JPH09274841A - Relay provided with displaying function - Google Patents
Relay provided with displaying functionInfo
- Publication number
- JPH09274841A JPH09274841A JP8403496A JP8403496A JPH09274841A JP H09274841 A JPH09274841 A JP H09274841A JP 8403496 A JP8403496 A JP 8403496A JP 8403496 A JP8403496 A JP 8403496A JP H09274841 A JPH09274841 A JP H09274841A
- Authority
- JP
- Japan
- Prior art keywords
- relay
- fixed contact
- break
- contact
- movable contact
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/002—Monitoring or fail-safe circuits
Landscapes
- Relay Circuits (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電磁形リレーに関
し、特に、可動接点の切換りを目視できるよう表示機能
付きリレーに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic relay, and more particularly to a relay having a display function so that switching of movable contacts can be visually observed.
【０００２】[0002]
【従来の技術】従来、リレーの接点の切換えの良否の確
認は、感動電圧を印加し、可動接点がメイク接点から、
ブレーク接点に切換ったか否か、又はその逆の動作、即
ち、ブレーク接点から、メイク接点に切換った否かを、
テスターあるいはブザー等を用いて、可動接点とブレー
ク接点、あるいは、可動接点と、メイク接点の導通状態
を確認していた。2. Description of the Related Art Conventionally, a contact voltage of a relay is applied to confirm whether switching of a contact of a relay is good or not.
Whether or not the break contact is switched, or vice versa, that is, whether or not the break contact is switched to the make contact,
A tester or a buzzer was used to check the conduction state of the movable contact and the break contact, or the movable contact and the make contact.
【０００３】[0003]
【発明が解決しようとする課題】従来の技術に於いて、
可動接点と固定接点の導通の確認は、可動接点と、メイ
ク接点、又は可動接点と、ブレーク接点のそれぞれに導
通の確認をテスターまたはブザー等を用いてしなければ
ならないため労力を要していた。特に、リレーを多く使
用する制御装置の検査等では非常に多くの時間を要する
問題を有していた。DISCLOSURE OF THE INVENTION In the prior art,
The confirmation of the continuity between the movable contact and the fixed contact requires labor by using a tester or a buzzer to confirm the continuity of each of the movable contact, the make contact, the movable contact, and the break contact. . In particular, the inspection of a control device that uses many relays has a problem that it takes a very long time.
【０００４】この問題を解決するため、従来より例え
ば、特開昭６２−５８５３２号公報には、駆動回路に発
光ダイオードを設けて、駆動電圧が印加された場合に、
当該発光ダイオードを目視できる技術が開示されてい
た。In order to solve this problem, conventionally, for example, in Japanese Patent Laid-Open No. 62-58532, a drive circuit is provided with a light emitting diode, and when a drive voltage is applied,
The technique of visually observing the said light emitting diode was disclosed.
【０００５】しかし、本技術では、駆動電圧の有無は検
出できるが、実際にリレー接点の検出はできないため上
記問題は解決できない。However, according to the present technology, the presence or absence of the drive voltage can be detected, but the relay contact cannot be actually detected, and therefore the above problem cannot be solved.
【０００６】本発明は、リレーの可動接点を固定接点の
メイク側及びブレーク側に切換える際、正常動作してい
るか又は、不動作状態かをリレー本体に取り付けられて
いる発光ダイオードの点灯状態を確認しているだけで即
座に確認できる表示機能付きリレーを提供することを目
的とする。According to the present invention, when the movable contact of the relay is switched to the make side and the break side of the fixed contact, it is confirmed whether the light emitting diode attached to the relay body is operating normally or not. The purpose is to provide a relay with a display function that can be instantly checked just by doing.
【０００７】[0007]
【課題を解決するための手段】本発明は、電磁リレーを
ケースに収容した表示機能付きリレーにおいて、前記リ
レーのブレーク固定接点と前記ケースのブレーク固定接
点端子間に接続された抵抗と、前記抵抗に流れる電流を
検出する電流検出手段と、前記電流が所定の値を越えた
場合に前記リレーの接点が導通したことを表示する表示
手段とを具備する。According to the present invention, in a relay having a display function in which an electromagnetic relay is housed in a case, a resistor connected between a break fixed contact of the relay and a break fixed contact terminal of the case, and the resistance. Current detection means for detecting a current flowing through the relay and display means for displaying that the contact of the relay is conductive when the current exceeds a predetermined value.
【０００８】[0008]
【発明の実施の形態】本発明の実施の形態に関して図面
を参照して説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings.
【０００９】図１は、本発明の実施の形態を示すブロッ
ク図である。ここで１００は、電磁形リレーの内部を示
したものである。FIG. 1 is a block diagram showing an embodiment of the present invention. Here, 100 indicates the inside of the electromagnetic relay.
【００１０】本図において、感動コイル３の電源端子１
には正の直流電圧（Ｖ+ ）、電源端子２には負の直流電
圧（Ｖ- ）の電源が供給されることによって、可動接点
６はメイク固定接点５からブレーク固定接点８へ切替わ
る。In the figure, the power supply terminal 1 of the moving coil 3
Is supplied with a positive DC voltage (V + ) and the power supply terminal 2 is supplied with a negative DC voltage (V − ), the movable contact 6 is switched from the fixed make contact 5 to the fixed break contact 8.
【００１１】また、ブレーク固定接点８とブレーク固定
接点端子１２との間には微少抵抗９が挿入されている。
この抵抗９は、リレー接点での電圧低下が無視できる程
小さな抵抗値であり、少なくとも１Ω以下に選ばれる。Further, a minute resistor 9 is inserted between the break fixed contact 8 and the break fixed contact terminal 12.
The resistance 9 has a resistance value so small that the voltage drop at the relay contact can be ignored, and is selected to be at least 1Ω or less.
【００１２】従って、可動接点端子７から入力された信
号は、可動接点６、ブレーク固定接点８を通り、抵抗９
を介してブレーク固定接点端子１２へ出力される。この
可動接点端子７とブレーク固定接点端子１２間に加えら
れた電圧によって発生する抵抗９を流れる電流は、電流
検出回路１０によって検出され、当該電流が所定の値以
上流れたことを判断すると表示回路１１に表示する。Therefore, the signal input from the movable contact terminal 7 passes through the movable contact 6 and the break fixed contact 8 and then to the resistor 9
Is output to the fixed break contact terminal 12 via. The current flowing through the resistor 9 generated by the voltage applied between the movable contact terminal 7 and the fixed break contact terminal 12 is detected by the current detection circuit 10, and when it is determined that the current has flowed over a predetermined value, the display circuit 11 is displayed.
【００１３】一方、感動コイル３の電源端子１，２にそ
れぞれ正の直流電圧（Ｖ+ ）、負の直流電圧（Ｖ- ）が
印加されない場合には、感動コイル３は駆動されない。On the other hand, when the positive DC voltage (V + ) and the negative DC voltage (V − ) are not applied to the power supply terminals 1 and 2 of the moving coil 3, the moving coil 3 is not driven.
【００１４】従って、可動接点６はメイク固定接点５側
に切替っており、可動接点端子７とメイク固定接点端子
４間には閉ループが構成されるが、可動接点端子７とブ
レーク固定接点端子１２間には電流が流れることはな
い。そのため、電流検出回路１０は、抵抗９間を流れる
電流を検出することはできず、当然表示回路１１に表示
することもない。Accordingly, the movable contact 6 is switched to the fixed make contact 5 side, and a closed loop is formed between the movable contact terminal 7 and the fixed make contact terminal 4, but the movable contact terminal 7 and the fixed break contact terminal 12 are formed. No current flows between them. Therefore, the current detection circuit 10 cannot detect the current flowing between the resistors 9 and naturally does not display it on the display circuit 11.
【００１５】尚、オペアンプ２７，２８の電源電圧に
は、電源端子１，２に印加された電圧を用いる。この結
果、電源電圧が印加されない場合には表示回路１１を点
灯することはない。The voltage applied to the power supply terminals 1 and 2 is used as the power supply voltage of the operational amplifiers 27 and 28. As a result, the display circuit 11 is not turned on when the power supply voltage is not applied.
【００１６】図２は、電流検出回路１０と表示回路１１
の実施の形態の一例を示した図である。FIG. 2 shows a current detection circuit 10 and a display circuit 11.
It is a figure showing an example of an embodiment of.
【００１７】本図において２１，２２は、リレー接点間
に印加されるサージ電圧等の過電圧に対して保護するた
めのバリスタである。In the figure, reference numerals 21 and 22 are varistors for protecting against an overvoltage such as a surge voltage applied between relay contacts.
【００１８】抵抗９の両端に発生した電圧Ｖ1 ，Ｖ
2 は、それぞれ高抵抗２３，２４に入力する。なお、Ｖ
1 ，Ｖ2 が大きい値の場合には抵抗２３，２４の前段で
分圧しても良い。また、抵抗２３，２４，２５，２６と
オペアンプ２７によって差動増幅器を構成している。こ
の差動増幅器の出力電圧はオペアンプ２８に入力し、基
準電圧Ｖref と比較する。The voltages V 1 and V generated across the resistor 9
2 is input to the high resistances 23 and 24, respectively. Note that V
When 1 and V 2 are large values, the voltage may be divided before the resistors 23 and 24. Further, the resistors 23, 24, 25 and 26 and the operational amplifier 27 constitute a differential amplifier. The output voltage of this differential amplifier is input to the operational amplifier 28 and compared with the reference voltage V ref .
【００１９】従って、感動コイル３が駆動されて、抵抗
９に電流が流れた場合には、抵抗９間に電圧Ｖ1 ，Ｖ2
間に電位差が発生する。この電位差は、前述した差動増
幅器で増幅され、本増幅器の出力電圧は電圧比較用オペ
アンプ２８で、基準電圧と電圧比較され、基準電圧以上
であった場合には、発光ダイオード３０を点灯する電圧
を出力する。この結果、発光ダイオード３０の点灯によ
ってリレーの駆動状態を表示することができる。Therefore, when the moving coil 3 is driven and a current flows through the resistor 9, the voltages V 1 and V 2 are applied across the resistor 9.
A potential difference occurs between them. This potential difference is amplified by the differential amplifier described above, and the output voltage of this amplifier is compared with the reference voltage by the voltage comparison operational amplifier 28. If the output voltage is equal to or higher than the reference voltage, the voltage for lighting the light emitting diode 30. Is output. As a result, the driving state of the relay can be displayed by turning on the light emitting diode 30.
【００２０】以上示した抵抗９、電流検出回路１０、表
示回路１１等は、チップ部品等を用い小型化が可能なた
め、リレーの内部に実装することができる。Since the resistor 9, the current detection circuit 10, the display circuit 11 and the like shown above can be miniaturized by using chip parts or the like, they can be mounted inside the relay.
【００２１】図３は、リレー１００の外観図を示したも
のである。FIG. 3 is an external view of the relay 100.
【００２２】リレー１００は、リレー用ケース５０内に
図１の回路を内蔵したものであり、また、ケース５０の
下部には電源端子１，２、可動接点端子７、ブレーク固
定接点端子９、メイク固定接点端子４それぞれがリード
端子４０として設けられている。また、リレー１００の
前面には、発光ダイオード３０が取り付けられており、
リレーの接点の状態を目視することができる。The relay 100 has the circuit of FIG. 1 built in a relay case 50, and the power source terminals 1 and 2, the movable contact terminal 7, the fixed break contact terminal 9 and the make terminal are provided in the lower portion of the case 50. Each fixed contact terminal 4 is provided as a lead terminal 40. Further, the light emitting diode 30 is attached to the front surface of the relay 100,
The state of the relay contacts can be visually checked.
【００２３】以上説明した本発明の実施の形態では、１
回路のリレーについて説明したが、複数回路についても
適用できるのは勿論である。In the embodiment of the present invention described above, 1
Although the circuit relay has been described, it is needless to say that it can be applied to a plurality of circuits.
【００２４】[0024]
【発明の効果】本発明は、リレー本体の内部に電流検出
用の抵抗、電流検出回路を具備し、リレー前面に発光ダ
イオードを取り付けることによりリレー接点の切換状態
を目視し、簡単に導通を確認できる効果を有する。According to the present invention, the relay main body is provided with a current detecting resistor and a current detecting circuit, and a light emitting diode is attached to the front surface of the relay to visually check the switching state of the relay contacts and easily confirm the conduction. Has the effect that can.
【００２５】さらに、電流検出回路はリレー駆動電圧に
より動作しているため、リレー駆動制御信号の正常な有
無も同時に判別できる効果も有している。Further, since the current detection circuit operates by the relay drive voltage, it also has an effect of being able to simultaneously determine whether or not the relay drive control signal is normal.
【図１】本発明の実施の形態を表わすブロック図であ
る。FIG. 1 is a block diagram showing an embodiment of the present invention.
【図２】図１の電流検出回路と表示回路を表わす図であ
る。FIG. 2 is a diagram showing a current detection circuit and a display circuit of FIG.
【図３】本発明のリレーの外観図である。FIG. 3 is an external view of a relay of the present invention.
１ （＋）電源端子 ２ （−）の電源端子 ３ 感動コイル ４ メイク固定接点端子 ５ メイク固定接点 ６ 可動接点 ７ 可動接点端子 ８ ブレーク固定接点 ９ 抵抗 １０ 電流検出回路 １１ 表示回路 １２ ブレーク固定接点端子 1 (+) power supply terminal 2 (-) power supply terminal 3 impression coil 4 make fixed contact terminal 5 make fixed contact 6 movable contact 7 movable contact terminal 8 break fixed contact 9 resistance 10 current detection circuit 11 display circuit 12 break fixed contact terminal
Claims (4)
付きリレーにおいて、 前記リレーのブレーク固定接点と前記ケースのブレーク
固定接点端子間に接続された抵抗と、 前記抵抗に流れる電流を検出する電流検出手段と、 前記電流が所定の値を越えた場合に前記リレーの接点が
導通したことを表示する表示手段とを具備することを特
徴とする表示機能付きリレー。1. A relay with a display function in which an electromagnetic relay is housed in a case, and a resistance connected between a break fixed contact of the relay and a break fixed contact terminal of the case, and a current detection for detecting a current flowing through the resistance. A relay with a display function, comprising: a means and a display means for displaying that the contact of the relay is conducted when the current exceeds a predetermined value.
電位を差動増幅器により増幅し、増幅された電圧と所定
の電圧と比較することを特徴とする前記請求項１記載の
表示機能付きリレー。2. The display function according to claim 1, wherein the current detecting means amplifies a potential across the resistor with a differential amplifier and compares the amplified voltage with a predetermined voltage. relay.
けられた発光ダイオードによることを特徴とする請求項
１記載の表示機能付きリレー。3. The relay with a display function according to claim 1, wherein the display means is a light emitting diode provided on the front surface of the case.
吸収用のバリスタを取り付けることを特徴とする請求項
２記載の表示機能付きリレー。4. The relay with a display function according to claim 2, wherein the differential amplifier has a varistor for absorbing a surge voltage attached to an input section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8403496A JPH09274841A (en) | 1996-04-05 | 1996-04-05 | Relay provided with displaying function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8403496A JPH09274841A (en) | 1996-04-05 | 1996-04-05 | Relay provided with displaying function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09274841A true JPH09274841A (en) | 1997-10-21 |
Family
ID=13819254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8403496A Pending JPH09274841A (en) | 1996-04-05 | 1996-04-05 | Relay provided with displaying function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09274841A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120131510A (en) * | 2011-05-25 | 2012-12-05 | 엘에스산전 주식회사 | Electro-magnetic contactor and monitoring system of the same |
| CN106159878A (en) * | 2016-08-05 | 2016-11-23 | 成都新泰高科技术有限公司 | A kind of relay load short circuits, broken circuit detection circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6130947B2 (en) * | 1981-01-07 | 1986-07-17 | Nippon Cable Kk | |
| JPH01197931A (en) * | 1988-02-03 | 1989-08-09 | Matsushita Electric Ind Co Ltd | Relay with operation display |
| JPH0218242B2 (en) * | 1983-11-02 | 1990-04-25 | Nippon Denso Co |
-
1996
- 1996-04-05 JP JP8403496A patent/JPH09274841A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6130947B2 (en) * | 1981-01-07 | 1986-07-17 | Nippon Cable Kk | |
| JPH0218242B2 (en) * | 1983-11-02 | 1990-04-25 | Nippon Denso Co | |
| JPH01197931A (en) * | 1988-02-03 | 1989-08-09 | Matsushita Electric Ind Co Ltd | Relay with operation display |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120131510A (en) * | 2011-05-25 | 2012-12-05 | 엘에스산전 주식회사 | Electro-magnetic contactor and monitoring system of the same |
| CN106159878A (en) * | 2016-08-05 | 2016-11-23 | 成都新泰高科技术有限公司 | A kind of relay load short circuits, broken circuit detection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19990202 |