JPH0442071Y2 - - Google Patents

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Publication number
JPH0442071Y2
JPH0442071Y2 JP16285887U JP16285887U JPH0442071Y2 JP H0442071 Y2 JPH0442071 Y2 JP H0442071Y2 JP 16285887 U JP16285887 U JP 16285887U JP 16285887 U JP16285887 U JP 16285887U JP H0442071 Y2 JPH0442071 Y2 JP H0442071Y2
Authority
JP
Japan
Prior art keywords
coil
conductor
cord
welding current
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.)
Expired
Application number
JP16285887U
Other languages
Japanese (ja)
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JPH0168191U (en
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 filed Critical
Priority to JP16285887U priority Critical patent/JPH0442071Y2/ja
Publication of JPH0168191U publication Critical patent/JPH0168191U/ja
Application granted granted Critical
Publication of JPH0442071Y2 publication Critical patent/JPH0442071Y2/ja
Expired legal-status Critical Current

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Description

【考案の詳細な説明】 (産業上の利用分野) 本考案は、トロイダル状の形体をなして溶接電
流を検出するコイルに関し、特に携帯性、取扱性
と引張り強度を改善するものである。
[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a toroidal-shaped coil for detecting welding current, and particularly improves portability, handleability, and tensile strength.

(従来の技術) 抵抗溶接用の大電流を検出するために、抵抗溶
接機に電流通路となる導体、例えば二次導体を囲
むようにしてトロイダル状のコイル、いわゆるト
ロイダル・コイルを取り付け、そのコイル端子よ
り溶接電流の微分波形に対応した出力電圧を得る
方法がよく使われている。
(Prior art) In order to detect large currents for resistance welding, a toroidal coil (so-called toroidal coil) is attached to a resistance welding machine so as to surround a conductor that serves as a current path, such as a secondary conductor, and the coil terminal is A commonly used method is to obtain an output voltage that corresponds to the differential waveform of the welding current.

第3図は、トロイダル・コイルの典型的な構造
を示す。磁性体からなるドーナツ(トロイダル)
状の芯100の外周に銅線102を巻き付けて外
側を絶縁体104のモールドで固め、銅線102
の両端部102a,102bをコイル端子として
取り出した構造である。このコイルは、溶接機の
組立段階でその中心の開口106を二次導体(図
示せず)に嵌め込むようにして取り付けられる。
したがつて、いつたん取り付けられると溶接機に
組込まれた部品となり、簡単には取り外しが出来
ないという不便がある。
FIG. 3 shows a typical structure of a toroidal coil. Donut made of magnetic material (toroidal)
A copper wire 102 is wound around the outer periphery of a shaped core 100 and the outside is hardened with an insulator 104 mold.
This structure has both ends 102a and 102b taken out as coil terminals. The coil is installed with its central opening 106 fitting into a secondary conductor (not shown) during assembly of the welding machine.
Therefore, once installed, it becomes an integrated part of the welding machine and cannot be easily removed, which is an inconvenience.

第4図は、上記の組込式コイルの欠点を解決す
るために考案された従来の着脱可能型溶接電流検
出コイルの構造を示す。このコイルは、布または
ゴムのベルト200の中間部の外周に銅線202
を巻き付け、一方のベルト端部側から銅線202
の巻き始め部202aと巻き終わり部202bを
引き出してそれらを検出出力線204,206に
ハンダ付けで接合し、ベルト200の全体および
接合部208,210を絶縁体212で包んだ構
造であり、考案者の名に因んで「ロゴスキー・ベ
ルト」と称されている。
FIG. 4 shows the structure of a conventional removable welding current detection coil devised to solve the drawbacks of the above-mentioned built-in coil. This coil consists of a cloth or rubber belt 200 with a copper wire 202 attached to the outer periphery of the middle part.
Copper wire 202 from one end of the belt.
The winding start part 202a and the winding end part 202b are pulled out and joined to the detection output lines 204, 206 by soldering, and the entire belt 200 and the joined parts 208, 210 are wrapped in an insulator 212. It is called the ``Rogowski Belt'' after his name.

第5図に示すように、このような帯形のコイル
は、二次導体214の周りに1回巻き両端部を合
わせて紐216等で固定すると、トロイダル状の
形体をなし、第3図のトロイダル・コイルと同様
な電流検出機能をもつに至る。このコイルの取り
外しは簡単で、紐216を解くだけでよく、溶接
機を分解する必要はない。
As shown in FIG. 5, when such a band-shaped coil is wound once around the secondary conductor 214 and both ends are brought together and fixed with a string 216 or the like, it forms a toroidal shape, and as shown in FIG. It has a current detection function similar to that of a toroidal coil. Removal of this coil is easy, just by untying the string 216, and there is no need to disassemble the welding machine.

(考案が解決しようとする問題点) しかしながら、上記のような「ロゴスキー・ベ
ルト」は結構かさばり携帯にそれほど便利なもの
ではない。さらに、検出出力線204,206に
対して矢印Fの方向に外力が加わると、それら検
出出力線とコイルの銅線端部とのハンダ付け接合
部208,210に引つ張り力が集中する。その
ため、コイルの着脱を頻繁に行つたり、第5図の
ような取付時に作業員があやまつて検出出力線2
04,206に足を引つ掛けた時などに、接合部
208,210で断線することがある。これを修
理するとなると、絶縁体212を剥いで中の接合
部208,210をハンダ付けし、その上から再
度絶縁体212をモールドしなくてはならず、作
業が面倒である。
(Problems to be solved by the invention) However, the above-mentioned "Rogowski belt" is quite bulky and is not very convenient to carry. Furthermore, when an external force is applied to the detection output lines 204 and 206 in the direction of arrow F, tensile force is concentrated on the soldered joints 208 and 210 between the detection output lines and the copper wire ends of the coil. As a result, the coils may be frequently attached and detached, or workers may mistakenly connect the detection output wire 2 during installation as shown in Figure 5.
04, 206, the wires may break at the joints 208, 210. If this is to be repaired, the insulator 212 must be peeled off, the joints 208 and 210 inside must be soldered, and then the insulator 212 must be molded over again, which is a cumbersome task.

本考案は、かかる問題点に鑑みてなされたもの
で、携帯性と取扱性にすぐれ、引つ張り力に対し
て断線しにくい頑丈な溶接電流検出コイルを提供
することを目的とする。
The present invention was devised in view of these problems, and an object of the present invention is to provide a welding current detection coil that is excellent in portability and handling, and is resistant to disconnection due to tensile force.

(問題点を解決するための手段) 上記目的を達成するために本考案は、トロイダ
ル状の形体をなしてその中心の開口を貫く導体を
流れる溶接電流を検出するようにした溶接電流検
出コイルにおいて、複数の導体芯を有する多芯型
コードの外周にコイル導体をある長さにわたつて
巻回し、その巻き始め部と巻き終わり部をコード
の一端部側にて2本の導体芯のそれぞれの一端部
と接合し、コイル導体の巻回部と接合部とを覆う
ように絶縁体で被覆し、コードの他端部側にて2
本の導体芯のそれぞれの他端部をコイル端子とし
て取り出してなる構成とした。
(Means for Solving the Problems) In order to achieve the above object, the present invention provides a welding current detection coil which has a toroidal shape and detects welding current flowing through a conductor passing through an opening in the center. , a coil conductor is wound for a certain length around the outer periphery of a multicore cord having multiple conductor cores, and the winding start and winding ends are connected to each of the two conductor cores at one end of the cord. Connect one end of the cord, cover the coil conductor winding and joint with an insulator, and connect the other end of the cord with an insulator.
The other end of each conductor core is taken out as a coil terminal.

(作用) 本考案の溶接電流検出コイルは1本の多芯型コ
ードを芯としてロープ状の形体を基本体とするの
で、かさばらず携帯性に便利で取り扱いが簡単で
ある。
(Function) The welding current detection coil of the present invention has a rope-like shape with a single multicore cord as its core, so it is not bulky, convenient for portability, and easy to handle.

このコイルを使用するときには、例えば溶接機
の二次導体に絶縁体被覆部(コイル部)を1回巻
いてその両端部を紐等で固定すればよく、これに
よつてトロイダル状の形体になり、トロイダル・
コイルとしての電流検出機能が得られる。すなわ
ち二次導体に溶接電流が流れると、その回りに発
生した磁束がコイル部のコイル導体内を通り、そ
の磁束の時間微分(したがつて、溶接電流の時間
微分)に対応した誘導電圧がコイル導体の両端
部、つまり巻き始め部と巻き終わり部に得られ、
その誘導電圧は接合部およびコードの2本の導体
芯を介してその他端部より取り出される。
When using this coil, for example, it is sufficient to wrap the insulator coating (coil) once around the secondary conductor of a welding machine and secure both ends with string, etc., which creates a toroidal shape. , toroidal
Current detection function as a coil can be obtained. In other words, when a welding current flows through the secondary conductor, the magnetic flux generated around it passes through the coil conductor of the coil section, and an induced voltage corresponding to the time differential of the magnetic flux (therefore, the time differential of the welding current) is generated in the coil. Obtained at both ends of the conductor, that is, at the beginning and end of the winding,
The induced voltage is taken out from the other end via the joint and the two conductor cores of the cord.

本考案のコイルに外力、特に引つ張り力が加わ
つても、頑丈なコードがそれを受けとめ、コイル
導体とコード導体芯との接合部には引つ張り力の
影響が及ばないためそこで外れることがなく、断
線の危険は少ない。
Even if an external force, especially a tensile force, is applied to the coil of this invention, the sturdy cord will absorb it, and the tensile force will not affect the joint between the coil conductor and the cord conductor core, so it will not come off there. There is no risk of disconnection.

(実施例) 以下、第1図および第2図を参照して本考案の
一実施例を説明する。
(Example) An example of the present invention will be described below with reference to FIGS. 1 and 2.

第1図は、この実施例による電流検出コイルの
構造を示す一部切欠斜視図である。
FIG. 1 is a partially cutaway perspective view showing the structure of the current detection coil according to this embodiment.

図示のように、このコイルは1本の2芯型コー
ド10を基体とし、それ自体はロープ状の形体を
なしている。コード10の一端部10aから中間
部にかけてある長さにわたり銅線(コイル導体)
12がコード10の外周に巻回される。銅線12
の巻き始め部12aと巻き終わり部12bはコー
ド10の一端部10a側にて露出された導体芯の
それぞれの一端部14a,16aに例えばハンダ
付けで接合される。そして、銅線12の全体およ
び接合部18,20が絶縁体21で被覆され、そ
の部分つまりコイル部22はコード10よりも太
い径になつている。
As shown in the figure, this coil has a single two-core cord 10 as its base, and itself has a rope-like shape. A copper wire (coil conductor) extends over a certain length from one end 10a of the cord 10 to the middle part.
12 is wound around the outer periphery of the cord 10. copper wire 12
The winding start portion 12a and the winding end portion 12b are joined, for example, by soldering, to the respective one ends 14a and 16a of the conductor core exposed on the one end 10a side of the cord 10. The entire copper wire 12 and the joint portions 18 and 20 are covered with an insulator 21, and that portion, that is, the coil portion 22, has a diameter larger than that of the cord 10.

コード10の他端部には、コイル端子を溶接測
定装置または溶接制御装置の入力端子に接続する
ためのコネクタ24が取り付けられる。このコネ
クタ24の雌ピンは26,28は、コード10の
他端部10bにて露出された導体芯のそれぞれの
他端部14b,16b(図示せず)に接続されて
いる。
A connector 24 is attached to the other end of the cord 10 for connecting the coil terminal to an input terminal of a welding measuring device or a welding control device. Female pins 26 and 28 of this connector 24 are connected to respective other ends 14b and 16b (not shown) of the conductor core exposed at the other end 10b of the cord 10.

第2図は、本実施例の溶接電流検出コイルの使
用例を示す。30は抵抗溶接機本体、32は加圧
用シリンダ、34は上部アーム、36は上部電極
チツプ、38,40は被溶接材、42は下部電極
チツプ、44は下部アームである。
FIG. 2 shows an example of use of the welding current detection coil of this embodiment. 30 is a resistance welding machine body, 32 is a pressure cylinder, 34 is an upper arm, 36 is an upper electrode tip, 38 and 40 are materials to be welded, 42 is a lower electrode tip, and 44 is a lower arm.

図示のように、二次導体の下部アーム44にコ
イル部22を1回巻いてその両端部を紐50等で
固定すればトロイダル状の形体になり、トロイダ
ル・コイルとしての電流検出機能が得られる。す
なわち、下部アーム44に溶接電流が流れると、
アーム44の回りに発生した磁束がコイル部22
内の銅線12のコイル内を通り、その磁束の時間
微分(したがつて、溶接電流の時間微分)に相当
する誘導電圧が銅線12の巻き始め部12a、巻
き終わり部12bに得られ、その誘導電圧は接合
部18,20およびコード10の導体芯を介して
コネクタ24の端子ピン26,28より取り出さ
れる。
As shown in the figure, if the coil part 22 is wound once around the lower arm 44 of the secondary conductor and its both ends are fixed with a string 50, etc., it becomes a toroidal shape, and the current detection function as a toroidal coil is obtained. . That is, when welding current flows through the lower arm 44,
The magnetic flux generated around the arm 44 is transferred to the coil portion 22.
The coil passes through the coil of the copper wire 12, and an induced voltage corresponding to the time derivative of the magnetic flux (therefore, the time derivative of the welding current) is obtained at the winding start portion 12a and the winding end portion 12b of the copper wire 12, The induced voltage is taken out from the terminal pins 26, 28 of the connector 24 via the joints 18, 20 and the conductor core of the cord 10.

コード10は比較的長めのものでよく、コネク
タ24は溶接制御装置52の入力端子に接続され
る。制御装置52は、入力した電圧信号を積分し
て溶接電流と同じ波形の信号を生成し、この信号
を基に溶接電流の実効値または平均値を演算し、
その測定値を表示したり、それに基づいて溶接電
流の値や通電サイクルの制御を行う。
Cord 10 may be relatively long, and connector 24 is connected to an input terminal of welding control device 52. The control device 52 integrates the input voltage signal to generate a signal with the same waveform as the welding current, calculates the effective value or average value of the welding current based on this signal,
The measured value is displayed and the welding current value and energization cycle are controlled based on it.

このように、本実施例の溶接電流検出コイルは
1本の2芯型コード10を芯としてロープ状の形
体を基本体とするので、かさばらず携帯性に便利
で取り扱いが簡単である。さらに、外力、特に引
つ張り力が加わつても、頑丈なコード10がそれ
を受けとめ、コイルの銅線10とコード導体芯と
の接合部18、20には引つ張り力の影響が及ば
ないためそこで外れることがない。したがつて、
溶接機にコイルの着脱を頻繁に行つたり、第2図
のような取付時に作業員があやまつてコード10
に足を引つ掛けたときでも、断線するおそれは少
ない。
As described above, the welding current detection coil of this embodiment has a rope-like shape with one two-core cord 10 as its core, so it is not bulky, convenient for portability, and easy to handle. Furthermore, even if an external force, especially a tensile force, is applied, the strong cord 10 will receive it, and the tensile force will not affect the joints 18 and 20 between the copper wire 10 of the coil and the cord conductor core. Because of this, it never comes off. Therefore,
Code 10 may occur if the coil is attached to and removed from the welding machine frequently, or if the worker makes a mistake when installing the coil as shown in Figure 2.
Even if you trip over the wire, there is little chance of it breaking.

なお、コネクタ24を取り付けずに、導体芯の
他端部14b,16bを直接コイル端子とするこ
とも可能である。また、2芯型コード10の代わ
りに3芯型や4芯型等の他の多芯型コードを利用
することも可能である。
Note that it is also possible to directly use the other ends 14b and 16b of the conductor core as coil terminals without attaching the connector 24. Further, instead of the two-core cord 10, it is also possible to use other multi-core cords such as a three-core type or a four-core type.

(考案の効果) 以上のように、本考案によれば、1本の多芯型
コードを芯としてロープ状の形体を基本体とする
ので、かさばらず携帯性に便利で取り扱いが簡単
であり、また引つ張り力が加わつてもコードでそ
れを受けとめ、コイル導体とコード導体芯との接
合部には引つ張り力の影響を及ばさないようにし
たので断線の危険が少ないという顕著な効果が得
られる。
(Effects of the invention) As described above, according to the invention, since the basic body is a rope-like shape with one multi-core cord as the core, it is not bulky, convenient for portability, and easy to handle. In addition, even if a tensile force is applied, the cord absorbs it, and the tensile force does not affect the joint between the coil conductor and the cord conductor core, which has the remarkable effect of reducing the risk of wire breakage. is obtained.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は、本考案の一実施例による溶接電流検
出コイルの構造を示す一部切欠斜視図、第2図
は、第1図のコイルの使用(取付)例を示す斜視
図、第3図は、従来の典型的なトロイダル・コイ
ルの構造を示す略斜視図、第4図は、従来の着脱
可能型溶接電流検出コイルの構造を示す略斜視
図、および第5図は、第4図のコイルの使用(取
付)例を示す斜視図である。 10……2芯型コード、12……銅線(コイル
導体)、14a,16a……導体芯の一端部、1
8,20……接合部、21……絶縁体、24……
コネクタ、26,28……雌ピン。
FIG. 1 is a partially cutaway perspective view showing the structure of a welding current detection coil according to an embodiment of the present invention, FIG. 2 is a perspective view showing an example of use (installation) of the coil shown in FIG. 1, and FIG. 4 is a schematic perspective view showing the structure of a conventional typical toroidal coil, FIG. 4 is a schematic perspective view showing the structure of a conventional detachable welding current detection coil, and FIG. It is a perspective view showing an example of use (attachment) of a coil. 10...Two-core cord, 12...Copper wire (coil conductor), 14a, 16a...One end of conductor core, 1
8, 20...Joint part, 21...Insulator, 24...
Connector, 26, 28...female pin.

Claims (1)

【実用新案登録請求の範囲】 トロイダル状の形体をなしてその中心の開口を
貫く導体を流れる溶接電流を検出するようにした
溶接電流検出コイルにおいて、 複数の導体芯を有する多芯型コードの外周にコ
イル導体をある長さにわたつて巻回し、その巻き
始め部と巻き終わり部を前記コードの一端部側に
て2本の前記導体芯のそれぞれの一端部と接合
し、前記コイル導体の巻回部と前記接合部とを覆
うように絶縁体で被覆し、前記コードの他端部側
にて前記2本の導体芯のそれぞれの他端部をコイ
ル端子として取り出してなることを特徴とする溶
接電流検出コイル。
[Claims for Utility Model Registration] In a welding current detection coil configured to detect welding current flowing through a conductor having a toroidal shape and passing through an opening in the center, the outer periphery of a multicore cord having a plurality of conductor cores. A coil conductor is wound over a certain length, and the winding start and end of the winding are connected to one end of each of the two conductor cores at one end of the cord, and the winding of the coil conductor is completed. The coil portion and the joint portion are covered with an insulator, and the other end portions of the two conductor cores are taken out as coil terminals at the other end side of the cord. Welding current detection coil.
JP16285887U 1987-10-24 1987-10-24 Expired JPH0442071Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16285887U JPH0442071Y2 (en) 1987-10-24 1987-10-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16285887U JPH0442071Y2 (en) 1987-10-24 1987-10-24

Publications (2)

Publication Number Publication Date
JPH0168191U JPH0168191U (en) 1989-05-02
JPH0442071Y2 true JPH0442071Y2 (en) 1992-10-02

Family

ID=31447068

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16285887U Expired JPH0442071Y2 (en) 1987-10-24 1987-10-24

Country Status (1)

Country Link
JP (1) JPH0442071Y2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3574409B2 (en) * 2001-01-25 2004-10-06 株式会社中央電機計器製作所 Current sensor and current measurement circuit
JP4550311B2 (en) * 2001-05-08 2010-09-22 日置電機株式会社 Flexible sensor
JP5126154B2 (en) * 2009-04-22 2013-01-23 株式会社日本自動車部品総合研究所 Current sensor device

Also Published As

Publication number Publication date
JPH0168191U (en) 1989-05-02

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