JPS61204913A - Electromagnet device - Google Patents

Electromagnet device

Info

Publication number
JPS61204913A
JPS61204913A JP4489585A JP4489585A JPS61204913A JP S61204913 A JPS61204913 A JP S61204913A JP 4489585 A JP4489585 A JP 4489585A JP 4489585 A JP4489585 A JP 4489585A JP S61204913 A JPS61204913 A JP S61204913A
Authority
JP
Japan
Prior art keywords
transistor
capacitor
coil
iron core
resistor
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.)
Pending
Application number
JP4489585A
Other languages
Japanese (ja)
Inventor
Shizutaka Nishisako
西迫　静隆
Toshikazu Kito
鬼頭　利和
Nobuyoshi Shiyouji
庄司　伸喜
Sadaaki Baba
貞彰 馬場
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP4489585A priority Critical patent/JPS61204913A/en
Priority to KR1019850007970A priority patent/KR860007688A/en
Priority to US06/832,959 priority patent/US4661883A/en
Priority to DE19863606870 priority patent/DE3606870A1/en
Priority to GB08605809A priority patent/GB2173960B/en
Publication of JPS61204913A publication Critical patent/JPS61204913A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1805—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current
    • H01F7/1811—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current demagnetising upon switching off, removing residual magnetism

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Relay Circuits (AREA)

Abstract

PURPOSE:To shorten the release time of a moving core at the shut-off time of the external voltage by connecting a transistor in series with an electromagnetic coil on the d.c. side, connecting a capacitor between the base and the collector of the transistor, and causing the capacitor to be charged with the inductance energy of the electromagnetic coil. CONSTITUTION:A coil 2 is disposed at the positive electrode on the d.c. output side, and an NPN transistor 10 is connected in series with this coil 2. One end of a resistor 8 is connected to the positive electrode side of the coil 2, and one end of a capacitor 9 and one end of the transistor 10 are connected to the negative electrode side of the coil 2. The other end of the resistor 8 and the other end of the capacitor 9 are connected to the base of the transistor 10. With this, when the external switch is turned off, the release time of the moving core is shortened by causing the capacitor 9 to be charged with the inductance energy of the electromagnetic coil 2 thereby to turn off the transistor 10.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、例えば開閉器の接点を開閉するために用い
られる電磁石装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electromagnetic device used for opening and closing contacts of a switch, for example.

〔従来の技術〕[Conventional technology]

第８図および第９図は実開昭５９−５９４．ｊ８号公報
に示された従来の電磁石装置を示す図である。Figures 8 and 9 are from Utility Model Publication No. 59-594. FIG. 2 is a diagram showing a conventional electromagnet device disclosed in Publication No. J8.

図において、（１）は交流を直流に変換する全波整流器
、（２）は直流電流が通電されるコイル、（３）はコイ
ル（２）に流れる電流を制限するための第１のコンデン
サ、（４）は第１の抵抗、（５）はコイル′ＷＬ流を制
限するためのスイッチである。コンデンサ（３）に残留
電荷が残った状態でスイッチ（５）が閉じるので、大き
な放電電流が流れるが、第１の抵抗（４）はこの放電電
流を抑制するために設けられている。In the figure, (1) is a full-wave rectifier that converts alternating current to direct current, (2) is a coil through which direct current is applied, (3) is a first capacitor for limiting the current flowing to coil (2), (4) is a first resistor, and (5) is a switch for limiting the flow of the coil 'WL. Since the switch (5) closes with residual charge remaining in the capacitor (3), a large discharge current flows, but the first resistor (4) is provided to suppress this discharge current.

（６）は固定鉄心であり、；イル（２）により励磁され
る。（７）は可動鉄心で固定鉄心（６）に吸引される。(6) is a fixed iron core, which is excited by the coil (2). (7) is a movable iron core that is attracted to the fixed iron core (6).

また、スイッチ（５）は可動鉄心（７）と連動して動作
し、可動鉄心（７）が解放状態ではスイッチ（５）は閉
じており、可動鉄心（７）が吸引動作を開始してから後
に、可動鉄心（７）が固定鉄心（６）に吸着する前に開
くようになっている。In addition, the switch (5) operates in conjunction with the movable core (7), and when the movable core (7) is in the released state, the switch (5) is closed, and after the movable core (7) starts the suction operation. Later, the movable iron core (7) opens before adhering to the fixed iron core (6).

上官ｅのように構成された従来の電磁石装置では、交流
電圧がこの電磁石装置に印加されると、スイッチ（５）
、全波整流器（１）を経由してコイル（２）に電流が流
れる。その結果、固定鉄心（６）が励磁され、可動鉄心
（７）が固定鉄心（６）に吸引される。この可動鉄心（
７）が固定鉄−Ｃｒ　（６）に吸引される前にスイッチ
（５）が開き、第１のコンデンサ（３）で限流された電
流がコイル（２）に流れ、可動鉄心（７）は固定鉄心（
６）に保持される。In a conventional electromagnetic device configured as in Shangguan e, when an alternating current voltage is applied to this electromagnetic device, the switch (5)
, a current flows through the coil (2) via the full-wave rectifier (1). As a result, the fixed iron core (6) is excited and the movable iron core (7) is attracted to the fixed iron core (6). This movable iron core (
7) is attracted to the fixed iron -Cr (6), the switch (5) opens, the current limited by the first capacitor (3) flows to the coil (2), and the movable iron core (7) Fixed core (
6) is maintained.

以上の動作によす、ＯＪ動鉄心（７）は空隙が大きいと
き、大きな磁力で吸引されて、吸引後は小さな磁力で保
持されることになる。従って、保持時のコイル消費電力
が小さく、全波整流器（１）によって直流に変換され、
コイル（２）には直流１流が流れるので、電磁騒音は発
生しない。According to the above operation, when the air gap is large, the OJ moving iron core (7) is attracted by a large magnetic force, and after being attracted, it is held by a small magnetic force. Therefore, the power consumption of the coil during holding is small, and it is converted to DC by the full-wave rectifier (1).
Since a single DC current flows through the coil (2), no electromagnetic noise is generated.

次に、印加電圧が除去されると、コイル（２）のインダ
クタンスエネルギによって第４図の１で示すフライホイ
ール回路が形成され、コイル（２）のし−８回路による
電流の減衰が始まり、電磁石の吸引力が図示のない引き
外しバネの反抗力より低くなった時点で可動鉄心（７）
は解放され、固定鉄心（６）から離れて上記引き外しバ
ネにより押し上げられるよりになっている。Next, when the applied voltage is removed, the inductance energy of the coil (2) forms a flywheel circuit as shown by 1 in Figure 4, and the current starts to attenuate through the 8th circuit of the coil (2). When the suction force of the movable iron core (7) becomes lower than the reaction force of the unillustrated trip spring, the movable iron core (7)
is released, separated from the fixed iron core (6), and pushed up by the tripping spring.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上記のような従来の電磁石装置では、外部スイッチ等に
よってコイル入力がしゃ断されても、′電磁石コイル（
２）のエネルギにより、整流器（１）を介したフライホ
ール効果の作用で電流が減衰しながら流れ続けるので、
可動鉄心の解放時間が長くなる。In the conventional electromagnet device as described above, even if the coil input is cut off by an external switch etc., the electromagnet coil (
Due to the energy in 2), the current continues to flow while attenuating due to the flyhole effect via the rectifier (1).
The release time of the movable core becomes longer.

この傾向は電磁石装置が大きくなる程著しく、即ち、電
磁コイル（２）のインダクタンスが大きい程％放時間が
長くなってζ精密な位置制御を行なわせる開閉器等の接
点開閉に用いるには不向きである問題があった。This tendency becomes more pronounced as the electromagnetic device becomes larger; in other words, the larger the inductance of the electromagnetic coil (2), the longer the % release time becomes, making it unsuitable for use in opening and closing contacts of switches, etc. that require precise position control. There was a problem.

この発明はかかる問題点を解消するためになされたもの
で、可動鉄心の解放時間を短縮させるとともに、部品点
数を低減させた安価な電磁石装置をイ与ることを目的と
する。This invention has been made to solve these problems, and aims to shorten the release time of the movable core and provide an inexpensive electromagnet device with a reduced number of parts.

〔問題点を解決するだめの手段〕[Failure to solve the problem]

この発明に係る電磁石装置は、直流出力側の正極にコイ
ルを配設し、とのコイルと直列にＮＰＮ形トランジスタ
を接続して、上記コイルの正極側には抵抗の一端を、負
極側はコンデンサの一端とトランジスタの一端とを接続
し、上記抵抗の他端とコンデンサの他端とをトランジス
タのベースに接続したものである。The electromagnet device according to the present invention has a coil disposed at the positive pole of the DC output side, an NPN transistor connected in series with the coil, one end of the resistor connected to the positive pole side of the coil, and a capacitor connected to the negative pole side of the coil. One end of the resistor is connected to one end of the transistor, and the other end of the resistor and the other end of the capacitor are connected to the base of the transistor.

〔作　用〕[For production]

この発明における電磁石装置は、外部スイッチをオフ状
態にｊ〜た場合、電磁コイルのインダクタンスエネルギ
をコンデンサに充電させ、トランジスタをオフ状態にさ
せることにより可動鉄心の解放時間が短縮化される。In the electromagnet device according to the present invention, when the external switch is turned off, the inductance energy of the electromagnetic coil charges the capacitor and the transistor is turned off, thereby shortening the release time of the movable core.

〔実施例〕〔Example〕

第１図はこの発明の一実施例である電磁石装置を示す回
路図で、符号（１）〜（５）は従来例を示した第８図に
おける同符号のものと同一部分である。（１０は直流回
路の電磁コイル（２）のＴｔ流をスイッチングとして用
いるＮＰＮ形のトランジスタ、（８）はこのトランジス
タθｑのバイアス抵抗で、一端を電磁コイル（２）の正
極に接続しである。（９）はトランジスタα０のバイア
スを安定させるとともに、このトランジスタα１をオフ
状態にさせたとき、電磁コイル（２）の自己エネルギ（
逆起電力）を吸収させるコンデンサであり、一端を電磁
コイル（２）の負極側に接続している。トランジスタＣ
１［）のコレクタはｉｔｓコイル（２）の負極側端子と
接続され、ベースは上記バイアス抵抗（８）の他端子と
接続され、エミッタは全波整流器（１）の直流側負極端
子に接続されている。FIG. 1 is a circuit diagram showing an electromagnet device according to an embodiment of the present invention, and symbols (1) to (5) are the same parts as those with the same symbols in FIG. 8 showing a conventional example. (10 is an NPN type transistor that uses the Tt current of the electromagnetic coil (2) of the DC circuit as switching, and (8) is a bias resistor of this transistor θq, one end of which is connected to the positive pole of the electromagnetic coil (2). (9) stabilizes the bias of the transistor α0, and when the transistor α1 is turned off, the self-energy (
This is a capacitor that absorbs back electromotive force (back electromotive force), and one end is connected to the negative pole side of the electromagnetic coil (2). transistor C
The collector of 1[) is connected to the negative terminal of the its coil (2), the base is connected to the other terminal of the bias resistor (8), and the emitter is connected to the negative terminal of the full-wave rectifier (1). ing.

上記のように構成されたこの発明による電磁石装置にお
いては、交流電圧が入力端子に印加されると、スイッチ
（５）、全波整流器（１）全経由してバイアス抵抗（８
）からトランジスタα１のベースにバイアス電圧が加え
られる。第２図は可動鉄心（７）が固定鉄心（６）に投
入され、保持状態を経て解放に至る１での、コレクタ・
エミッタ電圧、コレクタ電流。In the electromagnet device according to the present invention configured as described above, when an alternating current voltage is applied to the input terminal, it passes through the switch (5) and the full-wave rectifier (1) to the bias resistor (8).
) applies a bias voltage to the base of the transistor α1. Figure 2 shows the collector and
emitter voltage, collector current.

コンデンサ！王、コンデンサ電流、ベース電流およびバ
イアス抵抗（８）に流れる￥ｌＬ流それぞれの時間経過
にともなう変化をしめした線図であり、上記のバイアス
電圧が加えられると、第２図（ホ）および第３図のＩＢ
で示すようにペース電流１３が流れ、コイル（２）より
トランジスタαｑのコレクタおよびエミッタに電流が流
れ始める。このために、固定鉄心（６）が励磁され、可
動鉄心（７）が励磁された固定鉄心（６）に吸引される
。Capacitor! This is a diagram showing changes over time in the capacitor current, the base current, and the ¥1L current flowing through the bias resistor (8), and when the above bias voltage is applied, IB in Figure 3
A pace current 13 flows as shown by , and current begins to flow from the coil (2) to the collector and emitter of the transistor αq. For this purpose, the fixed iron core (6) is energized, and the movable iron core (7) is attracted to the energized fixed iron core (6).

また、上記の固定鉄心（６）が吸引される前にスイッチ
（５）が開き、コンデンサ（３）で限流されていた電流
がコイル（２）Ｋ流れるので、可動鉄心（７）は固定鉄
心（６）に保持されることになる。この保持状態では、
第２図に）、（ホ）、（へ）および第４図に示すように
トランジスタαｑのペースへはバイアス抵抗（８）から
電流ＩＲ，コンデンサ（９）から電流ＩＣ２が供給され
、バイアスとして安定した電流が流れる。In addition, the switch (5) opens before the fixed core (6) is attracted, and the current that was limited by the capacitor (3) flows through the coil (2) K, so the movable core (7) is connected to the fixed core. (6) will be held. In this holding state,
As shown in Figure 2), (E), (E) and Figure 4, current IR is supplied from the bias resistor (8) and current IC2 is supplied from the capacitor (9) to the pace of transistor αq, and the bias is stable. A current flows.

次に、外部よりの印加電圧がなくなると、第２図および
第５−に示すようにコイル（２）のインダクタンスエネ
ルギ（逆起電力）によってコンデンサ（９）への充電が
開始されるとともに、トランジスタαＱのコレクター・
エミッタ間を通って整流器（１）とコイル（２）との間
でフライホイール回路が形成され、Ｌ、Ｃ，Ｒ回路によ
り電流減衰が始まり、固定鉄心（６）の吸引力が図示の
ない引張りばねの力より弱くなった時点で、可動鉄心（
７）が解放されることになる。Next, when the externally applied voltage is removed, the inductance energy (back electromotive force) of the coil (2) starts charging the capacitor (9), as shown in Figures 2 and 5-. αQ collector
A flywheel circuit is formed between the rectifier (1) and the coil (2) through the emitters, and current attenuation begins due to the L, C, and R circuits, and the attractive force of the fixed iron core (6) causes a pull (not shown). When the force becomes weaker than the spring force, the movable iron core (
7) will be released.

この解放に豪する時間は、コンデンサ（９）の容量の値
が小さくなる程短くなるが、逆にコンデンサ光重、電圧
およびコレクタ・エミッタ電圧が上昇するので適度の値
に選定する必要がある。しかし、開閉器等に用いる電磁
石装置では開閉回数が数百刃口程度に保証されているの
で、コンデンサ（９）の容量低下が発生した場合には、
充電電圧が上昇するとともにトランジスタαＯに対して
も同様に電圧が上昇するので、これらの電圧上昇をバリ
スターαηによって抑制して上昇電圧のピーク値をカッ
トするようになっている。The time required for this release becomes shorter as the capacitance of the capacitor (9) decreases, but conversely, the light weight, voltage, and collector-emitter voltage of the capacitor increase, so it is necessary to select an appropriate value. However, since electromagnetic devices used in switches and the like are guaranteed to open and close within several hundred times, if the capacitance of the capacitor (9) decreases,
As the charging voltage increases, the voltage of the transistor αO also increases, so these voltage increases are suppressed by the varistor αη to cut the peak value of the increased voltage.

なお、上記実施例ではコイル（２）の負極側とトランジ
スタαＱとの間にコンデンサ（９）を接続した場合につ
いて説明したが、第６図に示すようにコンデンサ（９）
と抵抗Ｑ１とを直列に接続してもよく、また第７図に示
すようにトランジスタ卸をＰＮＰ型のものを使用しても
上記実施例と同様の効果を奏する。In the above embodiment, the case where the capacitor (9) is connected between the negative electrode side of the coil (2) and the transistor αQ is explained, but as shown in FIG.
and the resistor Q1 may be connected in series, or even if a PNP type transistor is used as the transistor shown in FIG. 7, the same effect as in the above embodiment can be obtained.

〔発明の効果〕〔Effect of the invention〕

この発明は以上説明したとおり、電磁石装置の直光側に
電磁コイルと直列にトランジスタを接続し１、電磁コイ
ルのインダクタンスエネルギをコンデンサに充電させる
ことにより、外部電圧のしゃ断時における可動鉄心の解
放時間を短縮するように構成したので、精密な位置制御
を行なわせる開閉器等に用いられ、かつ部品数を低減さ
せた安価な電磁石装置が得られる効果がある。As explained above, this invention connects a transistor in series with an electromagnetic coil on the direct light side of an electromagnet device, and charges a capacitor with the inductance energy of the electromagnetic coil, thereby reducing the release time of the movable core when the external voltage is cut off. Since the structure is configured to shorten the time, it is possible to obtain an inexpensive electromagnet device that can be used in a switch or the like that performs precise position control and has a reduced number of parts.

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

第１図はこの発明の一実施例の電磁石装置を示す回路図
、第２図は第１図の回路における可動鉄心とトランジス
タとの動作を説明する線図、第６図〜第５図は第１図の
回路におけるトランジスタを中心とした動作を説明する
回路図、第６図および第７図はこの発明の他の実施例を
示す回路図、第８図および第９図は従来の電磁石装置を
示す同図において、（１）は全波整流器、（２）はコイ
ル、（３）は第１のコンデンサ、（４）は第１の抵抗、
（５）はスイッチ、（８）はバイアス抵抗、（９）は第
２のコンデンサ、αＱはトランジスタ。 なお、図中の同一符号は同一または相当部分を示す。FIG. 1 is a circuit diagram showing an electromagnet device according to an embodiment of the present invention, FIG. 2 is a diagram explaining the operation of the movable iron core and the transistor in the circuit of FIG. 1, and FIGS. A circuit diagram illustrating the operation of the circuit shown in FIG. 1 centered on the transistor, FIGS. 6 and 7 are circuit diagrams showing other embodiments of the present invention, and FIGS. 8 and 9 are circuit diagrams showing a conventional electromagnetic device. In the same figure, (1) is a full-wave rectifier, (2) is a coil, (3) is a first capacitor, (4) is a first resistor,
(5) is a switch, (8) is a bias resistor, (9) is a second capacitor, and αQ is a transistor. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (2)

【特許請求の範囲】[Claims] （１）第１のコンデンサと、この第１のコンデンサに第
１の抵抗を介して直列に接続された全波整流器と、この
全波整流器の直流側に接続された電磁コイルと、この電
磁コイルに貫通して設けられた固定鉄心と、この固定鉄
心に吸引される可動鉄心と、この可動鉄心が吸引動作を
始めた後に開路され解放動作を開始した後に閉路される
スイッチとを備え、このスイッチが上記第１のコンデン
サに並列接続された装置において、上記電磁コイルと直
列にトランジスタ、並列にバイアス抵抗を設けて上記ト
ランジスタのベースに接続し、このトランジスタのベー
スとコレクター間に第２のコンデンサを接続したことを
特徴とする電磁石装置。(1) A first capacitor, a full-wave rectifier connected in series to this first capacitor via a first resistor, an electromagnetic coil connected to the DC side of this full-wave rectifier, and this electromagnetic coil. A fixed iron core that is provided through the fixed iron core, a movable iron core that is attracted to the fixed iron core, and a switch that is opened after the movable iron core starts the suction operation and closed after the movable iron core starts the release operation. is connected in parallel to the first capacitor, a transistor is provided in series with the electromagnetic coil, a bias resistor is provided in parallel and connected to the base of the transistor, and a second capacitor is connected between the base and collector of the transistor. An electromagnetic device characterized by being connected. （２）トランジスタのベースとコレクターとの間に直列
に接続したことを特徴とする特許請求の範囲第１項記載
の電磁石装置。(2) The electromagnet device according to claim 1, wherein the electromagnet device is connected in series between the base and collector of a transistor.
JP4489585A 1985-03-08 1985-03-08 Electromagnet device Pending JPS61204913A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP4489585A JPS61204913A (en) 1985-03-08 1985-03-08 Electromagnet device
KR1019850007970A KR860007688A (en) 1985-03-08 1985-10-28 Electromagnet Device
US06/832,959 US4661883A (en) 1985-03-08 1986-02-26 Electromagnet apparatus with shortened armature release time
DE19863606870 DE3606870A1 (en) 1985-03-08 1986-03-03 ELECTROMAGNET ARRANGEMENT WITH SHORTENED ANCHOR RELEASE TIME
GB08605809A GB2173960B (en) 1985-03-08 1986-03-10 Electromagnet apparatus with shortened armature release time

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4489585A JPS61204913A (en) 1985-03-08 1985-03-08 Electromagnet device

Publications (1)

Publication Number Publication Date
JPS61204913A true JPS61204913A (en) 1986-09-11

Family

ID=12704214

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4489585A Pending JPS61204913A (en) 1985-03-08 1985-03-08 Electromagnet device

Country Status (1)

Country Link
JP (1) JPS61204913A (en)

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