバーの突き合わせ外面を露出させ、クランプ腕部の閉止時には、少なくとも開閉側の一対の絶縁カバーの突き合わせ外面が密着して、各クランプ腕部に配置された各空芯コイルの開閉側端部が相互に近接するようにしたことを特徴とする請求項４に記載のクランプセンサ。   Insulation covers are attached to the open / close end and proximal end of the air-core coil that is placed on both clamp arms, respectively, and insulated on the open / close butt end face and proximal butt end face of each clamp arm. Expose the butt outer surface of the cover, and when closing the clamp arm, at least the butt outer surfaces of the pair of insulating covers on the open / close side are in close contact, and the open / close end of each air-core coil disposed on each clamp arm is mutually The clamp sensor according to claim 4, wherein the clamp sensor is close to the sensor. 請求項４又は請求項５に記載のクランプセンサを用いて構成したクランプ式電流計。   A clamp-type ammeter configured using the clamp sensor according to claim 4.
JP2015102326A 2015-05-20 2015-05-20 Air core coil manufacturing method, air core coil, Rogowski coil, clamp sensor and clamp type ammeter Active JP6240869B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2015102326A JP6240869B2 (en) 2015-05-20 2015-05-20 Air core coil manufacturing method, air core coil, Rogowski coil, clamp sensor and clamp type ammeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2015102326A JP6240869B2 (en) 2015-05-20 2015-05-20 Air core coil manufacturing method, air core coil, Rogowski coil, clamp sensor and clamp type ammeter

Publications (2)

Publication Number Publication Date
JP2016219583A true JP2016219583A (en) 2016-12-22
JP6240869B2 JP6240869B2 (en) 2017-12-06

Family

ID=57581967

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2015102326A Active JP6240869B2 (en) 2015-05-20 2015-05-20 Air core coil manufacturing method, air core coil, Rogowski coil, clamp sensor and clamp type ammeter

Country Status (1)

Country Link
JP (1) JP6240869B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112259316A (en) * 2020-09-30 2021-01-22 重庆普尔萨科技有限公司 Forced air cooling high-strength electromagnetic forming coil

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04222452A (en) * 1990-12-26 1992-08-12 Totoku Electric Co Ltd Fabrication of coil
JPH11295348A (en) * 1998-04-09 1999-10-29 Hioki Ee Corp Current sensor structure for clamp sensor
JP2002050516A (en) * 2000-08-04 2002-02-15 Totoku Electric Co Ltd Method of molding air-core coil
JP2005049154A (en) * 2003-07-31 2005-02-24 Seiko Epson Corp Built-in aerial type electronic timepiece
JP2006295106A (en) * 2005-07-21 2006-10-26 Selco Co Ltd Air core coil and manufacturing method thereof
JP2007309732A (en) * 2006-05-17 2007-11-29 Hioki Ee Corp Magnetic sensor and current measurement apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04222452A (en) * 1990-12-26 1992-08-12 Totoku Electric Co Ltd Fabrication of coil
JPH11295348A (en) * 1998-04-09 1999-10-29 Hioki Ee Corp Current sensor structure for clamp sensor
JP2002050516A (en) * 2000-08-04 2002-02-15 Totoku Electric Co Ltd Method of molding air-core coil
JP2005049154A (en) * 2003-07-31 2005-02-24 Seiko Epson Corp Built-in aerial type electronic timepiece
JP2006295106A (en) * 2005-07-21 2006-10-26 Selco Co Ltd Air core coil and manufacturing method thereof
JP2007309732A (en) * 2006-05-17 2007-11-29 Hioki Ee Corp Magnetic sensor and current measurement apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112259316A (en) * 2020-09-30 2021-01-22 重庆普尔萨科技有限公司 Forced air cooling high-strength electromagnetic forming coil

Also Published As

Publication number Publication date
JP6240869B2 (en) 2017-12-06

Similar Documents

Publication Publication Date Title
CN105738675A (en) Holder for saturable magnetic core, holding method and magnetic flux gate current transducer
US20130082560A1 (en) Coreless electromechanical device, mobile unit, robot, and manufacturing method of coreless electromechanical device
JP6009493B2 (en) Resolver
JP2014138544A (en) Temperature measurement apparatus of motor having holding member for holding coil end
JP6240869B2 (en) Air core coil manufacturing method, air core coil, Rogowski coil, clamp sensor and clamp type ammeter
JP4077926B2 (en) Clamp sensor and clamp ammeter
JP6620645B2 (en) Torque sensor
IT8222542A1 (en) MULTILAYER COIL AND MANUFACTURING METHOD OF THE SAME
JP3583671B2 (en) Torque detector
JPWO2015068192A1 (en) Rogowski coil and manufacturing method thereof
JP6338489B2 (en) Sensor component, current sensor and current measuring device
JPS6042628A (en) Torque sensor
JP2009032836A (en) Method of manufacturing multiple coil
JP4129932B2 (en) Current sensor structure for clamp sensor
JP2013213843A (en) Current sensor and method for manufacturing current sensor
JP5646203B2 (en) Current sensor
JP2010266340A (en) Current sensor
US9793771B2 (en) Rotor of an electric motor, with an outer sleeve formed by winding, method for producing such a rotor, and electric motor comprising such a rotor
JPH0783769A (en) Torque sensor and production thereof
JP6175633B2 (en) Rotary type differential transformer
JP2011002348A (en) Magnetic sensor and current measuring device
CN110491651A (en) A kind of mutual inductor flexible coil and preparation method thereof
JP6088413B2 (en) Differential transformer type angle sensor
JP2004219294A (en) Current sensor and manufacturing method thereof
JP5646217B2 (en) Current sensor

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20150520

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20170127

A871 Explanation of circumstances concerning accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A871

Effective date: 20170206

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20170227

A975 Report on accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A971005

Effective date: 20170327

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20170627

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20170825

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20170912

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20171004

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20171004

R150 Certificate of patent or registration of utility model

Ref document number: 6240869

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20171219

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250