JPS6089028A - Switching device - Google Patents
Switching deviceInfo
- Publication number
- JPS6089028A JPS6089028A JP19782683A JP19782683A JPS6089028A JP S6089028 A JPS6089028 A JP S6089028A JP 19782683 A JP19782683 A JP 19782683A JP 19782683 A JP19782683 A JP 19782683A JP S6089028 A JPS6089028 A JP S6089028A
- Authority
- JP
- Japan
- Prior art keywords
- relay
- control element
- terminal control
- terminal
- contacts
- 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
Links
Landscapes
- Relay Circuits (AREA)
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】
産業上の利用分野
本発明はリレ〜の接点が開閉されるとき、これらの接点
間に、アークが生ずるのを防止するスイッチング装置に
関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a switching device that prevents arcing between the contacts of a relay when these contacts are opened and closed.
従来例の構成とその問題点
従来、この種のリレーの接点が開閉するときに発生する
接点間のアークを防止する回路において１′１、第１図
に示すように、リレーの接点１と直列に三端子制御素子
２．交流電＃、４．負荷３を接続し、リレーの接点１の
開放および閉成中、三端子２′・−一゛
制御素子２をオフ状態にゲートして、アークを除去する
ようにしているものがある。しかしこのような回路の１
つの欠点は、三端子側＃素子２が交流電源４および負荷
３と直列であるため、負荷３に加えられる電流を扱うの
に充分なだけ大きい連続電流定格を有する三端子側（Ｉ
Ｋ＋素子を必要とすることである。Conventional configuration and its problems Conventionally, in a circuit to prevent arcing between the contacts that occurs when the contacts of this type of relay open and close, 1'1, as shown in Figure 1, has a circuit connected in series with contact 1 of the relay. A three-terminal control element 2. AC power #, 4. There is a device which gates the three terminals 2' and -1' control element 2 to an OFF state to eliminate arcing while the load 3 is connected and the relay contacts 1 are opened and closed. However, one of such circuits
One drawback is that because the three-terminal side #element 2 is in series with the AC source 4 and the load 3, the three-terminal side (I) has a continuous current rating large enough to handle the current applied to the load 3.
This requires a K+ element.
第２図は三端子制御素子２をリレーの接点１と並列に接
続した場合の従来例の回路の一例である。FIG. 2 shows an example of a conventional circuit in which a three-terminal control element 2 is connected in parallel with a contact 1 of a relay.
７．８はリレ−コイル５１Ｃ通電するための直流電源、
６はリレーコイル６に直流電流を通電するのを制御する
ためのスイッチング用のトランジスタを示す。９は抵抗
である。7.8 is a DC power supply for energizing relay coil 51C,
Reference numeral 6 indicates a switching transistor for controlling the supply of direct current to the relay coil 6. 9 is resistance.
上記構成において、トランジスタ６をオン状態にして、
リレーの接点１を閉じようとすると、リレーコイル６に
加えられる電流により三端子制御素子２のゲートをオン
状態にトリガするため、三端子制御素子２がリレーの機
械的な接点１の閉成の旬に導通状態になる。しかし、こ
の構成では、逆に閉成されたリレーの接点１を開こうと
して、３ ”：’
トランジスタ６をオフ状態にして、リレーコイル６に電
流を流さなくした場合リレーの機械的な接点１が開くよ
りも先に、三端子制御素子２が非導通状態となるため、
リレーの接点１都にアーク火花が発生しやすいという問
題があり、更にリレーコイル６に電流が流れている間、
三端子制御素子２のゲート４子に常時、電流が流れてし
まうという問題があった。In the above configuration, the transistor 6 is turned on,
When an attempt is made to close contact 1 of the relay, the current applied to relay coil 6 triggers the gate of three-terminal control element 2 to the ON state, so that three-terminal control element 2 prevents the mechanical closure of contact 1 of the relay. Becomes conductive in season. However, in this configuration, if an attempt is made to open contact 1 of the relay which has been closed, and the transistor 6 is turned off and no current flows through the relay coil 6, the mechanical contact 1 of the relay Since the three-terminal control element 2 becomes non-conductive before it opens,
There is a problem that arc sparks are likely to occur at one contact point of the relay, and furthermore, while current is flowing through the relay coil 6,
There is a problem in that current always flows through the four gates of the three-terminal control element 2.
発明の目的
本発明は、このような従来の問題を解消し小型の三端子
制御素子を用いて、リレーの接点が開く場合【てもアー
クが発生しにくいスイッチング装置を提供するものであ
る。OBJECTS OF THE INVENTION The present invention solves these conventional problems and provides a switching device that uses a small three-terminal control element and is less likely to cause arcing even when a relay contact opens.
発明の構成
本発明のスイッチング装置は、リレーの接点と並列に接
続された三端子制御素子と、この三端子制＃素子とＢ夕
り）’Ｃ接続した負荷と、この負荷に流れる電流を検出
するカレントトランス（以１ｃ、Ｔと略す。）とからな
り、上記構成により、機械的なリレーの接点が閉成する
前に三端子制御素子がオン状態となり、逆に、機械的な
リレーの接点が開放した後で三端子制御素子がオフ状態
となり、アーク発生を防止したものである。Structure of the Invention The switching device of the present invention includes a three-terminal control element connected in parallel with the contacts of a relay, a load connected to the three-terminal element, and a current flowing through this load. With the above configuration, the three-terminal control element is turned on before the mechanical relay contacts are closed, and conversely, the mechanical relay contacts are closed. After opening, the three-terminal control element turns off, preventing arcing.
実施例の説明
以下、添付図面に基づいて本発明の一実施例について説
明する。第３図において、１１はリレーの接点、１２は
このリレーの接点１１と並列に接続された三端子制御素
子、１３は交流電源であり、負荷１４とともに三端子制
御素子１２と直列に接続されている。１６はＣ，Ｔであ
り、その環状鉄心部にリレーの接点１１につながれた導
線１６が通されている。１７は三端子制御素子１２のゲ
ート端子である。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 3, 11 is a relay contact, 12 is a three-terminal control element connected in parallel with the relay contact 11, and 13 is an AC power source, which is connected in series with the three-terminal control element 12 together with a load 14. There is. 16 are C and T, and a conductor 16 connected to the contact 11 of the relay is passed through the annular core portion thereof. 17 is a gate terminal of the three-terminal control element 12.
上記構成において動作を説明すると、リレーの接点１１
が閉じようとして、接点にアークが発生し始め、負荷１
４に通電が始まった時、導線１６に流れる電流により、
三端子−Ｊ御素子１３のゲート端子１了と電力導通端子
Ｔに接続されたり、Ｔ１５の両端子に起電力が発生し、
そのため、三端子節ノ御素子１２のゲートをオン状態に
トリガして、６ −２
三４子制＠累子１２が導通状態となる。リレーの接点１
１が一旦閉成した後は、接点が単に無視できる抵抗を有
するのならば、三端子側１ｌＫｌ素子１２は電力導通端
子Ｔ１−Ｔ２が閉成されているのと同様に竹節され、従
って負荷を流を伝送しない。To explain the operation in the above configuration, the relay contact 11
is about to close, an arc begins to occur at the contact, and load 1
When electricity starts flowing through wire 4, the current flowing through conductor 16 causes
The three terminals are connected to the gate terminal 1 of the J element 13 and the power conduction terminal T, and an electromotive force is generated at both terminals of T15.
Therefore, the gate of the three-terminal node control element 12 is triggered to be on, and the 6-2 three-terminal node control element 12 becomes conductive. Relay contact 1
Once 1 is closed, the three-terminal side 1lKl element 12 is closed in the same way as the power conduction terminals T1-T2 are closed, and therefore carries no load, provided that the contacts have only negligible resistance. does not transmit current.
又、リレーの接点１１を開放しようとした場合、三端子
制＃素子１２の電力導通端子Ｔ、−丁２間に電圧が加わ
り始めるため、三端子制＃素子１２が負荷ＴＬ流を伝送
することになる。従ってリレーの接点１１には三端子制
御素子１２の電力導通端子Ｔ１−１２間に発生するオン
電圧以上の電圧は加わらないため、接点１１にアークが
発生しにくい。Also, when an attempt is made to open the relay contact 11, voltage begins to be applied between the power conduction terminals T and -2 of the three-terminal system #element 12, so that the three-terminal system #element 12 transmits the load TL flow. become. Therefore, since no voltage higher than the on-voltage generated between the power conduction terminals T1 and T12 of the three-terminal control element 12 is applied to the contacts 11 of the relay, arcing is less likely to occur at the contacts 11.
発明の効果
本発明のスイッチング装置は、実施例からあきらかなよ
うＩて、リレーの開成、開放の時にアークを発生しに＜
〈シており、このため、アーク発生に伴う希望しない無
線妨害を生ずることなく、リレーの接点の有効寿命も長
くなる。又、リレーの接点の閉成、開放中三端子制御素
子が短時間の間だけしか導通しないため、小型の三端子
制御素子６ −”
を使用できるものである。Effects of the Invention As is clear from the embodiments, the switching device of the present invention does not generate arcs when the relay is opened or opened.
This also increases the useful life of the relay contacts without causing unwanted radio interference due to arcing. Furthermore, since the three-terminal control element conducts only for a short time while the relay contacts are closed or opened, a small three-terminal control element 6-'' can be used.
第１図と第２図はそれぞれ従来例を示すアーク発生防止
回路図、第３図は本発明の一実施例を示すアーク発生防
止回路図である。
１１・・・・・・リレーの接点、１２・・・・・・三端
子制御素子、３ 、１４ 、 、、、・・・負荷、１５
・・・・・・カレントトランス（Ｃ，Ｔ）。FIGS. 1 and 2 are circuit diagrams for preventing arc occurrence, respectively, showing a conventional example, and FIG. 3 is a circuit diagram for preventing arc occurrence, showing an embodiment of the present invention. 11... Relay contact, 12... Three-terminal control element, 3, 14, ... Load, 15
...Current transformer (C, T).
Claims (1)
三端子制御素子と直列に接続した負荷と、約記三端子制
＃素子のゲート端子に接続され前記負荷に流れる１！流
を検出するカレントトランスとからなるスイッチング装
置。A three-terminal control element connected in parallel with the contacts of the relay, a load connected in series with this three-terminal control element, and a 1! connected to the gate terminal of the three-terminal control element and flowing to the load! A switching device consisting of a current transformer that detects current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19782683A JPS6089028A (en) | 1983-10-21 | 1983-10-21 | Switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19782683A JPS6089028A (en) | 1983-10-21 | 1983-10-21 | Switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6089028A true JPS6089028A (en) | 1985-05-18 |
Family
ID=16380979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19782683A Pending JPS6089028A (en) | 1983-10-21 | 1983-10-21 | Switching device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6089028A (en) |
-
1983
- 1983-10-21 JP JP19782683A patent/JPS6089028A/en active Pending
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