JPH048376Y2 - - Google Patents
Info
- Publication number
- JPH048376Y2 JPH048376Y2 JP17113287U JP17113287U JPH048376Y2 JP H048376 Y2 JPH048376 Y2 JP H048376Y2 JP 17113287 U JP17113287 U JP 17113287U JP 17113287 U JP17113287 U JP 17113287U JP H048376 Y2 JPH048376 Y2 JP H048376Y2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- current measuring
- annular
- coil device
- wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000005259 measurement Methods 0.000 claims description 16
- 230000008878 coupling Effects 0.000 claims description 15
- 238000010168 coupling process Methods 0.000 claims description 15
- 238000005859 coupling reaction Methods 0.000 claims description 15
- 229910000906 Bronze Inorganic materials 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- 239000010974 bronze Substances 0.000 claims description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Transformers For Measuring Instruments (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
本考案は、導体電流測定に使用される電流測定
コイル器に関し、特に、溶接機等の二次側に流れ
る交直流大電流値を測定するに好適なトロイダル
コイルを有する電流測定コイル器に関するもので
ある。[Detailed description of the invention] [Industrial field of application] The present invention relates to a current measuring coil device used for measuring conductor current, and in particular for measuring the value of a large AC/DC current flowing through the secondary side of a welding machine, etc. The present invention relates to a current measuring coil device having a toroidal coil suitable for.
［従来の技術］
従来、この種の電流測定コイル器は、第６図及
び第７図に示すように、軟質性可撓材１の回りに
トロイダルコイル２を巻回し、その上に布テープ
等の固定材３を巻き付け、更にチユーブ状ゴム製
外皮４で覆い、両端に結合部材５ａ，５ｂを取付
け、コイルの引き出し線に接続するケーブル６を
延出してなるものである。第８図に示す如く測定
すべき電線７を閉ループ状に囲み、この電流測定
コイル器をその結合部材５ａ，５ｂにて結合せし
め、電線７の電流変化に伴なうトロイダルコイル
２に鎖交する磁束Ｂの変化で誘導される誘導起電
力（ケーブル６に流れる電流）を測定することに
より、電線７に流れる電流値が検出される。[Prior Art] Conventionally, as shown in FIGS. 6 and 7, this type of current measuring coil device has a toroidal coil 2 wound around a soft flexible material 1, and a cloth tape or the like placed on top of the toroidal coil 2. A fixing member 3 is wound around the coil, and a tube-shaped rubber outer sheath 4 is placed around the coil, coupling members 5a and 5b are attached to both ends, and a cable 6 is extended to be connected to the lead wire of the coil. As shown in FIG. 8, the electric wire 7 to be measured is surrounded in a closed loop, and this current measuring coil device is connected by its coupling members 5a and 5b, and linked to the toroidal coil 2 as the electric current of the electric wire 7 changes. By measuring the induced electromotive force (current flowing through the cable 6) induced by changes in the magnetic flux B, the value of the current flowing through the electric wire 7 is detected.
［解決すべき問題点］
しかしながら、上記従来の電流測定コイル器に
あつては、次の問題点がある。[Problems to be Solved] However, the above conventional current measuring coil device has the following problems.
可撓材１の上にトロコイダルコイル２が巻回
されているため、変形自在で可撓性があり過
ぎ、トロコイダルコイル２自体もそれに追従し
て自由に変形屈曲し、そのコイル線材の位置ず
れが起こり易く、耐久性に乏しい。 Since the trochoidal coil 2 is wound on the flexible material 1, it is deformable and has excessive flexibility, and the trochoidal coil 2 itself follows this and deforms and bends freely, changing the position of the coil wire material. Misalignment occurs easily and durability is poor.
第８図に示すように、電線７が水平に延在し
ている場合には、結合部材５ａ，５ｂを結合し
てループの中心に電線７を位置決めし、その上
部を支持することによりセツテイングが完了す
るが、閉ループ状が形成されるものの、重力作
用により非円環状のトロイダルコイルが形成さ
れるため、電線７を中心とする同心円の磁束密
度Ｂがコイル２を部分的に鎖交するだけである
から、電流測定感度が弱く、コイル２の局部的
な屈曲も無視できないので、測定精度が悪く、
また測定の再現性も低いものであつた。 As shown in FIG. 8, when the electric wire 7 extends horizontally, the electric wire 7 can be set by connecting the connecting members 5a and 5b, positioning the electric wire 7 at the center of the loop, and supporting its upper part. Although a closed loop is formed, a non-circular toroidal coil is formed due to gravity, so the concentric magnetic flux density B around the wire 7 only partially links the coil 2. Because of this, the current measurement sensitivity is weak and the local bending of the coil 2 cannot be ignored, so the measurement accuracy is poor.
Furthermore, the reproducibility of measurements was also low.
［考案の目的］
本考案は、上記問題点を解決するものであり、
その目的は、コイル線の位置ずれを防止でき、電
線等の導電体に対する容易なセツテイングが可能
であると共に、測定時においてはほぼ真円の円環
状のトロイダルコイルとなして使用可能な電流測
定コイル器を提供することにある。[Purpose of the invention] The invention solves the above problems,
The purpose of this is to create a current measuring coil that can prevent the position of the coil wire from shifting, allows easy setting on conductors such as electric wires, and can be used as an almost perfectly circular toroidal coil during measurement. It is about providing the equipment.
［問題点の解決手段］
上記問題点を解決するため、本考案に係る電流
測定コイル器は、次の主たる構成要件を有するも
のである。[Means for Solving the Problems] In order to solve the above problems, the current measuring coil device according to the present invention has the following main structural requirements.
開ループの略円環状バネ性芯体を内部に通し
た開ループの円環状軟質部材があること。 There is an open-loop annular soft member with an open-loop substantially annular spring core inserted therein.
ここで「略円環状バネ性芯体」としては、例
えば、燐青銅等の非磁性体バネで形成されてい
る場合が包合される。 Here, the "substantially annular spring core" includes, for example, a core made of a non-magnetic material such as phosphor bronze.
この上に巻回されたトロイダルコイルがある
こと。 There should be a toroidal coil wound on top of this.
該円環状軟質部材の両端に装着され相両端を
衝合離間自在の結合部材があること。 There is a connecting member attached to both ends of the annular soft member so that the opposite ends can be brought into contact with each other and separated.
ここで、一方の「結合部材の内側」には、前
記トロイダルコイルの両引き出し線に並列に接
続する可変抵抗器が固定されている場合も包合
される。 Here, the case where a variable resistor connected in parallel to both lead wires of the toroidal coil is fixed to one "inside of the coupling member" is also included.
［作用］
かかる構成の電流測定コイル器によれば、円環
状バネ性芯体の定形的な形状保持機能によつて、
常態としては全体的になめらかな開ループの円環
状で弾性復元的に保持されるので、円環状軟質部
材自体の変形、局部的な屈曲を防止でき、それ
故、その表面に、巻回されたコイルの線材の相互
位置の変位が僅小であり、線材の位置ずれが起こ
らないことは勿論、開ループの開き部分を介して
電流測定コイル器を電線等に迅速且つ容易に鎖交
させることができるので、セツテイング操作性が
向上し、更に両端の結合部材を結合させ開き部分
を閉じて閉ループ形成を行なつた場合には、ほぼ
真円の変形し難いトロイダルコイルとなすことが
可能で、電線等を中心とした同心円上にトロイダ
ルコイルを訳なく位置決め支持できる故、電流測
定精度の向上を図ることができると共に、測定の
再現性も確約できる。[Function] According to the current measuring coil device having such a configuration, due to the regular shape retention function of the annular spring core,
Normally, it is held elastically in a smooth open-loop annular shape as a whole, so deformation and local bending of the annular soft member itself can be prevented. The displacement of the mutual positions of the wire rods of the coil is very small, and it goes without saying that the wire rods will not shift in position, and the current measuring coil device can be quickly and easily interlinked with the electric wire etc. through the open part of the open loop. This improves the setting operability, and when the connecting members at both ends are connected and the open part is closed to form a closed loop, it is possible to create a toroidal coil that is almost perfectly circular and difficult to deform. Since the toroidal coil can be positioned and supported without any reason on a concentric circle with the center of
［実施例］
次に、本考案の一実施例を図面に基づいて説明
する。[Example] Next, an example of the present invention will be described based on the drawings.
第１図は本考案に係る電流測定コイル器の一実
施例を示す平面図、第２図は同実施例を示す斜視
図、第３図は同実施例を示す断面図である。 FIG. 1 is a plan view showing an embodiment of the current measuring coil device according to the present invention, FIG. 2 is a perspective view of the same embodiment, and FIG. 3 is a sectional view of the same embodiment.
図中、１０は断面長円形のゴム又は軟質プラス
チツク等の円環状軟質部材で、開ループ状に構成
されている。その中心部には断面丸形で燐青銅等
の非磁性体の円環状バネ性芯体１１が挿通されて
いる。この円環状バネ性芯体１１は円環状軟質部
材１０に予め形成された貫通孔に挿通され組付け
られているが、モールド形成により一体化しても
良い。本実施例では円環状軟質部材１０の内径は
約20cmで、開き角度は約30°としてある。円環状
軟質部材１０の周面にはほぼ全長にわたりコイル
線が巻回されており、トロイダルコイル１２が形
成されている。コイル線は、第５図に示すよう
に、円環状軟質部材１０の一端部から他端部にか
けて密に巻回した後逆に他端部から一端部にかけ
て密に巻回されており、両コイル引き出し線１２
ａ，１２ｂが電流計に接続すべきケーブル１３の
芯線と外側線とに接続されている。トロイダルコ
イル１２の上には布テープ１４等の固定材１４が
緩み止めのために巻回されている。また、固定材
１４はチユーブ状ゴム製外皮１５で覆われてい
る。円環状軟質部材１０の両端には非磁性体の結
合部材１６，１７が取付られている。結合部材１
６は円環状軟質部材１０の一端部を内外側から挟
み込む略Ｌ字形の内側挾持具１６ａと外側挾持具
１６ｂとからなり、内側挾持具１６ａは衝合板１
６aaを有し、衝合板１６baにはフツク部材とし
てのボルト１６abが突設されている。外側挾持
具１６ｂは第４図に示すようにケーブル１３を通
す孔１６baと内面に固着された可変抵抗器１６
bbを具備する。可変抵抗器１６bbはトロイダル
コイル１２のコイル引き出し線１２ａ，１２ｂに
対しインピーダンス調整の便のため並列に接続さ
れている。一方の結合部材１７は円環状軟質部材
１０の他端部を内外側から挟み込む略Ｌ字形の内
側挾持具１７ａと外側挾持具１７ｂとからなり、
内側挾持具１７ａは他の結合部材１６ａの衝合板
１６aaに衝合すべき衝合板１７aaを有し、衝合
板１７aaにはボルト１６abと係合すべき掛止孔
（図示せず）が形成されている。 In the figure, reference numeral 10 denotes an annular soft member made of rubber or soft plastic, which has an oval cross section and is configured in an open loop shape. An annular spring core 11 made of a non-magnetic material such as phosphor bronze and having a round cross section is inserted through the center thereof. Although this annular spring core 11 is inserted into a through hole previously formed in the annular soft member 10 and assembled, it may be integrated by molding. In this embodiment, the inner diameter of the annular soft member 10 is approximately 20 cm, and the opening angle is approximately 30°. A coil wire is wound around the circumferential surface of the annular soft member 10 over almost the entire length, forming a toroidal coil 12. As shown in FIG. 5, the coil wire is tightly wound from one end to the other end of the annular soft member 10, and then tightly wound from the other end to one end, so that both coils Lead line 12
a and 12b are connected to the core wire and outer wire of the cable 13 to be connected to the ammeter. A fixing material 14 such as a cloth tape 14 is wound on the toroidal coil 12 to prevent it from loosening. Further, the fixing member 14 is covered with a tubular rubber outer skin 15. Non-magnetic coupling members 16 and 17 are attached to both ends of the annular soft member 10. Connecting member 1
6 consists of a substantially L-shaped inner clamping tool 16a and an outer clamping tool 16b that sandwich one end of the annular soft member 10 from the inside and outside, and the inner clamping tool 16a is attached to the abutting plate 1.
6aa, and a bolt 16ab serving as a hook member is provided protruding from the abutment plate 16ba. As shown in FIG. 4, the outer clamping tool 16b has a hole 16ba through which the cable 13 is passed, and a variable resistor 16 fixed to the inner surface.
Equipped with bb. The variable resistor 16bb is connected in parallel to the coil lead wires 12a and 12b of the toroidal coil 12 for impedance adjustment. One of the coupling members 17 is composed of a substantially L-shaped inner clamp holder 17a and an outer clamp holder 17b that sandwich the other end of the annular soft member 10 from the inside and outside,
The inner clamp holder 17a has an abutment plate 17aa that abuts against an abutment plate 16aa of another coupling member 16a, and the abutment plate 17aa has a locking hole (not shown) formed therein to engage with a bolt 16ab. There is.
次に、上記実施例の作用効果を説明する。ま
ず、電流測定コイル器は、常態としては円環状バ
ネ性芯体１１の定形的な形状保持機能によつて全
体的になめらかな開ループの円環状で、弾性復元
的に保持されている。この電流測定コイル器をそ
の開き部分１８を介して電線７に通した後、第７
図に示すように、結合部材１６，１７を円環状バ
ネ性芯体１１の付勢力に抗して相互に衝合せしめ
る。かかる場合、円環状バネ性芯体１１の結合部
材１６，１７側が中心方向へ若干たわむものの、
全体的には真円に近い閉ループを形成する。な
お、結合部材１６，１７の結合状態時に完全な円
となるように見越して、真円から若干はずした円
環状バネ性芯体１１を円環状軟質部材１５内に通
したものとしても良い。結合部材１６，１７を結
合した状態では、円環状バネ性芯体１１が全体的
に放射方向に拡開せんとする復元力を与えるが、
これは結合された結合部材１６，１７部分で阻止
されており、円環状バネ性芯体１１即ち電流測定
コイル器は相当の外力に対しても非変形で、真円
のまま保持される。 Next, the effects of the above embodiment will be explained. First, the current measuring coil device is normally held in a smooth open-loop annular shape as a whole by the shape-retaining function of the annular spring core 11 in an elastically restoring manner. After passing this current measuring coiler through its open part 18 to the wire 7, the seventh
As shown in the figure, the coupling members 16 and 17 are brought into contact with each other against the biasing force of the annular spring core 11. In such a case, although the coupling members 16 and 17 sides of the annular spring core 11 are slightly bent toward the center,
Overall, a closed loop that is close to a perfect circle is formed. In addition, in order to form a perfect circle when the coupling members 16 and 17 are in the coupled state, the annular spring core 11 may be inserted into the annular soft member 15 so as to be slightly out of the true circle. When the coupling members 16 and 17 are coupled together, the annular spring core 11 provides a restoring force that prevents the entire structure from expanding in the radial direction.
This is prevented by the joined connecting members 16 and 17, and the annular spring core 11, ie, the current measuring coil, is not deformed even by a considerable external force and is maintained as a perfect circle.
次に、電線７が中心に来るように電流測定コイ
ル器を位置決めする。ここで、電流測定コイル器
はその向きや支持力の如何に拘らず変形すること
なく強固な真円のまま保持されるので、電流測定
コイル器の支持方法が簡単であると共に、如何な
る配向の電線７に対しても自由変形なく電流測定
が可能である。この後、電線７に流れる電流の測
定が行なわれるが、電流測定コイル器は常に真円
であるので、電線７の回りに発生する円状の磁界
はトロイダルコイル１２のすべてと均一に鎖交す
ることが可能で、電流測定コイル器の中心に電線
７がある場合には、ケーブル１３に流れる測定電
流値を極大値として与えるので、従来に比して測
定精度及び信頼性が向上する。測定終了後、結合
部材１６，１７を解除して電流測定コイル器を電
線７から外す。このように測定の都度、結合部材
１６，１７の結合・解除が行なわれるが、電流測
定コイル器について変形の生じる部分は、実質上
結合部材１６，１７近傍部の範囲だけであり、し
かも弾力変形で内径に比して僅小変位量であるこ
とから、環状軟質部材１５上に巻回されたトロイ
ダルコイル１２のコイル線の位置ずれを効果的に
防止でき、高精度測定の実現及び耐久性の向上を
図ることができる。 Next, the current measuring coil device is positioned so that the electric wire 7 is centered. Here, the current measuring coil is held as a strong perfect circle without deformation regardless of its orientation or supporting force, so the method of supporting the current measuring coil is simple, and it can be used with wires of any orientation. 7, current measurement is possible without free deformation. After this, the current flowing through the wire 7 is measured, but since the current measuring coil is always a perfect circle, the circular magnetic field generated around the wire 7 evenly interlinks all of the toroidal coils 12. When the electric wire 7 is located at the center of the current measuring coil device, the measured current value flowing through the cable 13 is given as the maximum value, so that the measurement accuracy and reliability are improved compared to the conventional method. After the measurement is completed, the coupling members 16 and 17 are released and the current measuring coil device is removed from the electric wire 7. In this way, the coupling members 16 and 17 are coupled and released each time a measurement is made, but the only part of the current measurement coil device that undergoes deformation is substantially only the area near the coupling members 16 and 17, and moreover, it is elastically deformed. Since the amount of displacement is very small compared to the inner diameter, it is possible to effectively prevent the positional shift of the coil wire of the toroidal coil 12 wound on the annular soft member 15, realizing high precision measurement and improving durability. You can improve your performance.
［考案の効果］
以上説明したように、本考案に係る電流測定コ
イル器によれば、次の効果を奏する。[Effects of the Invention] As explained above, the current measuring coil device according to the present invention provides the following effects.
開ループ円環状バネ性芯体の存在により、常
態及び測定時においても、電流測定コイル器は
全体として円環状に保持され、自由な変形屈曲
が殆ど起こらず、これにより巻回されたコイル
線の位置ずれを極力防止することができ、かか
る点から耐用年数の増大及び測定精度の向上に
寄与する。 Due to the presence of the open-loop annular spring core, the current measuring coil device is held in an annular shape as a whole during normal conditions and during measurement, and there is almost no free deformation and bending, which allows the coil wire to be wound. Misalignment can be prevented as much as possible, which contributes to an increase in service life and an improvement in measurement accuracy.
定形性があるので、測定時における支持方法
が簡単で、導線等に対する位置決を正確に行な
うことができ、またコイルと発生磁界との鎖交
率を高めることが可能で、測定感度及び測定精
度を共に高くすることができる。 Because it has a fixed shape, it is easy to support it during measurement, allowing accurate positioning with respect to conductors, etc., and it is also possible to increase the linkage rate between the coil and the generated magnetic field, improving measurement sensitivity and measurement accuracy. Both can be made higher.
第１図は、本考案に係る電流測定コイル器の一
実施例を示す平面図である。第２図は、同実施例
を示す斜視図である。第３図は、同実施例を示す
断面図である。第４図は同実施例の一端部を示す
分解斜視図である。第５図は、同実施例の電気的
構成を示す概略図である。第６図は、従来の電流
測定コイル器の一例を示す正面図である。第７図
は、同従来例を示す断面図である。第８図は、同
従来例の使用態様を示す斜視図である。
１０……円環状軟質部材、１１……円環状バネ
性芯体、１２……トロイダルコイル、１３……ケ
ーブル、１４……布テープ等の固定材、１５……
チユーブ状ゴム製外皮、１６，１７……結合部
材、１８……開き部分。
FIG. 1 is a plan view showing an embodiment of the current measuring coil device according to the present invention. FIG. 2 is a perspective view showing the same embodiment. FIG. 3 is a sectional view showing the same embodiment. FIG. 4 is an exploded perspective view showing one end of the same embodiment. FIG. 5 is a schematic diagram showing the electrical configuration of the same embodiment. FIG. 6 is a front view showing an example of a conventional current measuring coil device. FIG. 7 is a sectional view showing the conventional example. FIG. 8 is a perspective view showing how the conventional example is used. 10... Annular soft member, 11... Annular spring core, 12... Toroidal coil, 13... Cable, 14... Fixing material such as cloth tape, 15...
Tube-shaped rubber outer skin, 16, 17...connection member, 18...opening part.
Claims (1)
た開ループの円環状軟質部材と、この上に巻回
されたトロイダルコイルと、該円環状軟質部材
の両端に装着され相両端を衝合離間自在の結合
部材と、を有することを特徴とする電流測定コ
イル器。 (2) 前記円環状バネ性芯体は、燐青銅等の非磁性
体バネで形成されていることを特徴とする実用
新案登録請求の範囲第１項に記載の電流測定コ
イル器。 (3) 前記一方の結合部材の内側には、前記トロイ
ダルコイルの両引き出し線に並列に接続する可
変抵抗器が固定されていることを特徴とする実
用新案登録請求の範囲第１項に記載の電流測定
コイル器。[Claims for Utility Model Registration] (1) An open-loop annular soft member having an open-loop substantially annular spring core inserted therein, a toroidal coil wound thereon, and the annular soft member. A current measuring coil device comprising: a coupling member attached to both ends of the member and capable of freely abutting and separating both ends of the phase. (2) The current measuring coil device according to claim 1, wherein the annular spring core is formed of a non-magnetic spring such as phosphor bronze. (3) A variable resistor connected in parallel to both lead wires of the toroidal coil is fixed to the inside of the one coupling member, as set forth in claim 1 of the utility model registration claim. Current measurement coil device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17113287U JPH048376Y2 (en) | 1987-11-09 | 1987-11-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17113287U JPH048376Y2 (en) | 1987-11-09 | 1987-11-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0175865U JPH0175865U (en) | 1989-05-23 |
| JPH048376Y2 true JPH048376Y2 (en) | 1992-03-03 |
Family
ID=31462691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17113287U Expired JPH048376Y2 (en) | 1987-11-09 | 1987-11-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH048376Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4550311B2 (en) * | 2001-05-08 | 2010-09-22 | 日置電機株式会社 | Flexible sensor |
| DE602007014195D1 (en) * | 2007-06-28 | 2011-06-09 | Lem Liaisons Electron Mec | Rogowski current sensor |
-
1987
- 1987-11-09 JP JP17113287U patent/JPH048376Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0175865U (en) | 1989-05-23 |
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