JPH07288076A - Electromagnetic relay - Google Patents
Electromagnetic relayInfo
- Publication number
- JPH07288076A JPH07288076A JP7771294A JP7771294A JPH07288076A JP H07288076 A JPH07288076 A JP H07288076A JP 7771294 A JP7771294 A JP 7771294A JP 7771294 A JP7771294 A JP 7771294A JP H07288076 A JPH07288076 A JP H07288076A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- movable
- piece
- electromagnets
- fixed piece
- 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.)
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Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、電磁力によって駆動さ
れる電磁リレーに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic relay driven by electromagnetic force.
【0002】[0002]
【従来の技術】従来の電磁リレーの公知例としては、特
開平5−114347号に示されるものがあり、図11
及び図12に示すように、電気絶縁体の基板から成る固
定片20に2つの貫通孔21を設け、それぞれ鉄心22
にコイル23を巻設して成る電磁石24を上記貫通孔2
1に挿入して固定片20に電磁石24を取着し、この電
磁石24と対向する可動片25はその中心線を挟んだ両
側に中心部を支点として回動する一対の可動部26が形
成されており、可動部26の電磁石24と対向する面に
は磁性体より成る吸着部27が形成され、さらに、可動
部26の先端には、固定片20の側に吸着されたときに
固定片20に設けられた固定接点29と接離する可動接
点28を設けた構成となっている。2. Description of the Related Art A known example of a conventional electromagnetic relay is shown in Japanese Patent Laid-Open No. 5-114347.
As shown in FIG. 12 and FIG. 12, two through holes 21 are provided in a fixing piece 20 made of an electrically insulating substrate, and an iron core 22
The electromagnet 24 formed by winding the coil 23 around the through hole 2
1, the electromagnet 24 is attached to the fixed piece 20, and the movable piece 25 facing the electromagnet 24 is formed with a pair of movable portions 26 that rotate about the center as fulcrums on both sides of the centerline. An attracting portion 27 made of a magnetic material is formed on the surface of the movable portion 26 facing the electromagnet 24, and the tip of the movable portion 26 is fixed to the fixed piece 20 when attracted to the fixed piece 20 side. The movable contact 28 that comes into contact with and separates from the fixed contact 29 that is provided at.
【0003】[0003]
【発明が解決しようとする課題】上記の従来構成では、
コイル23に電流を流すと鉄心22が励磁されて磁束が
発生し、可動片25と固定片20との間の空隙を介して
可動部26の吸着部27を上記磁束が通ることによって
磁気吸引力が働き、吸着部27が電磁石24に吸着され
るのであるが、電磁石24に生じた磁束は、上記の可動
片25と固定片20との間の空隙以外の空間を通るた
め、磁気効率が良くなく、充分な磁気吸引力を得るため
にコイル23に大きな励磁電流を流さなければならない
という問題があった。また、コイル23と鉄心22とか
ら成る電磁石24が固定片20と別体に構成してあるの
で、組立の際に空隙等の寸法精度が確保できないという
問題や、あるいは、小型化が困難であるという問題があ
った。SUMMARY OF THE INVENTION In the above conventional configuration,
When an electric current is passed through the coil 23, the iron core 22 is excited to generate a magnetic flux, and the magnetic flux passes through the adsorption portion 27 of the movable portion 26 through the gap between the movable piece 25 and the fixed piece 20 to generate a magnetic attraction force. The magnetic attraction generated in the electromagnet 24 is passed through the space other than the gap between the movable piece 25 and the fixed piece 20. Therefore, the magnetic efficiency is improved. However, there is a problem that a large exciting current must be passed through the coil 23 in order to obtain a sufficient magnetic attraction force. Further, since the electromagnet 24 including the coil 23 and the iron core 22 is formed separately from the fixed piece 20, it is difficult to ensure the dimensional accuracy of the gap or the like during assembly, or it is difficult to reduce the size. There was a problem.
【0004】本発明は上記問題点の解決を目的とするも
のであり、全体の小型化を図り、特に薄型に適した電磁
リレーを提供しようとするものである。The present invention is intended to solve the above-mentioned problems, and is intended to provide an electromagnetic relay that is suitable for a thin type, in which the overall size is reduced.
【0005】[0005]
【課題を解決するための手段】請求項1の発明は、上記
目的を達成するために、少なくとも一方の面が磁性体よ
り成る磁性体面であって、この磁性体面に複数の電磁石
が一体に形成された平板状の固定片と、複数の電磁石に
空隙を介して対向するとともに平板状の磁性体より形成
された可動部を有する可動片とを接合して成り、可動部
は、複数の電磁石によって生じる磁界の磁気吸引力で電
磁石側に一端部が移動するように他端部が可動片に支持
固定され、可動部の移動により互いに接離する接点を可
動部の一端部とこの一端部に対応する固定片の端部とに
設けたことを特徴とする。In order to achieve the above object, the invention of claim 1 is a magnetic surface having at least one surface made of a magnetic material, and a plurality of electromagnets are integrally formed on the magnetic surface. And a movable piece having a movable portion formed of a flat magnetic material, which is opposed to the plurality of electromagnets with a gap therebetween, and the movable portion is formed by a plurality of electromagnets. The other end is supported and fixed to the movable piece so that the one end moves to the electromagnet side by the magnetic attraction force of the generated magnetic field, and the contacts that come in contact with and separate from each other by the movement of the movable part correspond to the one end of the movable part and this one end. It is provided at the end of the fixed piece.
【0006】請求項2の発明は、請求項1の発明におい
て、固定片の磁性体面より突出された複数の突起状鉄心
にそれぞれコイルを巻設するとともに各コイルを直列に
接続して複数の電磁石を形成し、隣接する電磁石間にお
いて可動部と固定片の磁性体面と空隙とを介して閉磁路
を形成するように複数の電磁石を配置したことを特徴と
する。According to a second aspect of the invention, in the first aspect of the invention, a plurality of electromagnets are provided by winding coils around a plurality of projecting iron cores protruding from the magnetic surface of the fixed piece and connecting the coils in series. And a plurality of electromagnets are arranged so that a closed magnetic path is formed between the adjacent electromagnets through the movable portion, the magnetic surface of the fixed piece, and the gap.
【0007】請求項3の発明は、請求項2の発明におい
て、1つの電磁石と、この電磁石に隣接する複数の電磁
石との間で可動部と固定片の磁性体面と空隙とを介して
閉磁路を形成するように複数の電磁石を配置したことを
特徴とする。請求項4の発明は、請求項1乃至請求項3
の発明において、固定片の磁性体面に形成された複数の
電磁石間に永久磁石を配設したことを特徴とする。According to a third aspect of the present invention, in the second aspect of the invention, a closed magnetic path is formed between one electromagnet and a plurality of electromagnets adjacent to the electromagnet via a movable portion, a magnetic surface of a fixed piece, and a gap. It is characterized in that a plurality of electromagnets are arranged so as to form The invention of claim 4 relates to claim 1 to claim 3.
In the invention, the permanent magnet is arranged between a plurality of electromagnets formed on the magnetic surface of the fixed piece.
【0008】[0008]
【作用】請求項1の発明の構成では、少なくとも一方の
面が磁性体より成る磁性体面であって、この磁性体面に
複数の電磁石が一体に形成された平板状の固定片と、複
数の電磁石に空隙を介して対向するとともに平板状の磁
性体より形成された可動部を有する可動片とを接合して
成り、可動部が、複数の電磁石によって生じる磁界の磁
気吸引力で電磁石側に一端部が移動するように他端部が
可動片に支持固定され、可動部の移動により互いに接離
する接点を可動部の一端部とこの一端部に対応する固定
片の端部とに設けたので、可動片の可動部と固定片の磁
性体面とは、両者の間の空隙を除いて磁性体により構成
されることとなり、可動片の可動部と固定片の磁性体面
とを電磁石に生じる磁束が貫いて閉磁路を形成して、可
動部に働く磁気吸引力を増大させることができるため、
接点圧を大きくして接点の接触信頼性を向上させるとと
もに、外部からの振動、衝撃に対する誤動作防止を図る
ことができ、複数の電磁石が固定片に一体に形成してあ
るため、全体を小型化することができ、また、所定の磁
気吸引力を得るために電磁石に流す電流を低くすること
ができ、さらに、可動片の可動部と固定片の磁性体面と
の間の空隙を大きくすることができて、接点間耐圧を大
きくできるとともに、電磁石に電流を流して可動部を駆
動する回路の耐圧を低くすることができるものである。According to the first aspect of the invention, at least one surface is a magnetic surface made of a magnetic material, and a plurality of electromagnets are integrally formed on the magnetic surface. And a movable piece having a movable portion formed of a flat plate-shaped magnetic body, which are opposed to each other with a gap therebetween, and the movable portion has one end portion on the electromagnet side due to a magnetic attraction force of a magnetic field generated by a plurality of electromagnets. Since the other end is supported and fixed to the movable piece so that the movable part moves, the contacts that come into contact with and separate from each other by the movement of the movable part are provided at one end of the movable part and the end of the fixed piece corresponding to this one end. The movable part of the movable piece and the magnetic surface of the fixed piece are made of a magnetic material except for the gap between them, and the magnetic flux generated in the electromagnet penetrates the movable part of the movable piece and the magnetic surface of the fixed piece. To form a closed magnetic circuit, and Since it is possible to increase the force,
The contact pressure can be increased to improve contact reliability of the contacts, and malfunctions due to external vibrations and shocks can be prevented, and multiple electromagnets are integrally formed on the fixed piece, reducing the overall size. In addition, the current flowing through the electromagnet to obtain a predetermined magnetic attraction force can be reduced, and the gap between the movable portion of the movable piece and the magnetic surface of the fixed piece can be increased. As a result, the breakdown voltage between the contacts can be increased, and the breakdown voltage of the circuit that drives the movable portion by passing a current through the electromagnet can be lowered.
【0009】請求項2の発明の構成では、固定片の磁性
体面より突出された複数の突起状鉄心にそれぞれコイル
を巻設するとともに各コイルを直列に接続して複数の電
磁石を形成し、隣接する電磁石間において可動部と固定
片の磁性体面と空隙とを介して閉磁路を形成するように
複数の電磁石を配置したので、固定片の磁性体面に一体
に複数の電磁石を容易に形成することができ、しかも、
隣接する電磁石間においては閉磁路が形成されるため、
可動部に働く磁気吸引力をさらに増大させることができ
るものである。According to the second aspect of the present invention, the coils are wound around the plurality of projecting iron cores protruding from the magnetic surface of the fixed piece, and the coils are connected in series to form a plurality of electromagnets. Since a plurality of electromagnets are arranged between the electromagnets so as to form a closed magnetic path through the movable portion, the magnetic surface of the fixed piece, and the air gap, it is easy to integrally form a plurality of electromagnets on the magnetic surface of the fixed piece. And moreover,
Since a closed magnetic circuit is formed between adjacent electromagnets,
The magnetic attraction force acting on the movable portion can be further increased.
【0010】請求項3の発明の構成では、1つの電磁石
と、この電磁石に隣接する複数の電磁石との間で可動部
と固定片の磁性体面と空隙とを介して閉磁路を形成する
ように複数の電磁石を配置したので、電磁石によって生
じる磁束の通る経路を複数形成することができ、可動部
に働く磁気吸引力をさらに増大させることができるもの
である。According to the third aspect of the invention, a closed magnetic path is formed between one electromagnet and a plurality of electromagnets adjacent to the electromagnet via the movable portion, the magnetic surface of the fixed piece, and the air gap. Since the plurality of electromagnets are arranged, it is possible to form a plurality of paths through which the magnetic flux generated by the electromagnets passes, and it is possible to further increase the magnetic attraction force acting on the movable portion.
【0011】請求項4の発明の構成では、固定片の磁性
体面に形成された複数の電磁石間に永久磁石を配設した
ので、永久磁石により生じる磁束が電磁石により生じる
磁束の経路に重畳され、可動部に働く磁気吸引力をさら
に増大させることができるものである。According to the fourth aspect of the invention, since the permanent magnet is arranged between the plurality of electromagnets formed on the magnetic surface of the fixed piece, the magnetic flux generated by the permanent magnet is superposed on the path of the magnetic flux generated by the electromagnet. The magnetic attraction force acting on the movable portion can be further increased.
【0012】[0012]
【実施例】以下、本発明を実施例により説明する。 (実施例1)本実施例は、図1に示すように固定片1と
可動片10とで構成され、固定片1に可動片10を接合
した構造となっている。EXAMPLES The present invention will be described below with reference to examples. (Embodiment 1) This embodiment is composed of a fixed piece 1 and a movable piece 10 as shown in FIG. 1, and has a structure in which the movable piece 10 is joined to the fixed piece 1.
【0013】可動片10は、図2に示すように、例えば
鉄−ニッケル合金から成る磁性体を基材とする平板状の
もので、可動接点11、絶縁膜12、接合用金属薄膜層
13等を形成している。可動片10には、その周辺部よ
り異方性エッチングやプレス等により、凹部に加工され
るとともに、外周がコの字状に加工されて可動片10と
切り離されその一端が可動片10と一体につながった支
持端部15となった可動部14が一体に形成されてお
り、この可動部14は上記支持端部15を中心に揺動回
転する。As shown in FIG. 2, the movable piece 10 is of a flat plate type having a magnetic material made of, for example, an iron-nickel alloy as a base material, and has a movable contact 11, an insulating film 12, a bonding metal thin film layer 13 and the like. Is formed. The movable piece 10 is processed into a concave portion from its periphery by anisotropic etching, pressing, or the like, and the outer periphery is processed into a U-shape to be separated from the movable piece 10 and one end thereof is integrated with the movable piece 10. The movable part 14 which is connected to the support end 15 is integrally formed, and the movable part 14 swings and rotates around the support end 15.
【0014】よって可動部14は、後述する固定片1の
鉄心2に対して移動する。また、固定片1の固定接点3
から電気信号を取り出せるように可動片10の隅には切
欠16も設けてある。可動接点11は、可動部14の自
由端側の端部において、可動片10の表面に酸化シリコ
ンから成る上記絶縁膜12上に金のような導電率の高い
金属により形成してあり、可動部14の凹部により、固
定片1が接合されるだけで固定接点3と可動接点11と
の接点間ギャップを設けることができるようになってい
る。Therefore, the movable portion 14 moves with respect to the iron core 2 of the fixed piece 1 described later. In addition, the fixed contact 3 of the fixed piece 1
A notch 16 is also provided at a corner of the movable piece 10 so that an electric signal can be taken out from the movable piece 10. The movable contact 11 is formed on the surface of the movable piece 10 at the free end side of the movable portion 14 on the insulating film 12 made of silicon oxide by a metal having a high conductivity such as gold. Due to the concave portion of 14, the contact gap between the fixed contact 3 and the movable contact 11 can be provided only by joining the fixed piece 1.
【0015】一方、図3に示すように、固定片1は可動
片10と同様に鉄−ニッケル合金等から成る磁性体を基
材とする平板状のもので、固定接点3、絶縁膜4、接合
用金属薄膜層5等を形成している。また、固定片1に
は、プレス等によってその一方の面を突出させて多数の
突起状の鉄心2が一体に形成してあり、これら多数の鉄
心2は、固定片1の長手方向に沿って所定の間隔を有
し、複数の列状に配置してある(ただし、図3において
は一部を省略して図示している。)。On the other hand, as shown in FIG. 3, the fixed piece 1, like the movable piece 10, is a flat plate-like one having a magnetic material made of an iron-nickel alloy or the like as a base material, and has a fixed contact 3, an insulating film 4, The metal thin film layer 5 for joining and the like are formed. Further, the fixed piece 1 is integrally formed with a large number of projecting iron cores 2 by projecting one surface thereof by pressing or the like, and these large number of iron cores 2 are arranged along the longitudinal direction of the fixed piece 1. They are arranged in a plurality of rows with a predetermined interval (however, in FIG. 3, a part is omitted for illustration).
【0016】上記固定片1の可動片10と対向する面に
形成された複数の鉄心2には各々コイル6が巻設してあ
り、鉄心2とコイル6により電磁石が構成してある。こ
のコイル6は、薄膜または、絶縁皮膜を有する銅等の線
材から成り、各鉄心2の周辺に形成されて巻設されると
ともに、互いに直列に接続してある。なお、コイル6の
巻回方向は、図4に示すように、隣接する鉄心2におい
て互いに逆向きとしてある。A coil 6 is wound around each of a plurality of iron cores 2 formed on the surface of the fixed piece 1 facing the movable piece 10, and the iron cores 2 and the coils 6 constitute an electromagnet. The coil 6 is made of a wire material such as copper having a thin film or an insulating film, is formed around each iron core 2, is wound, and is connected to each other in series. As shown in FIG. 4, the winding directions of the coils 6 are opposite to each other in the adjacent iron cores 2.
【0017】また、固定片1の固定接点3から電気信号
を取り出せるように、固定片1の隅に出力端子7が設け
てあり、さらに、固定片1に形成したコイル6に励磁電
流を流すための入力端子8を固定片1の隅に設けてあ
り、この入力端子8を露出させるために、入力端子8と
対応する位置の可動片10の端部に切欠17を設けてあ
る。An output terminal 7 is provided at a corner of the fixed piece 1 so that an electric signal can be taken out from the fixed contact 3 of the fixed piece 1. Further, an exciting current is passed through a coil 6 formed on the fixed piece 1. The input terminal 8 is provided at the corner of the fixed piece 1, and in order to expose the input terminal 8, a notch 17 is provided at the end of the movable piece 10 at a position corresponding to the input terminal 8.
【0018】固定接点3は、可動接点11と対応する端
部の位置であって、固定片1の表面に形成された酸化シ
リコンから成る絶縁膜4上に金のような導電率の高い金
属により形成してある。また、固定片1及び可動片10
にそれぞれ形成された接合用金属薄膜層5は、金あるい
は金合金層から成り、両者を接合することによって、可
動片10が固定片1に接合される。The fixed contact 3 is located at an end position corresponding to the movable contact 11, and is made of a highly conductive metal such as gold on the insulating film 4 made of silicon oxide formed on the surface of the fixed piece 1. Has been formed. In addition, the fixed piece 1 and the movable piece 10
The metal thin film layers 5 for bonding formed on the respective are made of gold or a gold alloy layer, and the movable piece 10 is bonded to the fixed piece 1 by bonding both.
【0019】さて、本実施例の電磁リレーにおいては、
入力端子8よりコイル6に励磁電流を流すと、各コイル
6には図4に示すような向きの励磁電流が流れて鉄心2
が励磁される。ここで、隣接する鉄心2に巻設されたコ
イル6の巻回方向は互いに逆向きであるから、隣接する
鉄心2に発生する磁束の向きも互いに逆向きとなる。し
たがって、図5に示すように、励磁された鉄心2に発生
する磁束が固定片1と可動片10との間の空隙を介して
磁性体から成る可動体10及び固定片1の内部を通過
し、隣接する複数の鉄心2に磁束が流れ込み、固定片1
と可動片10の可動部14との間に多数の閉磁路が形成
される。その結果、固定片1の表面に形成された鉄心2
とコイル6から成る電磁石の磁気吸引力によって、磁性
体にて形成された可動片10の可動部14が固定片1の
方へ引き寄せられ、可動部14の自由端側の端部に形成
された可動接点11と固定片1の表面に形成された固定
接点3とが接触し、コイル6に励磁電流が印加されてい
る限りこの接触状態が保持される。Now, in the electromagnetic relay of this embodiment,
When an exciting current is passed from the input terminal 8 to the coils 6, the exciting currents in the directions shown in FIG.
Is excited. Here, since the winding directions of the coils 6 wound around the adjacent iron cores 2 are opposite to each other, the directions of the magnetic fluxes generated at the adjacent iron cores 2 are also opposite to each other. Therefore, as shown in FIG. 5, the magnetic flux generated in the excited iron core 2 passes through the gap between the fixed piece 1 and the movable piece 10 and passes through the inside of the movable body 10 made of a magnetic material and the fixed piece 1. , The magnetic flux flows into the plurality of adjacent iron cores 2, and the fixed piece 1
A large number of closed magnetic paths are formed between the movable portion 14 and the movable portion 14 of the movable piece 10. As a result, the iron core 2 formed on the surface of the fixed piece 1
The movable portion 14 of the movable piece 10 made of a magnetic material is attracted toward the fixed piece 1 by the magnetic attraction force of the electromagnet composed of the coil 6 and the coil 6, and is formed at the end of the movable portion 14 on the free end side. This contact state is maintained as long as the movable contact 11 and the fixed contact 3 formed on the surface of the fixed piece 1 are in contact with each other and an exciting current is applied to the coil 6.
【0020】一方、コイル6に励磁電流が印加されなく
なると、固定片1の表面に形成された電磁石による磁気
吸引力が消滅し、可動部14がそのバネ力によって元の
状態に復帰し、固定接点3と可動接点14が開離する。
上記構成によれば、固定片1の表面に形成された複数の
電磁石に発生する磁束が通る経路は、固定片1と可動片
10の可動部14との間の空隙を除いて磁性体から成る
固定片1と可動片10にて占められるため、従来構成に
比較して磁気抵抗を減少させることができ、可動部14
に働く磁気吸引力を増大させることができる。その結
果、固定接点3と可動接点11との接触時の接点圧を大
きくすることができ、接点の接触信頼性を向上させ、外
部からの振動、衝撃に対して誤動作が起こりにくくする
ことができる。On the other hand, when the exciting current is no longer applied to the coil 6, the magnetic attraction force due to the electromagnet formed on the surface of the fixed piece 1 disappears, and the movable portion 14 is restored to its original state by the spring force and fixed. The contact 3 and the movable contact 14 are separated.
According to the above configuration, the path through which the magnetic flux generated in the plurality of electromagnets formed on the surface of the fixed piece 1 passes is formed of a magnetic material except for the gap between the fixed piece 1 and the movable portion 14 of the movable piece 10. Since the fixed piece 1 and the movable piece 10 occupy the magnetic resistance, it is possible to reduce the magnetic resistance as compared with the conventional configuration.
It is possible to increase the magnetic attraction force acting on. As a result, the contact pressure at the time of contact between the fixed contact 3 and the movable contact 11 can be increased, the contact reliability of the contact can be improved, and malfunction due to external vibration or shock can be made less likely to occur. .
【0021】また、従来例に比較して、同じ磁気吸引力
を得るためにコイル6に印加すべき励磁電流の大きさを
小さくすることができる。さらに、可動接点14と固定
接点3との間の空隙を従来よりも大きくすることができ
るので、接点間耐圧を大きくすることができ、また、コ
イル6に励磁電流を印加する駆動回路(図示せず)への
耐圧を低くすることも可能になる。Further, as compared with the conventional example, the magnitude of the exciting current to be applied to the coil 6 in order to obtain the same magnetic attraction force can be reduced. Further, since the gap between the movable contact 14 and the fixed contact 3 can be made larger than before, the breakdown voltage between the contacts can be increased, and a drive circuit for applying an exciting current to the coil 6 (not shown). It is also possible to lower the withstand voltage.
【0022】さらに、電磁石を構成する鉄心2を固定片
1の表面を加工することで一体に形成してあるので、固
定片1に容易に電磁石を形成することができるだけでな
く、全体を小型化することもでき、特に固定片1及び可
動片10を薄膜で構成しても充分な磁気吸引力が得られ
ることから、薄型に適した電磁リレーを実現することが
できる。また、本実施例においては、隣接する鉄心2に
巻設されるコイル6の巻回方向を互いに逆向きとしたこ
とにより、1つの電磁石とそれに隣接する複数の電磁石
との磁界の向きが逆向きとなるので、1つの電磁石に発
生した磁束の通る経路が増加し、電磁石の磁気吸引力を
さらに増大させることができるのである。Further, since the iron core 2 constituting the electromagnet is integrally formed by processing the surface of the fixed piece 1, not only the electromagnet can be easily formed on the fixed piece 1, but also the entire size is reduced. Since a sufficient magnetic attraction force can be obtained even when the fixed piece 1 and the movable piece 10 are made of a thin film, an electromagnetic relay suitable for a thin type can be realized. Further, in this embodiment, the winding directions of the coils 6 wound around the adjacent iron cores 2 are opposite to each other, so that the directions of the magnetic fields of one electromagnet and a plurality of electromagnets adjacent thereto are opposite. Therefore, the path through which the magnetic flux generated in one electromagnet passes increases, and the magnetic attraction force of the electromagnet can be further increased.
【0023】(実施例2)本実施例の電磁リレーの基本
構成は、図6乃至図8に示すように、実施例1のものと
共通であるので、共通する部分には同一の符号を付して
説明は省略し、特徴となる部分についてのみ説明する。
本実施例の電磁リレーは、図6、図8及び図9に示すよ
うに、電磁石が形成された固定片1の一方の面に、複数
個の円筒状の永久磁石9が固定片1に接合され、各鉄心
2に挟まれるように隣接して列状に配設してある。ただ
し、コイル6に励磁電流が印加されていない状態では、
可動部14が永久磁石9の磁気吸引力によって移動して
固定接点3と可動接点11とが接触しないように、可動
部14のバネ力の強さ、及び永久磁石9の個数、その磁
極の強さを設定してある。(Embodiment 2) As shown in FIGS. 6 to 8, the basic structure of the electromagnetic relay of this embodiment is the same as that of the first embodiment, and therefore the same parts are designated by the same reference numerals. The description will be omitted, and only the characteristic parts will be described.
In the electromagnetic relay of this embodiment, as shown in FIGS. 6, 8 and 9, a plurality of cylindrical permanent magnets 9 are bonded to the fixed piece 1 on one surface of the fixed piece 1 on which an electromagnet is formed. The cores 2 are arranged adjacent to each other so as to be sandwiched between the cores 2. However, in the state where the exciting current is not applied to the coil 6,
The strength of the spring force of the movable portion 14, the number of the permanent magnets 9 and the strength of their magnetic poles are adjusted so that the movable portion 14 does not move due to the magnetic attraction force of the permanent magnet 9 and the fixed contact 3 and the movable contact 11 come into contact with each other. Has been set.
【0024】上記構成によれば、図10に示すように、
コイル6を流れる励磁電流により励磁された鉄心2から
発生する磁束と、その鉄心2と隣接して配設された永久
磁石9にから発生する磁束とは同じ経路を通って重畳さ
れるため、複数の電磁石間だけでなく、電磁石と永久磁
石9との間にも閉磁路が形成されることになる。その結
果、可動片10の可動部14に働く磁気吸引力をさらに
増大させることができるのである。なお、他の構成及び
動作については、実施例1の電磁リレーと共通であるの
で説明は省略する。According to the above construction, as shown in FIG.
Since the magnetic flux generated from the iron core 2 excited by the exciting current flowing through the coil 6 and the magnetic flux generated from the permanent magnet 9 arranged adjacent to the iron core 2 are superposed through the same route, A closed magnetic circuit is formed not only between the electromagnets but also between the electromagnets and the permanent magnet 9. As a result, the magnetic attraction force acting on the movable portion 14 of the movable piece 10 can be further increased. Note that the other configurations and operations are the same as those of the electromagnetic relay of the first embodiment, so description thereof will be omitted.
【0025】[0025]
【発明の効果】請求項1の発明は、少なくとも一方の面
が磁性体より成る磁性体面であって、この磁性体面に複
数の電磁石が一体に形成された平板状の固定片と、複数
の電磁石に空隙を介して対向するとともに平板状の磁性
体より形成された可動部を有する可動片とを接合して成
り、可動部が、複数の電磁石によって生じる磁界の磁気
吸引力で電磁石側に一端部が移動するように他端部が可
動片に支持固定され、可動部の移動により互いに接離す
る接点を可動部の一端部とこの一端部に対応する固定片
の端部とに設けたので、可動片の可動部と固定片の磁性
体面とは、両者の間の空隙を除いて磁性体により構成さ
れることとなり、可動片の可動部と固定片の磁性体面と
を電磁石に生じる磁束が貫いて閉磁路を形成して、可動
部に働く磁気吸引力を増大させることができるため、接
点圧を大きくして接点の接触信頼性を向上させるととも
に、外部からの振動、衝撃に対する誤動作防止を図るこ
とができ、複数の電磁石が固定片に一体に形成してある
ため、全体を小型化することができるという効果があ
る。また、所定の磁気吸引力を得るために電磁石に流す
電流を低くすることができるという効果がある。さら
に、可動片の可動部と固定片の磁性体面との間の空隙を
大きくすることができて、接点間耐圧を大きくできると
ともに、電磁石に電流を流して可動部を駆動する回路の
耐圧を低くすることができるという効果がある。According to the invention of claim 1, at least one surface is a magnetic surface made of a magnetic material, and a plurality of electromagnets are integrally formed on the magnetic surface. And a movable piece having a movable portion formed of a flat plate-shaped magnetic body, which are opposed to each other with a gap therebetween, and the movable portion has one end portion on the electromagnet side due to a magnetic attraction force of a magnetic field generated by a plurality of electromagnets. Since the other end is supported and fixed to the movable piece so that the movable part moves, the contacts that come into contact with and separate from each other by the movement of the movable part are provided at one end of the movable part and the end of the fixed piece corresponding to this one end. The movable part of the movable piece and the magnetic surface of the fixed piece are made of a magnetic material except for the gap between them, and the magnetic flux generated in the electromagnet penetrates the movable part of the movable piece and the magnetic surface of the fixed piece. To form a closed magnetic circuit, and magnetic attraction that acts on the moving part Therefore, the contact pressure can be increased to improve the contact reliability of the contacts and prevent malfunctions due to external vibrations and shocks. Therefore, there is an effect that the entire size can be reduced. Further, there is an effect that a current flowing through the electromagnet can be reduced to obtain a predetermined magnetic attraction force. Furthermore, the gap between the movable part of the movable piece and the magnetic surface of the fixed piece can be increased to increase the breakdown voltage between the contacts and lower the breakdown voltage of the circuit that drives the movable part by passing a current through the electromagnet. There is an effect that can be done.
【0026】請求項2の発明は、固定片の磁性体面より
突出された複数の突起状鉄心にそれぞれコイルを巻設す
るとともに各コイルを直列に接続して複数の電磁石を形
成し、隣接する電磁石間において可動部と固定片の磁性
体面と空隙とを介して閉磁路を形成するように複数の電
磁石を配置したので、固定片の磁性体面に一体に複数の
電磁石を容易に形成することができ、しかも、隣接する
電磁石間においては閉磁路が形成されるため、可動部に
働く磁気吸引力をさらに増大させることができるという
効果がある。According to a second aspect of the present invention, coils are respectively wound around a plurality of projecting iron cores protruding from the magnetic surface of the fixed piece, and the coils are connected in series to form a plurality of electromagnets. Since a plurality of electromagnets are arranged so as to form a closed magnetic circuit through the movable part, the magnetic surface of the fixed piece and the air gap, it is possible to easily form a plurality of electromagnets integrally with the magnetic surface of the fixed piece. Moreover, since a closed magnetic path is formed between the adjacent electromagnets, there is an effect that the magnetic attraction force acting on the movable portion can be further increased.
【0027】請求項3の発明は、1つの電磁石と、この
電磁石に隣接する複数の電磁石との間で可動部と固定片
の磁性体面と空隙とを介して閉磁路を形成するように複
数の電磁石を配置したので、電磁石によって生じる磁束
の通る経路を複数形成することができ、可動部に働く磁
気吸引力をさらに増大させることができるという効果が
ある。According to the third aspect of the present invention, a plurality of electromagnets and a plurality of electromagnets adjacent to the electromagnets form a plurality of closed magnetic paths via the movable portion, the magnetic surface of the fixed piece, and the air gap. Since the electromagnets are arranged, it is possible to form a plurality of paths through which the magnetic flux generated by the electromagnets passes, and it is possible to further increase the magnetic attraction force acting on the movable portion.
【0028】請求項4の発明は、固定片の磁性体面に形
成された複数の電磁石間に永久磁石を配設したので、永
久磁石により生じる磁束が電磁石により生じる磁束の経
路に重畳され、可動部に働く磁気吸引力をさらに増大さ
せることができ、しかも、所定の磁気吸引力を得るため
に電磁石に流す電流をさらに低くすることができるとい
う効果がある。According to the invention of claim 4, since the permanent magnet is arranged between the plurality of electromagnets formed on the magnetic surface of the fixed piece, the magnetic flux generated by the permanent magnet is superposed on the path of the magnetic flux generated by the electromagnet, and the movable portion is moved. It is possible to further increase the magnetic attraction force exerted on the magnet and to further reduce the current flowing through the electromagnet to obtain a predetermined magnetic attraction force.
【図1】実施例1を示す断面図である。FIG. 1 is a cross-sectional view showing a first embodiment.
【図2】同上の可動片の平面図である。FIG. 2 is a plan view of the movable piece of the above.
【図3】同上の固定片の平面図である。FIG. 3 is a plan view of the same fixing piece.
【図4】同上の要部の平面図である。FIG. 4 is a plan view of the main part of the above.
【図5】同上の動作を説明する図である。FIG. 5 is a diagram for explaining the operation of the above.
【図6】実施例2を示す断面図である。FIG. 6 is a cross-sectional view showing a second embodiment.
【図7】同上の可動片の平面図である。FIG. 7 is a plan view of the movable piece of the above.
【図8】同上の固定片の平面図である。FIG. 8 is a plan view of the fixing piece of the above.
【図9】同上の要部の平面図である。FIG. 9 is a plan view of the main part of the above.
【図10】同上の動作を説明する図である。FIG. 10 is a diagram illustrating an operation of the above.
【図11】従来例を示す分解斜視図である。FIG. 11 is an exploded perspective view showing a conventional example.
【図12】同上の断面図である。FIG. 12 is a sectional view of the above.
1 固定片 2 鉄心 3 固定接点 6 コイル 10 可動片 11 可動接点 14 可動部 1 Fixed Piece 2 Iron Core 3 Fixed Contact 6 Coil 10 Moving Piece 11 Moving Contact 14 Moving Part
Claims (4)
性体面であって、この磁性体面に複数の電磁石が一体に
形成された平板状の固定片と、複数の電磁石に空隙を介
して対向するとともに平板状の磁性体より形成された可
動部を有する可動片とを接合して成り、可動部は、複数
の電磁石によって生じる磁界の磁気吸引力で電磁石側に
一端部が移動するように他端部が可動片に支持固定さ
れ、可動部の移動により互いに接離する接点を可動部の
一端部とこの一端部に対応する固定片の端部とに設けた
ことを特徴とする電磁リレー。1. A flat plate-shaped fixing piece in which at least one surface is made of a magnetic material, and a plurality of electromagnets are integrally formed on the magnetic surface, and the plurality of electromagnets face each other with a gap therebetween. And a movable piece having a movable part formed of a flat plate-shaped magnetic body are joined together, and the movable part has the other end so that one end moves to the electromagnet side by a magnetic attraction force of a magnetic field generated by a plurality of electromagnets. An electromagnetic relay in which a portion is supported and fixed to a movable piece, and contacts which are brought into contact with and separated from each other by movement of the movable portion are provided at one end of the movable portion and an end of the fixed piece corresponding to the one end.
突起状鉄心にそれぞれコイルを巻設するとともに各コイ
ルを直列に接続して複数の電磁石を形成し、隣接する電
磁石間において可動部と固定片の磁性体面と空隙とを介
して閉磁路を形成するように複数の電磁石を配置したこ
とを特徴とする請求項1記載の電磁リレー。2. A coil is wound around each of a plurality of projecting iron cores protruding from a magnetic surface of a fixed piece, and each coil is connected in series to form a plurality of electromagnets. The electromagnetic relay according to claim 1, wherein a plurality of electromagnets are arranged so as to form a closed magnetic circuit through the magnetic surface of the fixed piece and the air gap.
複数の電磁石との間で可動部と固定片の磁性体面と空隙
とを介して閉磁路を形成するように複数の電磁石を配置
したことを特徴とする請求項2記載の電磁リレー。3. A plurality of electromagnets are arranged so as to form a closed magnetic path between one electromagnet and a plurality of electromagnets adjacent to the electromagnet via a movable part, a magnetic surface of a fixed piece and a gap. The electromagnetic relay according to claim 2, wherein:
磁石間に永久磁石を配設したことを特徴とする請求項1
乃至請求項3記載の電磁リレー。4. A permanent magnet is arranged between a plurality of electromagnets formed on the magnetic surface of the fixed piece.
To the electromagnetic relay according to claim 3.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7771294A JPH07288076A (en) | 1994-04-15 | 1994-04-15 | Electromagnetic relay |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7771294A JPH07288076A (en) | 1994-04-15 | 1994-04-15 | Electromagnetic relay |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH07288076A true JPH07288076A (en) | 1995-10-31 |
Family
ID=13641511
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7771294A Withdrawn JPH07288076A (en) | 1994-04-15 | 1994-04-15 | Electromagnetic relay |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07288076A (en) |
-
1994
- 1994-04-15 JP JP7771294A patent/JPH07288076A/en not_active Withdrawn
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