JPS59160929A - Self-holding type electromagnetic contactor - Google Patents
Self-holding type electromagnetic contactorInfo
- Publication number
- JPS59160929A JPS59160929A JP3621983A JP3621983A JPS59160929A JP S59160929 A JPS59160929 A JP S59160929A JP 3621983 A JP3621983 A JP 3621983A JP 3621983 A JP3621983 A JP 3621983A JP S59160929 A JPS59160929 A JP S59160929A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- self
- circuit
- contact
- electromagnetic contactor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 この発明に自己保持型電磁接触器の改良に関する。[Detailed description of the invention] The present invention relates to improvements in self-holding electromagnetic contactors.
通例の電磁接触器に、電気回路の開閉に当って接触子の
開閉を交流電磁石による吸引吸着力とスプリング等の弾
発要素による復帰力とによって行なうが、電気回路が閉
成1れている状態、すなわち接触子が接触したま!の状
態の保持には電磁石に交流を通電しておかなければなら
ない。この交流常時通電のため、電力を消費するのみな
らず、詩にうなりを発生した夕、温度上昇による電磁石
コイルの損傷による故障を起す等の欠点がある。In a conventional electromagnetic contactor, when opening and closing an electric circuit, the contactor is opened and closed by the suction force of an AC electromagnet and the return force of an elastic element such as a spring, but when the electric circuit is closed. , that is, the contactor made contact! To maintain this state, alternating current must be applied to the electromagnet. This constant AC current not only consumes electricity, but also has drawbacks such as failures due to damage to the electromagnetic coil due to temperature rise.
上記欠点を解消するものとして、電磁石の代υに永久磁
石を使用した自己保持型電磁接触器があり、このものに
瞬時の直流通電以外に電力を不要とするため、省エネル
ギー型であり、温度上昇による励磁コイルの損傷やうな
りの発生等を解消する長所がある反面、他方、駆動電源
が直流のため、整流回路、電源極性変更ヌイッチが必要
である等の問題点を有している。As a solution to the above drawbacks, there is a self-holding magnetic contactor that uses a permanent magnet instead of an electromagnet.Since this device requires no electricity other than an instantaneous direct current, it is energy-saving and increases the temperature. Although this has the advantage of eliminating damage to the excitation coil and the occurrence of beats caused by the noise, it also has problems such as the need for a rectifier circuit and a switch for changing the polarity of the power source because the drive power source is direct current.
本発明者に、これらの諸問題を解決しようとして永久磁
石孕使用し、しかも交流による駆動を可能ならしめた自
己保持型電磁接触器を開発した(特願昭57−1495
55)。In order to solve these problems, the present inventor developed a self-holding electromagnetic contactor that uses a permanent magnet and can be driven by alternating current (Japanese Patent Application No. 57-1495)
55).
この自己保持型電磁接触器は交流使用を可能としたこと
で、整流回路、電源極性変更ヌイッチ等を必要とせず、
従って従来の電磁石のみを使用した電磁接触器の長所と
、永久磁石を使用した自己保持ス(ν電磁接触器の長所
とを併有するものであるが、磁気回路の永久磁石として
高保磁力のものを一定方向に着磁されたま!の状態(1
賂々飽和着磁の状態)で使用し、プランジャーの吸引吸
着、釈′放を行うため、吸着時、釈放時の交流による振
動防止のため、第1図の回路に示す如く、従来から使用
される電、磁接触器と同様A接点、すlゎぢコイルの励
磁によって開路から閉路に移る接点、及びB接点、すな
わちコイルの励磁によって閉路がら開路に移る移点を設
け、これらをプランジャーの動きに連動芒ゼ”る必要が
あり、これら接点の開放の際に接点11A1に放電が起
り火花が発生する。This self-holding electromagnetic contactor can be used with alternating current, so there is no need for a rectifier circuit, a power supply polarity change switch, etc.
Therefore, it has both the advantages of a conventional electromagnetic contactor that uses only electromagnets and the advantages of a self-holding contactor that uses permanent magnets (ν), but it is better to use a high coercive force as the permanent magnet in the magnetic circuit. State of being magnetized in a certain direction (1
Since the plunger is used in a state of saturation magnetization) and the plunger is attracted and released, it is conventionally used as shown in the circuit in Figure 1 to prevent vibrations caused by alternating current during attraction and release. Similar to electric and magnetic contactors, there are an A contact, a contact that changes from an open circuit to a closed circuit when the coil is energized, and a B contact, a transition point that changes from a closed circuit to an open circuit when the coil is energized, and these are connected to the plunger. When these contacts are opened, discharge occurs at the contact 11A1 and a spark is generated.
昆四ゴ接点16げ励磁コイル7の励磁によって閉路から
開路に移る接点a、及び1肋愚コイル8の励磁によって
閉路から開路に移る接点すとから構成σれる。このうぢ
釈放時の火花に殆んど無視できる溜゛度であるが、投入
11;jjの接点す開放のときの放電が大きく、特(こ
このときの火花発生の防止が望′ま れプこ。The contact 16 is composed of a contact a which changes from a closed circuit to an open circuit by the excitation of the excitation coil 7, and a contact σ which changes from a closed circuit to an open circuit by the excitation of the single coil 8. Although the spark generated during this discharge is almost negligible, the discharge is large when the contact of the input terminal 11; Puko.
本発明はこの問題を、部品点数ケ増やすことなく、解決
しようとしてなされた改良発明であって、励磁コイルと
永久磁石とが直列に配設δれる磁気回路と前記磁気回路
の可動部分と連結δれh[開方向に弾発する袈素を含む
電、気回路開閉用可戦1接触子とこれに対設する固定接
触子′fc備え、t?iJ記励磁コイ/L/に前記永久
磁石が略々未着磁の状態から略々完全着磁する起磁力の
交流を印加し、寸だ前記起磁力より低い起磁力の交流を
印加することによ−り電気回路を開閉するようにした自
己保持型電磁接触器を要旨とする。The present invention is an improved invention made in an attempt to solve this problem without increasing the number of parts, and includes a magnetic circuit in which an excitation coil and a permanent magnet are arranged in series, and a movable part of the magnetic circuit is connected δ. h[Equipped with 1 contactor for opening and closing electric and air circuits including a shank that springs in the opening direction, and a fixed contactor'fc installed opposite thereto, t? Applying an alternating current of a magnetomotive force to the excitation coil /L/ that changes the permanent magnet from an almost unmagnetized state to almost completely magnetizing it, and applying an alternating current of a magnetomotive force that is almost lower than the magnetomotive force. The gist of this paper is a self-holding electromagnetic contactor that opens and closes an electric circuit.
こ−で、励磁コイルと永久磁石とが直列に配設されると
は、例えば第2図に示フー如き配置であって、励磁コイ
ル8の発生する磁化の方向と永久磁石6の磁化方向とが
同一方向となるように配設されることを云う。また本発
明で使用される永久磁石はフエフイト磁石希土類磁石の
ような保磁力の大なるものよ−りも、例えばアルニコ鋳
造磁石のよう々低保磁力のものの方が望ましい。In this case, the excitation coil and the permanent magnet are arranged in series, for example, as shown in FIG. This means that they are arranged so that they are in the same direction. Further, it is preferable that the permanent magnet used in the present invention has a low coercive force, such as an alnico cast magnet, rather than a permanent magnet having a high coercive force, such as a Fehuite rare earth magnet.
以下、冥流側として掲げる図面により本発明を説IQI
する。Hereinafter, the present invention will be explained with reference to the drawings listed as the undercurrent side.IQI
do.
第2図に本発明の自己保J・、デ型重?ヒt・接触器の
機J1”を例荀示す模式図、第3図に同回路図である。Figure 2 shows the self-protection of the present invention. FIG. 3 is a schematic diagram showing an example of the contactor machine J1.
外枠1内には励磁コイ/l/8紮内蔵したフレームヨー
ク2を収容する。フレームヨーク2の中火にに非磁慴:
肯5孕立設し、非磁性管5の底部には前記フレームヨー
ク2に接して上下感(寅幅1面を固定コア494で挾ん
だ永久磁石6を収容し、永久磁石6を直列に配置した磁
気回路7f:構成する。第21図中の破線に磁化の方向
を示している。Inside the outer frame 1, a frame yoke 2 containing an excitation coil/l/8 ligature is housed. Non-magnetic to medium heat of frame yoke 2:
The bottom of the non-magnetic tube 5 is in contact with the frame yoke 2, and houses a permanent magnet 6 with one side of the width sandwiched between fixed cores 494, and the permanent magnets 6 are arranged in series. Arranged magnetic circuit 7f: configured. The direction of magnetization is shown by the broken line in FIG.
永久磁石6の上方には非磁性管5に沿って上下に摺動可
能の〕”ランジャー3を挿入し、プランジャー3の上部
に固着する非磁性の支持部材9の上端に+bJ動接点1
3を、また可動接点13に向きあう外枠1上に固定接点
14ヲ設けるとともに、プランジャー3を永久磁石6か
ら島(L間する方向に働く弾発要素としてヌブリング1
0を支持部材9の両腕11と外枠1 f14.iに設け
てるる。Above the permanent magnet 6, a plunger 3 that can slide up and down along a non-magnetic tube 5 is inserted, and a +bJ moving contact 1 is attached to the upper end of a non-magnetic support member 9 fixed to the top of the plunger 3.
A fixed contact 14 is provided on the outer frame 1 facing the movable contact 13, and a nubling 1 is provided as a resilient element that acts in the direction between the plunger 3 and the permanent magnet 6 (L).
0 to both arms 11 of the support member 9 and the outer frame 1 f14. It is set up on i.
い捷、永久磁石6が未着磁の状態とすると、第31ン1
のスイッチイ′な閉とすることにょシ励磁コイル8に交
流rl−i:流が印加δれ、従来の電磁石と同様の吸引
作用が起り、)゛ランジャー3に固定コア4に吸引びれ
、電気回路の可動接点13と固定接点14が閉成芒れる
が、前記吸引作用と同時に永久磁石6は着磁σれる。し
かしこの場合永久磁石6の着磁の方向(極性)が励磁コ
イル8の)励磁方向と同一となるため、ヌイッチイが閉
の状態の1−でも、フ”フンシャー3が振動することは
ない。従って、本発明接触器では第3図電気回路に示す
如< iil記第1図の回路で必要でめった接点すを無
くすることができ、こ\で発生した大きな放電の問題を
解消できる。寸たヌイッチイを開にしても永久磁石6に
スイッチイが開放の瞬間に着磁芒れていた方向の磁力で
自己保持が行われ、電気回路の接点1B、14け閉成8
れた一!(の状態を維持する。In this case, if the permanent magnet 6 is in an unmagnetized state, the 31st magnet 6
When the switch is closed, an alternating current (rl-i) is applied to the excitation coil 8, and an attraction similar to that of a conventional electromagnet occurs. The movable contact 13 and fixed contact 14 of the circuit are closed, but the permanent magnet 6 is magnetized σ at the same time as the above-mentioned attraction action. However, in this case, the direction of magnetization (polarity) of the permanent magnet 6 is the same as the excitation direction of the excitation coil 8, so even in the closed state of 1-, the flap 3 does not vibrate. In the contactor of the present invention, as shown in the electrical circuit of Fig. 3, it is possible to eliminate the contact point which is rarely needed in the circuit of Fig. Even if the switch is opened, the permanent magnet 6 is self-retained by the magnetic force in the direction in which the switch was magnetized at the moment of opening, and the electrical circuit contacts 1B and 14 are closed 8.
I got it! (Maintain the state of.
ヌイツチイを開放する際の放電ば殆んど認められない程
度である、
電気回路の接点13.14 ’(ir開放する場合にス
イッチ口を閉にすると励磁コイル8に瞬時交流が印加さ
れ接点aに開放される。When the electric circuit contacts 13 and 14' are closed, an instantaneous alternating current is applied to the excitation coil 8 and the electric current is applied to the contact a. It will be released.
図示例でに励磁コイル8を1個で吸引、釈放の両動作を
行わしめるため、抵抗Rを励磁コイルと接点aの間に挿
入した。抵抗Rを挿入しない場合、吸着時に行なう着磁
と同一で、釈放可能領域(は保磁力Hc付近の一瞬のみ
であるため4)1・夾な釈)liが行われ難い。抵抗R
を挿入することで励磁コイル8の起磁力を前記吸着時の
起磁力よ−り低下芒せ、最大起磁力を保磁力Hc近辺以
下にすることで釈放(ζ確火に行われるようになる。こ
の抵抗Rを用いる代りに上記のような最大起磁力をもつ
釈放用コイルを別に設けてもよいことに勿論である。In the illustrated example, a resistor R is inserted between the exciting coil and the contact point a in order to perform both attracting and releasing operations with one exciting coil 8. If the resistor R is not inserted, it is the same as the magnetization performed at the time of adsorption, and the releasable region (4) 1. li is difficult to occur because it is only for a moment near the coercive force Hc. Resistance R
By inserting the magnetomotive force of the excitation coil 8, the magnetomotive force of the excitation coil 8 is made to be lower than the magnetomotive force at the time of attraction, and the maximum magnetomotive force is made to be below the vicinity of the coercive force Hc, so that release (ζ is carried out with certainty). Of course, instead of using this resistor R, a release coil having the maximum magnetomotive force as described above may be provided separately.
上記の如くQてして釈放用の交流が励磁コイル8に印加
されると、永久磁石6の出す磁束と同一方向の交流半サ
イクルtr:i永久磁石6の動作点7第1象限に移行8
せるのみで釈放l/rCに有効でないが、残り半サイク
ルは永久磁石6の吸着部に出す磁束を打ち消す方向のた
め永久磁石6による吸引吸着力を低下はせ、該吸引吸着
力が弾発要素10の弾発力以下になると空隙が生じ、磁
石動作点が低下する方向にな一す、以後これが加速芒れ
て釈放てれ、電気回路の接点13.14は開放てれる。As described above, when a releasing alternating current is applied to the excitation coil 8, the alternating current half cycle tr:i in the same direction as the magnetic flux emitted by the permanent magnet 6 moves to the first quadrant 7 of the operating point of the permanent magnet 6.
Although it is not effective for releasing l/rC, the remaining half cycle is in the direction of canceling out the magnetic flux sent to the attraction part of the permanent magnet 6, so the attraction force by the permanent magnet 6 is reduced, and this attraction force becomes the elastic element. When the elastic force becomes less than 10, an air gap is created and the magnet operating point is aligned in the direction of lowering, which is then accelerated and released, and the contacts 13 and 14 of the electric circuit are opened.
この釈放時における接点aの火花発生に従来の電磁石方
式の接触器と同程度でめる。釈放後の永久磁石6げ11
15々脱硫、された状態で、勿論弾発要素IOに抗して
自己保持する吸着力はなく、次の吸引に永久磁石6が略
々未着磁の状態から励磁されて行われる。The generation of sparks at contact a during this release is comparable to that of conventional electromagnetic contactors. Permanent magnet 6ge 11 after release
In the desulfurized state, of course, there is no suction force to self-hold against the elastic element IO, and the next suction is performed by exciting the permanent magnet 6 from a substantially unmagnetized state.
実施例として、永久磁石6に保磁力が約6000eの角
型性の良好なFe −Cr −Co磁石を使用し電源電
圧220■で吸引時励磁コイル8の最大起磁力が永久磁
石の保磁力の3倍以上となるよう設定した。また釈放用
交流の電圧げ抵抗Rによシ120vに迄低下させたが、
確実な釈放が行われた。使用交流に商用60ザイクルで
あった。As an example, a Fe-Cr-Co magnet with a good squareness and a coercive force of about 6000e is used as the permanent magnet 6, and the maximum magnetomotive force of the excitation coil 8 during attraction is equal to the coercive force of the permanent magnet at a power supply voltage of 220μ. It was set to be more than three times as large. In addition, the voltage of the AC voltage for release was lowered to 120V by the resistor R, but
A guaranteed release was made. The AC used was a commercial 60 cycles.
上述の妬く、不発明によれば、現在用いられている電磁
石式の電磁接触器に較べ、構造を複雑化することなく、
省電力型で放電障害のない自己保持型電磁接触器を得る
ことが可能で、工業的価値が大きい。According to the above-mentioned invention, the structure is not complicated compared to the electromagnetic contactor currently used.
It is possible to obtain a self-holding electromagnetic contactor that is energy-saving and free from discharge failure, and has great industrial value.
第1図に先の発明に係る交流式自己保持型電磁接触器の
動作電気回路図。第2図に本発明に係る交流式自己保持
型電磁接触器の一例で機lidを示す模式図。第3図(
ζ第2図電磁払触器の動作電気回路図である。
3:〕”ランシャー、4:同定コア、6:永久磁石、7
:抵抗、8:励磁コイノペ lo:弾発要素(ヌフ”リ
ンク)、13:可重′:接触イ、14:固定接触子、1
5:電源、イイロロ′:開閉フイッチ、16:[点−1
ζ
第 1 図
第 2 図
第 3 図FIG. 1 is an operational electrical circuit diagram of the AC self-holding electromagnetic contactor according to the above invention. FIG. 2 is a schematic diagram showing the lid of an example of the AC self-holding electromagnetic contactor according to the present invention. Figure 3 (
ζ FIG. 2 is an operational electrical circuit diagram of the electromagnetic contact remover. 3:]” Lansher, 4: Identification core, 6: Permanent magnet, 7
: Resistance, 8: Excitation Koinope lo: Elastic element (Nuf" link), 13: Weightable': Contact a, 14: Fixed contact, 1
5: Power supply, Iiroro': Open/close switch, 16: [Point -1
ζ Figure 1 Figure 2 Figure 3
Claims (1)
気回路と前記磁気回路の可動部分と連結てれ離間方向に
弾発する要素を含む電気回路開閉用可動接触子とこれに
対設する固定接触子を備え、前記励磁コイルに前記永久
磁石が略々未着磁の状態から略々完全着磁する起磁力の
交流を印加し、また前記起磁力よシ低い起71並力交流
を印加することによシミ気回路をl5tj閉すべくなし
たことを特徴とする自己保持型電磁接触器。(1) Excitation coil and permanent value: A magnetic circuit in which stones are arranged in series, a movable contact for opening and closing an electric circuit including an element that is connected to a movable part of the magnetic circuit and springs in the direction of separation, and a corresponding the magnetomotive force is lower than the magnetomotive force, and an alternating current of a magnetomotive force is applied to the excitation coil to substantially completely magnetize the permanent magnet from a substantially unmagnetized state; 1. A self-holding type electromagnetic contactor characterized in that the stain circuit is closed by applying 15tj.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3621983A JPS59160929A (en) | 1983-03-04 | 1983-03-04 | Self-holding type electromagnetic contactor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3621983A JPS59160929A (en) | 1983-03-04 | 1983-03-04 | Self-holding type electromagnetic contactor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59160929A true JPS59160929A (en) | 1984-09-11 |
JPH0129290B2 JPH0129290B2 (en) | 1989-06-09 |
Family
ID=12463649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3621983A Granted JPS59160929A (en) | 1983-03-04 | 1983-03-04 | Self-holding type electromagnetic contactor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59160929A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010118206A (en) * | 2008-11-12 | 2010-05-27 | Kyoritsu Keiki Co Ltd | Electromagnetic contactor |
JP2013125745A (en) * | 2011-08-19 | 2013-06-24 | General Electric Co <Ge> | Meter disconnect relay |
-
1983
- 1983-03-04 JP JP3621983A patent/JPS59160929A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010118206A (en) * | 2008-11-12 | 2010-05-27 | Kyoritsu Keiki Co Ltd | Electromagnetic contactor |
JP2013125745A (en) * | 2011-08-19 | 2013-06-24 | General Electric Co <Ge> | Meter disconnect relay |
Also Published As
Publication number | Publication date |
---|---|
JPH0129290B2 (en) | 1989-06-09 |
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