JPH0239661Y2 - - Google Patents
Info
- Publication number
- JPH0239661Y2 JPH0239661Y2 JP1985017803U JP1780385U JPH0239661Y2 JP H0239661 Y2 JPH0239661 Y2 JP H0239661Y2 JP 1985017803 U JP1985017803 U JP 1985017803U JP 1780385 U JP1780385 U JP 1780385U JP H0239661 Y2 JPH0239661 Y2 JP H0239661Y2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- opening
- secondary conductor
- current detection
- welding current
- 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
- 238000003466 welding Methods 0.000 claims description 37
- 239000004020 conductor Substances 0.000 claims description 31
- 238000001514 detection method Methods 0.000 claims description 23
- 238000004804 winding Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Description
【考案の詳細な説明】
[産業上の利用分野]
本考案は、抵抗溶接機等における溶接電流を検
出するためのコイルに関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a coil for detecting welding current in a resistance welding machine or the like.
[従来の技術]
従来、抵抗溶接機において溶接電流を検出する
ための装置として、第7図に示すようなトロイダ
ルコイルが使われている。このコイルのコイル線
1は、完全に閉ループの形体をなし、回りをモー
ルドで固められ、その内側の貫通口7には溶接二
次導体(図示せず)が通される。この二次導体に
溶接電流が流れると、その回りに発生した磁束の
うちコイル線1のループ内を磁束によつてコイル
に誘導電圧が発生し、その出力端子から溶接電流
検出信号が取り出される。[Prior Art] Conventionally, a toroidal coil as shown in FIG. 7 has been used as a device for detecting welding current in a resistance welding machine. The coil wire 1 of this coil has a completely closed loop shape and is solidified around it with a mold, and a welded secondary conductor (not shown) is passed through the through hole 7 inside the coil wire. When a welding current flows through this secondary conductor, an induced voltage is generated in the coil by the magnetic flux generated around the secondary conductor within the loop of the coil wire 1, and a welding current detection signal is taken out from its output terminal.
[考案が解決しようとする課題]
しかし、上記のような従来のトロイダルコイル
は溶接機への取り付けが難しかつた。すなわち、
該二次導体付近の各部をいつたん分離してトロイ
ダルコイルを該二次導体に装着し、それから各部
を繋いで元に戻さなければならず、取付作業が面
倒であつた。また、溶接機の型式によつては、そ
のような分解が不可能なものもあり、その場合に
はコイルの取付箇所が溶接電極付近に限定された
り、あるいは取付不能(したがつて使用不能)と
なることがあつた。[Problems to be solved by the invention] However, the conventional toroidal coil as described above is difficult to attach to a welding machine. That is,
The installation work was troublesome because each part near the secondary conductor had to be separated, the toroidal coil was attached to the secondary conductor, and then each part had to be connected and put back together. Also, depending on the model of the welding machine, such disassembly may not be possible, and in that case, the coil installation location is limited to the vicinity of the welding electrode, or the coil cannot be installed (and therefore cannot be used). Something happened.
本考案は、かかる問題点に鑑みてなされたもの
で、溶接機への取付が極めて簡単で、かつ信頼性
の高い電流検出機能を有する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 has been made in view of these problems, and an object of the present invention is to provide a welding current detection coil that is extremely easy to attach to a welding machine and has a highly reliable current detection function.
[課題を解決するための手段]
上記の目的を達成するために、本考案の溶接電
流検出コイルは、トロイダル状の形体をなしてそ
の内側の貫通口を貫く二次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、二次導体を出し入れするための開口部を有
し、この開口部に近いほど巻線密度を相対的に高
くしてなる構成とした。[Means for Solving the Problems] In order to achieve the above object, the welding current detection coil of the present invention has a toroidal shape and detects the welding current flowing through the secondary conductor passing through the through hole inside the coil. The welding current detection coil has an opening for inserting and removing the secondary conductor, and the winding density is relatively high closer to the opening.
また、開口部を任意の方向に向けた取付を可能
とするため、二次導体を入れた状態で開口部を塞
ぐための蓋手段を具備する構成とした。 Furthermore, in order to enable installation with the opening facing in any direction, a structure is provided in which a lid means is provided for closing the opening with the secondary conductor inserted.
[作用]
本考案の溶接電流検出コイルを取り付けるには
その開口部を通して二次導体を貫通口内に入れる
ようにコイル線を装着すればよく、溶接機側で各
部を取り外したり分解したりする必要はない。コ
イルを取り外すには、開口部を通して二次導体を
貫通口外へ出すようにコイルを外せばよく、この
作業も至つて簡単である。[Function] To install the welding current detection coil of the present invention, all you have to do is attach the coil wire through the opening and insert the secondary conductor into the through hole, and there is no need to remove or disassemble each part on the welding machine side. do not have. To remove the coil, all you have to do is pass through the opening and remove the coil so that the secondary conductor comes out of the through hole, and this operation is also very simple.
この開口部にはコイル部が存在しないが、本考
案においては、この開口部に近いほど巻線密度を
相対的に高くすることにより、そのコイル削除分
補い、二次導体が開口部より奥に位置するときも
開口部付近に位置するときも略々一定なコイル感
度で安定な電流検出結果を得ることができる。 Although there is no coil part in this opening, in the present invention, by making the winding density relatively higher closer to the opening, the removal of the coil is compensated for, and the secondary conductor is placed deeper than the opening. It is possible to obtain stable current detection results with substantially constant coil sensitivity both when the coil is located at the same position and when it is located near the opening.
また、二次導体を入れた状態で開口部を蓋手段
で塞ぐことにより、コイルを任意の向きに取り付
けても、二次導体からの離脱を防止することがで
きる。 Furthermore, by closing the opening with the lid means with the secondary conductor inserted, it is possible to prevent the coil from separating from the secondary conductor even if the coil is attached in any direction.
[実施例]
第1図は、本考案の一実施例による溶接電流検
出コイルの要部の構造を示す斜視図である。この
溶接電流検出コイル10のコイル本体1は、トロ
イダル状の形体をなしているが、従来のような閉
ループ型ではなく、貫通口7内に二次導体(図示
せず)を出し入れするための開口部4を有してい
る。そして、第1図aに示すように、コイル巻線
密度を、開口部4に近いほど相対的に高くしてい
る。これにより、開口部4付近のコイル端部1a
は、第1図aに示すような太径部となつている。
かかる巻線構造によれば、開口部4のコイル削除
分をコイル部全体で補うことができ、第7図に示
すような閉ループ型トロイダルコイルと同等の電
流検出機能が得られる。なお、3はコイル本体1
を包むモールド、2はコイル出力線である。[Embodiment] FIG. 1 is a perspective view showing the structure of a main part of a welding current detection coil according to an embodiment of the present invention. The coil body 1 of this welding current detection coil 10 has a toroidal shape, but it is not a closed loop type like the conventional one, but has an opening for inserting and removing a secondary conductor (not shown) in the through hole 7. It has section 4. As shown in FIG. 1a, the coil winding density is made relatively higher closer to the opening 4. As a result, the coil end 1a near the opening 4
is a large diameter portion as shown in FIG. 1a.
According to this winding structure, the amount of coil removed from the opening 4 can be compensated for by the entire coil section, and a current detection function equivalent to that of a closed-loop toroidal coil as shown in FIG. 7 can be obtained. In addition, 3 is the coil body 1
2 is the coil output line.
第2図は、本実施例の作用を説明するための略
側面図である。第2図aは断面の比較的大きい溶
接導体5bを貫通口7内に入れた場合、第2図b
は断面の比較的小さい二次導体5bを貫通口7の
奥に入れた場合、第2図cは断面の比較的小さい
二次導体5cを開口部4付近に入れた場合であ
る。いずれの場合も、開口4を通して二次導体を
出し入れできるので、本コイル10を取り付ける
に当たつて溶接機側において分解や取り外し等を
行う必要はない。また、第2図bの取付と第2図
cの取付とを比較した場合、外見的には前者のほ
うが後者よりも磁力線鎖交数が大きく、ひいては
コイル感度が高く、両者の電流検出結果に誤差が
出るようにみえる。しかし、第1図につき上述し
たように、本コイル10の巻線構造は開口部4に
近づくほど相対的に巻線密度が高くなつているた
め、結果的には両者の磁力線鎖交数ないしコイル
感度は略々同じであり、電流検出結果に実質的な
誤差は生じない。 FIG. 2 is a schematic side view for explaining the operation of this embodiment. Fig. 2a shows a case where a welding conductor 5b with a relatively large cross section is inserted into the through hole 7; Fig. 2b
2C shows the case where the secondary conductor 5b with a relatively small cross section is inserted deep into the through hole 7, and FIG. 2c shows the case where the secondary conductor 5c with a relatively small cross section is inserted near the opening 4. In either case, since the secondary conductor can be taken in and out through the opening 4, there is no need for disassembly or removal on the welding machine side when installing the present coil 10. Also, when comparing the installation shown in Figure 2b and the installation shown in Figure 2c, the former has a larger number of magnetic field line linkages than the latter, and in turn has higher coil sensitivity, and the current detection results of both are different. There appears to be an error. However, as described above with reference to FIG. 1, the winding structure of the present coil 10 has a relatively higher winding density as it approaches the opening 4, and as a result, the number of interlinkages between the magnetic lines of force or the coil The sensitivity is approximately the same, and there is no substantial error in the current detection results.
第3図は、本コイル10の外観を示す斜視図で
ある。本実施例では、コイル10の貫通口7内に
二次導体(図示せず)を入れた状態で開口部4を
塞ぐための蓋5備えられる。3a,5aはボルト
等の固定手段を受けるための孔である。このよう
な蓋5を付けることにより、二次導体がコイル1
0から離脱するおそれはなく、したがつて開口部
4を上向きにした状態で取り付けることも可能で
ある。 FIG. 3 is a perspective view showing the appearance of the present coil 10. In this embodiment, a lid 5 is provided for closing the opening 4 with a secondary conductor (not shown) inserted into the through hole 7 of the coil 10. 3a and 5a are holes for receiving fixing means such as bolts. By attaching such a lid 5, the secondary conductor can be connected to the coil 1.
There is no risk of it coming off from the 0 position, and therefore it is possible to install it with the opening 4 facing upward.
第4図は、別の実施例による溶接電流検出コイ
ルの要部の構造を示す斜視図である。この実施例
のコイル20は、フレキシブルな帯状の巻心6に
コイルを巻いたもので、両端部6a,6aに近づ
くほど巻線密度を高くしている。このコイル20
を溶接機に取り付けるときは、両端部6a,6a
を合わせるようにしてトロイダル状とし、その中
(貫通口)に二次導体を入れる。このコイル20
は、取付が極めて簡単で、携帯性もあり、電流検
出機能においても上記第1の実施例と同等の信頼
性が得られる。 FIG. 4 is a perspective view showing the structure of a main part of a welding current detection coil according to another embodiment. The coil 20 of this embodiment is a coil wound around a flexible strip-shaped core 6, and the winding density is increased closer to both ends 6a, 6a. This coil 20
When attaching to a welding machine, both ends 6a, 6a
It is made into a toroidal shape by aligning the two, and the secondary conductor is inserted into the toroidal shape (through hole). This coil 20
The second embodiment is extremely easy to install, is portable, and has the same reliability as the first embodiment in terms of current detection function.
第5図は、コイル20をシリーズスポツト溶接
機に使用した例を示す一部断面斜視図である。図
示のように、コイル20を溶接電極21の回りに
ループ状に掛ければよい。第6図は、取付位置の
変形例を示すもので、図示のように、下部被溶接
材23に回りにコイル20を掛けた場合である。
この場合、溶接電極21,21間の無効電流分を
検出することができる。下部被溶接材24にコイ
ル20を掛けても同様な検出が行える。22はバ
ツクバー(金属電極)である。 FIG. 5 is a partially sectional perspective view showing an example in which the coil 20 is used in a series spot welding machine. As shown in the figure, the coil 20 may be looped around the welding electrode 21. FIG. 6 shows a modification of the mounting position, in which the coil 20 is hung around the lower workpiece 23 as shown in the figure.
In this case, the amount of reactive current between the welding electrodes 21, 21 can be detected. Similar detection can be performed by applying the coil 20 to the lower welded material 24. 22 is a back bar (metal electrode).
[考案の効果]
本考案は、上述したような構成を有することに
より、次のような効果を奏する。[Effects of the invention] By having the above-described configuration, the present invention has the following effects.
トロイダル状の形体をなしてその内側の貫通口
を貫く二次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、二次導体を
出し入れするための開口部を有する構成により、
二次導体付近の各部をいつたん外したり分解する
ことなく容易にコイルを取り付けることが可能で
あり、かつ開口部に近いほど巻線密度を相対的に
高くしてなる構成により、開口部のコイル削除分
を補い、貫通口内の二次導体の配置位置に関係な
く一定なコイル感度で信頼性の高い電流検出を行
うことができる。 In a welding current detection coil configured to detect a welding current flowing through a secondary conductor having a toroidal shape and passing through a through hole inside the coil, the present invention has an opening for inserting and removing the secondary conductor.
It is possible to easily install a coil without removing or disassembling each part near the secondary conductor, and the structure in which the winding density is relatively high closer to the opening allows the coil to be installed near the opening. By making up for the deletion, it is possible to perform highly reliable current detection with constant coil sensitivity regardless of the placement position of the secondary conductor inside the through hole.
また、二次導体を入れた状態で開口部を塞ぐた
めの蓋手段を備える構成により、コイルを任意の
向きに取り付けても二次導体からの離脱を防止す
ることができる。 Further, by the structure including the lid means for closing the opening with the secondary conductor inserted, it is possible to prevent the coil from separating from the secondary conductor even if the coil is attached in any direction.
第1図は、本考案の一実施例による溶接電流コ
イルの主要部の構造を示す斜視図、第2図は、実
施例の作用を説明するための一部断面側面図、第
3図は、実施例コイルの全体の外観構成を示す斜
視図、第4図は、別の実施例による溶接電流コイ
ルの構造を示す斜視図、第5図は、実施例コイル
の取付例を示す一部断面側面図、第6図は、実施
例コイルの別の取付例を示す一部断面側面図、お
よび第7図は、従来の溶接電流検出用コイルの構
造を示す斜視図である。
1……コイル本体、1a……コイル端部、5
a,5b,5c……溶接導体、6……巻心、6a
……コイル端部、4……開口部、7……貫通口、
10……溶接電流検出コイル、20……溶接電流
検出コイル。
FIG. 1 is a perspective view showing the structure of the main part of a welding current coil according to an embodiment of the present invention, FIG. 2 is a partially sectional side view for explaining the operation of the embodiment, and FIG. FIG. 4 is a perspective view showing the structure of a welding current coil according to another example. FIG. 5 is a partially sectional side view showing an example of how the example coil is attached. FIG. 6 is a partially sectional side view showing another example of mounting the embodiment coil, and FIG. 7 is a perspective view showing the structure of a conventional welding current detection coil. 1... Coil body, 1a... Coil end, 5
a, 5b, 5c...Welding conductor, 6... Winding core, 6a
... Coil end, 4 ... Opening, 7 ... Through hole,
10... Welding current detection coil, 20... Welding current detection coil.
Claims (1)
口を貫く二次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、 前記貫通口内に前記二次導体を出し入れする
ための開口部を有し、前記開口部に近いほど巻
線密度を相対的に高くしてなることを特徴とす
る溶接電流検出コイル。 (2) 前記二次導体を入れた状態で前記開口部を塞
ぐための蓋手段を具備することを特徴とする実
用新案登録請求の範囲第1項に記載の溶接電流
検出コイル。[Claims for Utility Model Registration] (1) In a welding current detection coil configured to detect a welding current flowing through a secondary conductor having a toroidal shape and passing through a through hole inside the coil, 1. A welding current detection coil having an opening for inserting and removing a secondary conductor, and having a winding density that is relatively high closer to the opening. (2) The welding current detection coil according to claim 1, which is a registered utility model, further comprising a lid means for closing the opening with the secondary conductor inserted therein.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985017803U JPH0239661Y2 (en) | 1985-02-13 | 1985-02-13 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985017803U JPH0239661Y2 (en) | 1985-02-13 | 1985-02-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61138480U JPS61138480U (en) | 1986-08-28 |
JPH0239661Y2 true JPH0239661Y2 (en) | 1990-10-24 |
Family
ID=30505848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1985017803U Expired JPH0239661Y2 (en) | 1985-02-13 | 1985-02-13 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0239661Y2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5557308B2 (en) * | 2009-03-26 | 2014-07-23 | パナソニック株式会社 | Electric leakage detection device and method of arranging coils of electric leakage detection device |
JP6873019B2 (en) | 2017-09-27 | 2021-05-19 | 株式会社日立製作所 | Welding management system |
JP7139218B2 (en) * | 2018-10-30 | 2022-09-20 | ダイハツ工業株式会社 | Weld point evaluation method for indirect spot welding |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS574378A (en) * | 1980-06-09 | 1982-01-09 | Dengensha Mfg Co Ltd | Measuring device for welding current |
JPS5847277A (en) * | 1981-09-14 | 1983-03-18 | Toshiba Corp | Monitoring device for radiation |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5357983U (en) * | 1976-10-19 | 1978-05-17 | ||
JPS5577881U (en) * | 1978-11-21 | 1980-05-29 |
-
1985
- 1985-02-13 JP JP1985017803U patent/JPH0239661Y2/ja not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS574378A (en) * | 1980-06-09 | 1982-01-09 | Dengensha Mfg Co Ltd | Measuring device for welding current |
JPS5847277A (en) * | 1981-09-14 | 1983-03-18 | Toshiba Corp | Monitoring device for radiation |
Also Published As
Publication number | Publication date |
---|---|
JPS61138480U (en) | 1986-08-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH0239661Y2 (en) | ||
EP0242402A4 (en) | Device for confirming operation of electromagnetic actuator. | |
DE69715531D1 (en) | Device and method for measuring the degree of corrosion of cables | |
JPH0815322A (en) | Current sensor | |
JP2000292455A (en) | Current-detecting device | |
EP0949744A3 (en) | Electromagnetic actuator with function detecting position of driven member | |
US20040263151A1 (en) | Current sensor with a control device | |
JP3885408B2 (en) | Electromagnetic switch equipped with current detector and method for manufacturing the same | |
JPS63197314A (en) | Direct current transformer | |
JPH065642Y2 (en) | Current detector | |
JPS6031226Y2 (en) | induction electrical equipment | |
JPH0622220Y2 (en) | Current-voltage converter | |
JPH0525369U (en) | Current sensor | |
JP3193217B2 (en) | Current detector | |
JPS6034790B2 (en) | Steel position detection method in compression joints | |
JPS5938335B2 (en) | Inductive flying device sensor for textile machinery | |
JPS6119114A (en) | Current transformer | |
JP2980460B2 (en) | Current detector | |
JPH0355905Y2 (en) | ||
JPH0531581Y2 (en) | ||
JPH0754990Y2 (en) | Split core type current transformer | |
JPS63163174A (en) | Detection of zero-phase current of pipe type three-phase of cable | |
JPH048376Y2 (en) | ||
JPH0519840Y2 (en) | ||
JPH0743659Y2 (en) | Clamp sensor |