JP2004227966A

JP2004227966A - Operation device and switching device using operation device

Info

Publication number: JP2004227966A
Application number: JP2003015498A
Authority: JP
Inventors: Mitsuru Tsukima; 満月間; Kenichi Koyama; 健一小山; Takafumi Nakagawa; 隆文中川; Toshie Takeuchi; 敏恵竹内; Tetsuya Matsuda; 哲也松田
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2003-01-24
Filing date: 2003-01-24
Publication date: 2004-08-12

Abstract

PROBLEM TO BE SOLVED: To provide an operation device for switching in a switching device of a power distribution system, suppressing eddy current generation and reducing the leakage of magnetic field. SOLUTION: A needle, coil and a permanent magnet provided in a yoke of a laminated structure are sealed magnetically using a yoke passing magnetic flux made by the coil. The leakage of the magnetic field and eddy current generation are thus reduced. COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
この発明は、操作装置に関するものであり、特に電力送配電系統に用いられている開閉器を駆動する操作装置およびその操作装置を使用した開閉装置に係るものである。
【０００２】
【従来の技術】
スイッチギヤや真空遮断器の新しい駆動方式として、近年、高信頼性や省エネルギを目的として、電磁アクチュエータが従来までのバネ機構に置き換わろうとしている。省エネルギ化には、アクチュエータ自体の動作効率向上が必須であり、またアクチュエータ自体の信頼性のみならず、周辺の電子機器への電磁ノイズの影響も配慮した遮断器や、スイッチギヤ全体としての信頼性向上が必要である。このような観点から従来、ヨーク内にて移動可能な可動鉄心と、永久磁石、および駆動コイルを備えた電磁アクチュエータが示されている（例えば、特許文献１参照）。
【０００３】
【特許文献１】
中田高義他「有限要素法による交直電磁石の設計と応用」第１版、森北出版株式会社、１９９１年８月７日、１０１頁、図１０、１３
【０００４】
上記特許文献１では、アクチュエータを軸対称構造（円柱形状）とし、コイルを鉄心で完全に囲い、コイル磁場がアクチュエータ外部空間にほとんど漏れることなく鉄心中に導入した構造を採用しているが、ヨークや可動鉄心が積層構造を採用していないため、ヨークや可動鉄心の表面を流れる渦電流の影響があるため磁束は磁性体中をとおり、可動鉄心の駆動効率を上げることはできないという問題点があった。
また、この特許文献１に示された構造の円柱形状を積層構造とするのは、製作にかなり困難を伴い、コスト高となるとともに量産に適さないという問題点もあった。
一方、積層ヨーク内にて可動鉄心、コイル、永久磁石を備えた構成のアクチュエータが示されている（例えば特許文献２参照）。
【０００５】
【特許文献２】
国際公開ＷＯ第９５／０７５４２号パンフレットアブストラクト
【０００６】
しかしながら上記特許文献２では、積層ヨークを用いているため、渦電流を抑制できるメリットを有するが、略四角形状のコイルの２辺のみを磁気回路に使用するため、他の２辺から発生する磁場が漏れ、その分可動鉄心の駆動効率が低くなるという問題点がある。
【０００７】
【発明が解決しようとする課題】
このように特許文献１に示されているものでは、コイルが完全にヨークに囲われる形状であるためコイルの漏れ磁場は抑制されるが、ヨークや可動鉄心の表面を流れる渦電流の影響のため、駆動効率を上げることができないという問題点があった。
一方特許文献２では、略四角形状のコイルの２辺のみを磁気回路に使用するため、他の２辺から発生する磁場が漏れるため、その分駆動効率が低くなるという問題点があった。また、電子機器や電子回路が近接配置されていると、これら機器のノイズ混入や誤動作が発生するという問題点もあった。
この発明は、上記のような課題を解決するためになされたもので、ヨーク内にコイル、永久磁石、可動子を設けるとともに、コイルの作る磁束が通るヨーク内に磁気的に密閉する構造を採用し、電子機器類への漏れ磁場の影響を少なくし、かつヨーク、可動鉄心を積層構造とすることにより、渦電流の影響をなくし、駆動特性を向上させた操作装置を提供する。
【０００８】
【課題を解決するための手段】
ヨークと、前記ヨーク内に設けられた可動子とコイルと永久磁石とを備えた操作装置であって、前記ヨークには前記可動子が接する第１、第２の部位を有しており、前記可動子は前記ヨークの第１、第２の部位間を前記コイルの励磁により往復動するものであり、前記永久磁石は前記可動子に対向して前記ヨークに設けられ、前記可動子を前記ヨークの第１または第２の部位で保持するものであり、前記コイルの作る磁束が通る前記ヨーク内に、前記可動子、コイルおよび永久磁石が磁気的に密閉され、前記ヨークを積層構造としたものである。
【０００９】
【発明の実施の形態】
実施の形態１．
以下、この発明の実施の形態１を図に基づいて説明する。
図１はこの実施の形態１の操作装置１００の斜視図、図２は前記操作装置１００を構成する各構成要素の組み立て状態を透視した図、図３は図１のＳ−Ｓ断面を示す図である。図１、図２において、第１のヨーク１、第２のヨーク２とを組み立てることで形成される箱体５０と、箱体５０の内部に設けられた第１のコイル３、第２のコイル４と、可動子５および図２に示すように第１のヨーク１および第２のヨーク２に、可動子５にそれぞれ対向して設けられた永久磁石６Ａ、６Ｂ、さらには可動子５に設けられた可動軸７と、可動軸７の軸受８によって前記操作装置１００が構成されている。なお、軸受８は箱体５０に取り付けられている。ここで、第１、第２のヨーク１、２および可動子５は薄鋼板あるいは電磁鋼板の積層構造である。箱体５０を、矢印Ａの方向より見た第１のヨーク１の正面形状はＥ型であり、第２のヨーク２は日型である。
第１、第２のコイル３、４は前記箱体５０内に収納されており、第２のヨークの両端よりコイル端がはみ出してはない。端板９は第２のヨーク２に取り付けられ、箱体５０の磁気シールドをなしている。
【００１０】
ここで前記永久磁石６Ａ、６Ｂの幅は、対向する可動子５の幅より小さい。そして図１に示したように、箱体５０によって第１、第２のコイル３、４、永久磁石６Ａ、６Ｂ、可動子５は囲まれた構造であるので、第１、第２のコイル３、４および永久磁石６Ａ、６Ｂの発生する磁場はほとんど漏れず、箱体５０内つまり操作装置１００内で収束する。従って永久磁石６Ａ、６Ｂによる保持力および第１、第２のコイル３、４の励磁による動作力は漏れ磁場がないことから最大限利用されることになり、小型でかつ、高効率な操作装置を実現することができる。なおこの実施の形態１では、端板９を設ける例を示しているが、第１、第２のコイル３、４の端部が、第２のヨーク端からはみ出していないので、第１、第２のコイル３、４の磁場は実質上遮蔽されていることになり、磁気シールドのみの目的に設ける必要はない。しかし、操作装置１００内部の防塵や防湿を目的とした保護カバーとして端板９を設けることにより、環境、雰囲気による腐食防止対策を容易に行うことができる。
【００１１】
また、永久磁石６Ａ、６Ｂを可動子５に対向して、第１、第２のヨーク１、２に４個設ける例を示しているが図４に示すように矩形リング形状とした１個の永久磁石６Ｃとしてもよく、このような構成により部品点数の縮減および組み立て工程の簡略化がはかれる。
またさらに、４個の永久磁石６Ａ、６Ｂのうち、いずれか１対、例えば永久磁石６Ｂのみをヨークに設けてもよい。つまり、操作装置１００の動作特性に応じて永久磁石の形状、数を選択してよい。
【００１２】
このように、この実施の形態１では操作装置１００の発生する磁場はほとんど遮蔽されているため、近年の開閉装置のコンパクト化に伴う電子機器類の密着配置による周辺電子機器へのノイズ混入や誤動作を小さく抑制できるとともに、渦電流の発生を抑制でき、動作特性の向上した操作装置となる。
【００１３】
次に実施の形態１および後述する実施の形態を含むこの発明による操作装置１００およびこの操作装置１００の可動軸７に直結された電路の開閉を行う開閉器の接点開閉の動作原理を図５（ａ）〜図５（ｃ）、図６に基づいて説明する。
なお、図６は開閉装置５００を示す概略図である。
（１）図５（ａ）は開閉器２００の接点２１０が閉状態であり、可動子５は箱体５０の第１の部位１０に保持されており、第１、第２のコイル３、４は励磁されていない。この状態において、永久磁石６Ａと６Ｂによって磁気回路Ｌ_１とＬ_２を形成し、それぞれの磁束Φ_ＰＭ１とΦ_ＰＭ２を発生する。磁気回路Ｌ_２には磁気的空隙Ｇ１を有しているためにΦ_ＰＭ１の経路の方がΦ_ＰＭ２の磁気抵抗より低くΦ_ＰＭ１》Φ_ＰＭ２となり、可動子５と箱体５０の間で吸引力が発生し、可動子５は第１の部位１０で保持されていることになる。
（２）第２のコイル４を永久磁石６Ａ、６Ｂと同極性となるように励磁すると、図５（ｂ）に示すように磁束Φｃｏｉｌ_２−１とΦｃｏｉｌ_２−２が発生する。永久磁石６Ａ、６Ｂが発生している磁束Φ_ＰＭ１、Φ_ＰＭ２と合成して、Φ_ＰＭ２＋Φｃｏｉｌ_２−１＞Φ_ＰＭ１−Φｃｏｉｌ_２−２になると、可動子５をヨーク１の第２の部位１１方向に引っ張る力が発生する。
（３）可動子５が箱体５０の第１の部位１０から離れると、Φ_ＰＭ２＋Φｃｏｉｌ_２−１》Φ_ＰＭ１−Φｃｏｉｌ_２−２となるので、図５（ｃ）に示すように可動子５は移動して箱体５０の第２の部位１１に到達する。
（４）ここで第２のコイル４の励磁を止めると、同じく図５（ｃ）に示すように可動子５は箱体５０の第２の部位１１に保持される。
（５）次に図５（ｃ）の状態から図５（ａ）の状態に可動子５を駆動しようとするときは、第１のコイル３を励磁することによって、前記と同じ動作原理により、可動子５は移動し、第１の部位１０に到達する。
以上のように可動子５が箱体５０内で移動することにより、可動子５の可動軸７に連結され開閉器２００の接点２１０を開とすることにより、電力送配電系統の電流遮断が行われる。
【００１４】
実施の形態２．
次に実施の形態２を図７、図８に基づいて説明する。
図７は操作装置１００の斜視図、図８は断面図である。なおコイルは図示省略している。箱体５０Ａはヨーク１Ａと可動軸７の軸受８Ａおよび端板９によって形成されている。前記ヨーク１Ａの正面形状は実施の形態１と同様のＥ型である。そして、永久磁石６Ｃはヨーク１Ａの可動子５に対向する面にのみ設けている。他の構成要素は前記実施の形態１と同様である。この構造の特徴は、軸受８Ａの長さがヨーク１Ａの積層厚さと同じであり、箱体５０Ａを構成するヨークの部品数を少なくし、製作コストの低減を図ることができるという効果がある。
【００１５】
実施の形態３．
次に実施の形態３を図９、図１０に基づいて説明する。
図９は操作装置１００の組み立て透視図、図１０は操作装置１００の斜視図である。箱体５０を形成するヨークは、互いに対向する第１のヨーク１Ａおよび第２のヨーク２Ａの正面形状を共にＥ型を採用している。このような第１、第２のヨーク１Ａ、２Ａが形成する箱体５０により、第１、第２のコイル３、４および永久磁石６Ａ、６Ｂは、箱体５０内に囲まれて設けられることになり、磁場の漏れはより少なくなり、部品数の縮減、製作コストの低減が図れるという効果を奏する。
【００１６】
実施の形態４．
次に実施の形態４による可動子５を図１１、図１２に基づいて説明する。
図１１は可動子５の組み立て透視図、図１２は斜視図である。可動子５は、可動軸７と、この可動軸７に設けられた鉄心核１４と積層鉄心１５とフタ１６とで構成されている。
積層鉄心１５は、薄鋼板または電磁鋼板による積層構造であり、渦電流の発生を少なくしている。また、積層鉄心１５に設けられた溝部１５Ａは前記鉄心核１４に係合し固着されている。フタ１６は可動子５の剛性を高めるとともに、対向するヨークに永久磁石が設けられている場合には磁路をなす。
なお、図１３に示すようにフタ１６に代替した積層鉄心１７を有する可動子５であれば、さらに渦電流を少なくすることができる。このように可動子５を積層構造とすることにより、渦電流を抑制して動作効率を向上させるという効果がある。
【００１７】
なお、この発明の実施の形態１〜４では、操作装置１００を開閉装置５００の開閉器２００の開閉動作に用いる例について示したが、これに限らず気体や液体の輸送路のバルブの開閉や、ドアの開閉等往復運動をする機器であれば適用可能であるのは言うまでもない。
【００１８】
【発明の効果】
この発明は以上述べたような操作装置およびその操作装置を利用した開閉装置であるので、以下のような優れた効果を奏する。
即ち、ヨークと、ヨーク内に設けられた可動子とコイルと永久磁石とを備えた操作装置であって、ヨークには可動子が接する第１、第２の部位を有しており、前記可動子は前記ヨークの第１、第２の部位間を前記コイルの励磁により往復動するものであり、前記永久磁石は前記可動子に対向して前記ヨークに設けられ、前記可動子を前記ヨークの第１または第２の部位で保持するものであり、前記コイルの作る磁束が通る前記ヨーク内に、前記可動子、コイルおよび永久磁石が磁気的に密閉され、前記ヨークを積層構造としているので、漏れ磁場の少ない操作装置となり、近接配置される電子機器へのノイズ混入や誤動作を小さく抑制することができるとともに、渦電流の発生も少なくし、動作特性の向上した操作装置となるという優れた効果を奏する。
さらにまた、この発明による操作装置を使用した開閉装置であるので、開閉器の開閉動作特性が向上するとともに、電子機器類の近接配置が可能となりコンパクトな開閉装置を提供可能となるという効果もある。
【図面の簡単な説明】
【図１】この発明の実施の形態１による操作装置の斜視図である。
【図２】この発明の実施の形態１による操作装置の組み立て透視図である。
【図３】この発明の実施の形態１による操作装置の断面図である。
【図４】この発明の実施の形態１による操作装置の永久磁石の斜視図である。
【図５】この発明による操作装置の動作原理を示す図である。
【図６】この発明の操作装置を使用した開閉装置を示す概略図である。
【図７】この発明の実施の形態２による操作装置の斜視図である。
【図８】この発明の実施の形態２による操作装置の断面図である。
【図９】この発明の実施の形態３による操作装置の組み立て透視図である。
【図１０】この発明の実施の形態３による操作装置の斜視図である。
【図１１】この発明の実施の形態４による可動子の組み立て透視図である。
【図１２】この発明の実施の形態４による可動子の斜視図である。
【図１３】この発明の実施の形態４に代る他の可動子を示す組み立て透視図である。
【符号の説明】
１第１のヨーク、１Ａヨーク、２，２Ａ第２のヨーク、
３第１のコイル、４第２のコイル、５可動子、
６，６Ａ，６Ｂ，６Ｃ永久磁石、７可動軸、８，８Ａ軸受、９端板、
１０第１の部位、１１第２の部位、１４鉄心核、１５積層鉄心、
１６フタ、１７積層鉄心、５０，５０Ａ箱体、１００操作装置、
２００開閉器、５００開閉装置。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an operating device, and more particularly to an operating device for driving a switch used in a power transmission and distribution system and a switching device using the operating device.
[0002]
[Prior art]
In recent years, as a new driving method of a switchgear or a vacuum circuit breaker, an electromagnetic actuator is about to replace a conventional spring mechanism for the purpose of high reliability and energy saving. In order to save energy, it is essential to improve the operating efficiency of the actuator itself. In addition to the reliability of the actuator itself, the reliability of circuit breakers and switch gears that take into account the effects of electromagnetic noise on surrounding electronic devices is also considered. It is necessary to improve the performance. From such a viewpoint, an electromagnetic actuator including a movable iron core movable within a yoke, a permanent magnet, and a drive coil has been conventionally disclosed (for example, see Patent Document 1).
[0003]
[Patent Document 1]
Takayoshi Nakata et al. "Design and Application of AC / DC Magnets by Finite Element Method", 1st edition, Morikita Publishing Co., Ltd., August 7, 1991, p. 101, FIGS.
[0004]
In the above Patent Document 1, the actuator has an axially symmetric structure (cylindrical shape), the coil is completely surrounded by the iron core, and the coil magnetic field is introduced into the iron core almost without leaking into the external space of the actuator. Since the movable core does not adopt a laminated structure, the effect of eddy currents flowing on the surface of the yoke and the movable core causes the magnetic flux to pass through the magnetic material, making it impossible to increase the driving efficiency of the movable core. there were.
Further, making the columnar structure of the structure shown in Patent Literature 1 into a laminated structure involves considerable difficulties in manufacturing, increases costs, and is not suitable for mass production.
On the other hand, an actuator having a configuration in which a movable core, a coil, and a permanent magnet are provided in a laminated yoke is disclosed (for example, see Patent Document 2).
[0005]
[Patent Document 2]
International Publication WO95 / 07542 Pamphlet Abstract
However, Patent Document 2 has an advantage that eddy current can be suppressed because a laminated yoke is used. However, since only two sides of a substantially rectangular coil are used for a magnetic circuit, a magnetic field generated from the other two sides is used. However, there is a problem that the drive efficiency of the movable iron core is reduced correspondingly.
[0007]
[Problems to be solved by the invention]
As described above, in the structure disclosed in Patent Document 1, the coil is completely surrounded by the yoke, so that the leakage magnetic field of the coil is suppressed. However, due to the influence of the eddy current flowing on the surface of the yoke and the movable core, However, there is a problem that the driving efficiency cannot be increased.
On the other hand, Patent Literature 2 has a problem that since only two sides of the substantially rectangular coil are used for the magnetic circuit, a magnetic field generated from the other two sides leaks, and the driving efficiency is reduced accordingly. Further, when electronic devices and electronic circuits are arranged close to each other, there is also a problem that noise mixing and malfunctions occur in these devices.
The present invention has been made to solve the above-described problems, and has a structure in which a coil, a permanent magnet, and a mover are provided in a yoke, and a magnetically sealed structure is provided in a yoke through which a magnetic flux generated by the coil passes. In addition, the present invention provides an operating device in which the influence of a leakage magnetic field on electronic devices is reduced and the yoke and the movable iron core have a laminated structure, thereby eliminating the influence of eddy current and improving driving characteristics.
[0008]
[Means for Solving the Problems]
An operating device including a yoke, a mover provided in the yoke, a coil, and a permanent magnet, wherein the yoke has first and second portions with which the mover contacts. The mover reciprocates between first and second portions of the yoke by exciting the coil. The permanent magnet is provided on the yoke so as to face the mover. Wherein the movable element, the coil and the permanent magnet are magnetically sealed in the yoke through which the magnetic flux generated by the coil passes, and the yoke has a laminated structure. It is.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiment 1 FIG.
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of the operating device 100 according to the first embodiment, FIG. 2 is a perspective view of an assembled state of each component constituting the operating device 100, and FIG. 3 is a diagram showing a cross section taken along line S-S of FIG. It is. 1 and 2, a box 50 formed by assembling a first yoke 1 and a second yoke 2, and a first coil 3 and a second coil provided inside the box 50. 2, permanent magnets 6A and 6B provided on the first yoke 1 and the second yoke 2 as shown in FIG. The operating device 100 is constituted by the movable shaft 7 and the bearing 8 of the movable shaft 7. Note that the bearing 8 is attached to the box 50. Here, the first and second yokes 1 and 2 and the mover 5 have a laminated structure of thin steel sheets or electromagnetic steel sheets. The front shape of the first yoke 1 as viewed from the direction of the arrow A of the box 50 is E-shaped, and the second yoke 2 is a Japanese type.
The first and second coils 3, 4 are housed in the box body 50, and the coil ends do not protrude from both ends of the second yoke. The end plate 9 is attached to the second yoke 2 and forms a magnetic shield for the box body 50.
[0010]
Here, the width of the permanent magnets 6A and 6B is smaller than the width of the opposing mover 5. As shown in FIG. 1, the first and second coils 3 and 4, the permanent magnets 6 A and 6 B, and the mover 5 are surrounded by the box body 50. , 4 and the magnetic fields generated by the permanent magnets 6A, 6B hardly leak and converge in the box 50, that is, in the operating device 100. Therefore, the holding force by the permanent magnets 6A and 6B and the operating force by the excitation of the first and second coils 3 and 4 are maximally used because there is no leakage magnetic field, and the operating device is small and highly efficient. Can be realized. In the first embodiment, an example is shown in which the end plate 9 is provided. However, since the end portions of the first and second coils 3 and 4 do not protrude from the second yoke end, the first and second coils 3 and 4 are provided. The magnetic fields of the two coils 3 and 4 are substantially shielded and need not be provided solely for magnetic shielding. However, by providing the end plate 9 as a protective cover for the purpose of preventing dust and moisture inside the operating device 100, measures for preventing corrosion due to the environment and atmosphere can be easily performed.
[0011]
Also, an example is shown in which four permanent magnets 6A, 6B are provided on the first and second yokes 1, 2 in opposition to the mover 5, but as shown in FIG. The permanent magnet 6C may be used. With such a configuration, the number of parts can be reduced and the assembling process can be simplified.
Further, any one pair of the four permanent magnets 6A and 6B, for example, only the permanent magnet 6B may be provided on the yoke. That is, the shape and number of the permanent magnets may be selected according to the operation characteristics of the operation device 100.
[0012]
As described above, in the first embodiment, since the magnetic field generated by the operating device 100 is almost shielded, noise is mixed into peripheral electronic devices due to the close arrangement of the electronic devices due to recent downsizing of the switchgear and malfunctions occur. Can be reduced, and the generation of eddy current can be suppressed, resulting in an operating device with improved operating characteristics.
[0013]
Next, the operating principle of the operating device 100 according to the present invention including the first embodiment and an embodiment to be described later, and the opening and closing of the contact of the switch for opening and closing the electric circuit directly connected to the movable shaft 7 of the operating device 100 will be described with reference to FIG. a) to FIG. 5 (c) and FIG.
FIG. 6 is a schematic diagram showing the switching device 500.
(1) FIG. 5A shows that the contact point 210 of the switch 200 is closed, the mover 5 is held at the first portion 10 of the box 50, and the first and second coils 3, 4 Is not excited. In this state, to form a magnetic circuit _{L 1} and _{L 2} by the permanent magnets 6A and 6B, to generate a [Phi _PM2 and respective magnetic flux [Phi _PM1. Attraction between the magnetic circuit _{L 2} [Phi _PM1 is [Phi _PM2 lower Φ _PM1 "Φ _PM2 next than the magnetic resistance towards path to have a magnetic air gap G1 on the movable element 5 and the box 50 Is generated, and the mover 5 is held at the first portion 10.
(2) When the second coil 4 is excited to have the same polarity as the permanent magnets 6A and 6B, magnetic fluxes Φcoil _2-1 and Φcoil _2-2 are generated as shown in FIG. 5B. When the magnetic fluxes Φ _PM1 and Φ _PM2 generated by the permanent magnets 6A and 6B are combined and Φ _PM2 + Φ coil _2-1 > Φ _PM1 −Φ coil _2-2 , the movable element 5 is moved to the second portion 11 of the yoke 1. A pulling force is generated in the direction.
(3) When the mover 5 moves away from the first portion 10 of the box body 50, Φ _PM2 + Φ coil _2-1 >> Φ _PM1 -Φ coil _2-2 . Therefore, as shown in FIG. Moves to reach the second portion 11 of the box 50.
(4) Here, when the excitation of the second coil 4 is stopped, the mover 5 is held at the second portion 11 of the box 50 as shown in FIG.
(5) Next, when trying to drive the mover 5 from the state of FIG. 5 (c) to the state of FIG. 5 (a), by energizing the first coil 3, the same operation principle as described above is obtained. The mover 5 moves and reaches the first portion 10.
As described above, when the mover 5 moves within the box 50, the mover 5 is connected to the movable shaft 7 of the mover 5, and the contact 210 of the switch 200 is opened. Is
[0014]
Embodiment 2 FIG.
Next, a second embodiment will be described with reference to FIGS.
7 is a perspective view of the operation device 100, and FIG. 8 is a cross-sectional view. The coil is not shown. The box body 50A is formed by the yoke 1A, the bearing 8A of the movable shaft 7, and the end plate 9. The front shape of the yoke 1A is the same as that of the first embodiment. The permanent magnet 6C is provided only on the surface of the yoke 1A facing the mover 5. Other components are the same as in the first embodiment. The feature of this structure is that the length of the bearing 8A is the same as the lamination thickness of the yoke 1A, and the number of parts of the yoke constituting the box 50A is reduced, and the production cost can be reduced.
[0015]
Embodiment 3 FIG.
Next, a third embodiment will be described with reference to FIGS.
9 is an assembled perspective view of the operation device 100, and FIG. 10 is a perspective view of the operation device 100. In the yoke forming the box body 50, the first yoke 1A and the second yoke 2A facing each other adopt an E-shape in both front shapes. By the box 50 formed by the first and second yokes 1A and 2A, the first and second coils 3, 4 and the permanent magnets 6A and 6B are provided so as to be surrounded by the box 50. And the leakage of the magnetic field is further reduced, which has the effect of reducing the number of parts and reducing the manufacturing cost.
[0016]
Embodiment 4 FIG.
Next, the mover 5 according to the fourth embodiment will be described with reference to FIGS.
FIG. 11 is an assembled perspective view of the mover 5, and FIG. 12 is a perspective view. The mover 5 includes a movable shaft 7, an iron core 14 provided on the movable shaft 7, a laminated core 15, and a lid 16.
The laminated core 15 has a laminated structure made of a thin steel plate or an electromagnetic steel plate, and reduces generation of eddy current. Further, a groove 15A provided in the laminated core 15 is engaged with and fixed to the core 14. The lid 16 increases the rigidity of the mover 5 and forms a magnetic path when a permanent magnet is provided on the opposing yoke.
In addition, as shown in FIG. 13, if the mover 5 has the laminated iron core 17 instead of the lid 16, the eddy current can be further reduced. By thus forming the mover 5 in a laminated structure, there is an effect that eddy current is suppressed and operation efficiency is improved.
[0017]
In the first to fourth embodiments of the present invention, an example in which the operating device 100 is used for the opening and closing operation of the switch 200 of the opening and closing device 500 has been described. Needless to say, the present invention can be applied to any device that reciprocates, such as opening and closing a door.
[0018]
【The invention's effect】
The present invention is an operating device and an opening / closing device using the operating device as described above, and therefore has the following excellent effects.
That is, an operating device including a yoke, a mover provided in the yoke, a coil, and a permanent magnet, wherein the yoke has first and second portions with which the mover is in contact. The armature reciprocates between the first and second portions of the yoke by exciting the coil. The permanent magnet is provided on the yoke so as to face the mover. Since the movable element, the coil and the permanent magnet are magnetically sealed in the yoke through which the magnetic flux generated by the coil passes, and the yoke has a laminated structure, This is an operating device with a small leakage magnetic field, which can reduce noise mixing and malfunctions to electronic devices placed in close proximity, and also reduces the generation of eddy currents, resulting in an operating device with improved operating characteristics. Achieve the.
Furthermore, since the switching device uses the operating device according to the present invention, the switching operation characteristics of the switching device are improved, and the electronic devices can be arranged close to each other, so that a compact switching device can be provided. .
[Brief description of the drawings]
FIG. 1 is a perspective view of an operating device according to Embodiment 1 of the present invention.
FIG. 2 is an assembled perspective view of the operating device according to the first embodiment of the present invention.
FIG. 3 is a sectional view of the operating device according to the first embodiment of the present invention.
FIG. 4 is a perspective view of a permanent magnet of the operating device according to the first embodiment of the present invention.
FIG. 5 is a diagram showing the operation principle of the operating device according to the present invention.
FIG. 6 is a schematic diagram showing a switching device using the operating device of the present invention.
FIG. 7 is a perspective view of an operating device according to a second embodiment of the present invention.
FIG. 8 is a sectional view of an operating device according to a second embodiment of the present invention.
FIG. 9 is an assembled perspective view of an operating device according to Embodiment 3 of the present invention.
FIG. 10 is a perspective view of an operating device according to a third embodiment of the present invention.
FIG. 11 is an assembled perspective view of a mover according to Embodiment 4 of the present invention.
FIG. 12 is a perspective view of a mover according to Embodiment 4 of the present invention.
FIG. 13 is an assembled perspective view showing another mover instead of the fourth embodiment of the present invention.
[Explanation of symbols]
1 first yoke, 1A yoke, 2, 2A second yoke,
3 first coil, 4 second coil, 5 mover,
6, 6A, 6B, 6C permanent magnet, 7 movable shaft, 8, 8A bearing, 9 end plate,
10 first part, 11 second part, 14 core, 15 laminated core,
16 lid, 17 laminated core, 50, 50A box, 100 operating device,
200 switches, 500 switches.

Claims

An operating device including a yoke, a mover provided in the yoke, a coil, and a permanent magnet, wherein the yoke has first and second portions with which the mover contacts. The mover reciprocates between first and second portions of the yoke by exciting the coil. The permanent magnet is provided on the yoke so as to face the mover. The movable element, the coil and the permanent magnet are magnetically sealed in the yoke through which the magnetic flux generated by the coil passes, and the yoke has a laminated structure. An operation device characterized by the above-mentioned.

An operating device including a box formed by first and second yokes provided to face each other, and a mover, first and second coils, and a permanent magnet provided inside the box. The box has first and second portions where the mover is in contact with the mover, and the mover moves the first or second portion between the first and second portions of the box. The permanent magnet is reciprocated by excitation of a coil, and the permanent magnet is provided on each of the first and second yokes so as to face the mover, and the mover is moved to the first or second portion of the box. An operating device, characterized in that the operating device is held by a user.

A box formed of a yoke having an E-shape in front and provided with an end plate provided on the yoke; a movable member provided inside the box; An operating device including a coil and a permanent magnet, wherein the yoke has first and second portions with which the mover is in contact, and the mover is provided between the first and second portions of the yoke. Is reciprocated by excitation of the first or second coil, and the permanent magnet is provided on the yoke so as to face the mover, and the mover is connected to the first or second portion of the yoke. An operating device, characterized in that the operating device is held by a user.

The operating device according to claim 2, wherein the first yoke forming the box body is E-shaped, and the second yoke is a Japanese type.

The operating device according to claim 2, wherein both the first and second yoke shapes forming the box are E-shaped.

The operating device according to claim 4, wherein an end plate is provided on the second yoke.

The operating device according to claim 2, wherein the yoke has a laminated structure of thin plates.

The operating device according to any one of claims 1 to 3, wherein the mover has a laminated thin plate structure.

The operating device according to claim 8, wherein the mover is fixedly engaged with an iron core provided on a movable shaft.

The operating device according to claim 2, wherein the permanent magnet is provided on the first or second yoke.

The operating device according to any one of claims 1 to 3, wherein at least one permanent magnet is provided on the yoke.

It is a switchgear provided with a switch and an operating device for driving the switch to open and close, wherein the operating device uses the operating device according to any one of claims 1 to 11. Switchgear characterized by.