JP2710669B2 - Electromagnetic switch - Google Patents
Electromagnetic switchInfo
- Publication number
- JP2710669B2 JP2710669B2 JP19623089A JP19623089A JP2710669B2 JP 2710669 B2 JP2710669 B2 JP 2710669B2 JP 19623089 A JP19623089 A JP 19623089A JP 19623089 A JP19623089 A JP 19623089A JP 2710669 B2 JP2710669 B2 JP 2710669B2
- Authority
- JP
- Japan
- Prior art keywords
- movable body
- yoke
- magnetic
- contact
- magnetic attraction
- 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.)
- Expired - Lifetime
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Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、電磁石の電磁吸引力を利用して電気回路を
閉成するための電磁スイッチに関する。Description: TECHNICAL FIELD The present invention relates to an electromagnetic switch for closing an electric circuit using an electromagnetic attraction force of an electromagnet.
電磁スイッチは、種々の電気回路の接点として利用さ
れている。その従来例を、第５図及び第６図により説明
する。Electromagnetic switches are used as contacts for various electric circuits. The conventional example will be described with reference to FIGS. 5 and 6. FIG.
第５図は、電磁スイッチを自動車のスタータ駆動回路
のセフティリレーに用いたもので、まずセフティリレー
の動作概要を説明する。なお、このセフティリレーは、
「HITACTI 自動車部品 新製品サービス資料速報」（8
3.3.11 日立製作所発行）掲載のものから抜粋したもの
である。FIG. 5 shows an example in which an electromagnetic switch is used for a safety relay of a starter drive circuit of an automobile. First, an operation outline of the safety relay will be described. In addition, this safety relay is
"Hitachi Auto Parts New Product Service Bulletin" (8
3.3.11 Published by Hitachi, Ltd.)
第５図において、50はバッテリー、51はキースイッ
チ、52はセフティリレー、53は交流発電機、54はステー
タである。In FIG. 5, 50 is a battery, 51 is a key switch, 52 is a safety relay, 53 is an AC generator, and 54 is a stator.
自動車のキースイッチ51をＣ位置（エンジン始動位
置）にすると、セフティリレー52の電子回路55がバッテ
リーのプラス極と接続され、電磁スイッチ56の電磁コイ
ル57の一端もプラス極と接続される、キースイッチ51を
ACC位置（通常走行位置）にしても、電子回路55はバッ
テリーのプラス極と接続される。When the key switch 51 of the automobile is set to the C position (engine start position), the electronic circuit 55 of the safety relay 52 is connected to the positive pole of the battery, and one end of the electromagnetic coil 57 of the electromagnetic switch 56 is also connected to the positive pole. Switch 51
Even in the ACC position (normal traveling position), the electronic circuit 55 is connected to the positive pole of the battery.
電磁スイッチ56は、電磁コイル57に電流が流れると、
接点を閉じてB,S端子の固定接点59,60が短絡されるよう
になっている。When a current flows through the electromagnetic coil 57, the electromagnetic switch 56
By closing the contacts, the fixed contacts 59 and 60 of the B and S terminals are short-circuited.
電子回路55は、発電機53からＰ端子を経て発電機信号
ひいてはエンジンの回転数に関する電気信号を入力す
る。電子回路55は、この電気信号により、エンジン回転
数が所定の回転数（スイッチ切離しの基準となる回転
数）以上になると、電子回路55の出力段トランジスタ55
aをオフさせ、所定のスイッチ切離し解除回転数以下で
はオンさせ、その中間ではヒステリシス特性を持たせて
いる。The electronic circuit 55 inputs a generator signal from the generator 53 via the P terminal, and thus an electric signal relating to the engine speed. The electronic circuit 55 outputs the output transistor 55 of the electronic circuit 55 when the engine speed becomes equal to or higher than a predetermined speed (the speed at which the switch is disconnected) by the electric signal.
a is turned off, the switch is turned on at or below a predetermined switch disconnection release rotational speed, and a hysteresis characteristic is provided in the middle.
このような構成をなすことで、エンジン始動に当た
り、キースイッチ51を接点Ｃ位置にすると、電磁コイル
57に電流が流れ、スイッチ56の可動接点58が固定接点5
9,60に接してB,S端子が短絡され、スタータ54の電磁ス
イッチ56にバッテリ電流が供給される。すると、スター
タがエンジンを駆動し、やがてエンジンが自力で回転を
開始する。その回転数が所定の切離し回転数以上に上昇
すると、前述したように、出力段トランジスタ55aがオ
フし、電磁コイル57は消磁されて電磁スイッチ56が開放
するので、キースイッチ51をＣ位置にしたままでも、ス
タータへの電源の供給は断たれ、スタータとエンジンの
噛み合いは解かれる。そして、エンジンが切離し回転数
以下に下がっても、所定の切離し解除回転数以下になら
ない限り、この状態は続く。With this configuration, when the engine is started, when the key switch 51 is set to the contact C position, the electromagnetic coil
Current flows through 57, and movable contact 58 of switch 56 is fixed contact 5
The B and S terminals are short-circuited in contact with 9, 60, and the battery current is supplied to the electromagnetic switch 56 of the starter 54. Then, the starter drives the engine, and the engine starts rotating by itself. When the rotation speed rises above a predetermined separation rotation speed, as described above, the output stage transistor 55a is turned off, the electromagnetic coil 57 is demagnetized and the electromagnetic switch 56 is opened, so the key switch 51 is set to the C position. If this is the case, the power supply to the starter is cut off, and the engagement between the starter and the engine is released. This state continues even if the engine speed drops below the disconnection speed, unless the engine speed drops below the predetermined disconnection release speed.
すなわち、このセーフティリレー52は、文字通りエン
ジンが確実にかかったならば、スタータがエンジンによ
り逆に高速で回転されることを防ぎ、また、エンジンが
かかっている時にキースイッチ51を誤ってＣ位置にした
としても、スタータ54が作動してエンジンと撃突して噛
み込みが発生する不具合をなくし、スタータの破壊防止
した耐久性の向上を図る役割をなす。In other words, the safety relay 52 prevents the starter from being rotated at a high speed by the engine when the engine is literally started, and the key switch 51 is erroneously set to the C position when the engine is running. Even if it does, the starter 54 is actuated and strikes against the engine to eliminate the problem of biting, thereby preventing the starter from being broken and improving the durability.
つぎに、上記電磁スイッチ56の従来の内部構造を第６
図の縦断面図により説明する。Next, the conventional internal structure of the electromagnetic switch 56 will be described in the sixth.
This will be described with reference to the vertical sectional view of the figure.
電磁コイル57は、ボビン61に巻かれて、そのコイル両
端子57a,57bがスイッチ容器外部に導出される。電磁ス
イッチ56の電磁機構部は、電磁コイル57に電流を流した
時に磁気回路を形成する継鉄62,ヨーク63,継鉄64,可動
コア65及びこれらの間の磁気ギャップＧで構成され、こ
の時の磁気エネルギーにより、可動コア65は、磁気ギャ
ップＧをなくすように継鉄62側に吸引される。The electromagnetic coil 57 is wound around the bobbin 61, and both terminals 57a and 57b of the coil are led out of the switch container. The electromagnetic mechanism of the electromagnetic switch 56 includes a yoke 62, a yoke 63, a yoke 64, a movable core 65, and a movable core 65 that form a magnetic circuit when a current flows through the electromagnetic coil 57, and a magnetic gap G therebetween. Due to the magnetic energy at that time, the movable core 65 is attracted to the yoke 62 side so as to eliminate the magnetic gap G.
可動コア65には、その外周に銅製の円環状の短格子
（可動接点）58及び絶縁ブッシュ66が重ね合った状態で
摺動可能に嵌装され、この短絡子58,絶縁ブッシュ66を
挾んだ状態で、一方側に戻しばね67が、他方側に圧接ば
ね68が配置されている。An annular short lattice (movable contact) 58 made of copper and an insulating bush 66 are slidably fitted on the movable core 65 so that the short lattice 58 and the insulating bush 66 are superimposed on each other. In this state, a return spring 67 is arranged on one side, and a press contact spring 68 is arranged on the other side.
そして通常（電磁コイル57に電流が流れていない時）
は、戻しばね67の力により、可動コア65及び短絡子58,
絶縁ブッシュ66が図の左方向に押されて、短絡子58とＢ
接点59,S接点60は所定のギャップを保って開放状態にあ
る。電磁コイル57に電流が流れると、前述したように継
鉄62,ヨーク63,継鉄64,可動コア65で磁気回路を形成し
て、可動コア65が戻しばね67に抗して右方向に磁気吸引
され、これに伴って、接点機構系の短絡子58,絶縁ブッ
シュ66は同方向に移動して、短絡子58が、B,S接点59,60
に当接する。可動コア65は、短絡子58,ブッシュ66を残
したまま、圧接ばね68の力に抗して更に右へ進み、継鉄
62と磁気吸着するまで移動する。この状態で、圧接ばね
68の力によりB,S接点59,60に短絡子58が圧接し、B,S接
点は確実に短絡される。And normal (when no current is flowing through the electromagnetic coil 57)
The movable core 65 and the short-circuit element 58,
The insulating bush 66 is pushed to the left in the figure,
The contact 59 and the S contact 60 are open with a predetermined gap maintained. When a current flows through the electromagnetic coil 57, a magnetic circuit is formed by the yoke 62, the yoke 63, the yoke 64, and the movable core 65 as described above, and the movable core 65 magnetizes rightward against the return spring 67. As a result, the short-circuit 58 and the insulating bush 66 of the contact mechanism move in the same direction, and the short-circuit 58 is moved to the B and S contacts 59 and 60.
Abut. The movable core 65 moves further to the right against the force of the pressure contact spring 68 while leaving the short-circuiting element 58 and the bush 66, and
Move until magnetic adsorption with 62. In this state,
With the force of 68, the short-circuiting member 58 presses against the B and S contacts 59 and 60, and the B and S contacts are reliably short-circuited.
なお、電磁スイッチの従来例としては、他に多種類存
在するが、電磁石機構は大同小異である。There are many other types of conventional electromagnetic switches, but the electromagnet mechanisms are different.
一方、電気接点開閉機構は多様であるので、その態様
例を第７図に例示する。On the other hand, since there are various electric contact opening / closing mechanisms, an example of the mode is illustrated in FIG.
第６図では、可動体に伴って短絡子を下側の固定接点
に移動させる場合には、電磁石を励磁しての磁気吸着力
により、上側の固定接点に移動させる場合には、電磁石
を消磁して可動体を戻しばねの力により行うものとして
ある。これらの接点機構は、平行２接点、平行３接点以
上であってもよい。In FIG. 6, when the short-circuiting element is moved to the lower fixed contact with the movable body, the electromagnet is demagnetized when the electromagnet is moved to the upper fixed contact by the magnetic attraction force excited. Then, the movable body is moved by the force of the return spring. These contact mechanisms may have two parallel contacts, three parallel contacts or more.
前述した従来技術では、電磁コイル，ヨーク，可動コ
ア等よりなる電磁駆動機構（磁気回路形成機構）と、短
絡子（可動接点），固定接点等で構成される接点機構と
を、別系統で構成してある。そのために、電磁スイッチ
の機構全体の部品点数が増加すると共に、それぞれの機
構を設置スペースを要するために、構造が複雑で装置が
大形化する傾向があった。In the prior art described above, an electromagnetic drive mechanism (magnetic circuit forming mechanism) composed of an electromagnetic coil, a yoke, a movable core, and the like, and a contact mechanism composed of a short-circuit (movable contact), a fixed contact, and the like are configured as separate systems. I have. For this reason, the number of components of the entire mechanism of the electromagnetic switch is increased, and an installation space for each mechanism is required. Therefore, the structure tends to be complicated and the device tends to be large.
本発明は、以上の点に鑑みてなされたもので、その目
的とするところは、部品点数の削減，構造の簡略化を図
って、小形，軽量にして製品コストの低減を図り得る電
磁スイッチを提供することにある。The present invention has been made in view of the above points, and an object of the present invention is to provide an electromagnetic switch capable of reducing the number of parts, simplifying the structure, and reducing the size and weight to reduce the product cost. To provide.
本発明は、上記目的を達成するための基本的な課題解
決手段（第１の課題解決手段）として、次のように構成
する。The present invention is configured as follows as basic problem solving means (first problem solving means) for achieving the above object.
すなわち、電磁石と、この電磁石と共に磁気回路の一
部をなして、電磁石の励磁により磁気吸着可能に配置さ
れる可動体とを有し、且つ前記電磁石と前記可動体との
磁気吸着面同士を良導電性を有する強磁性体により形成
して、磁気回路の一部となるこれらの磁気吸着面により
電気回路を閉成するための電気接点を構成してなる。That is, it has an electromagnet and a movable body that forms a part of a magnetic circuit together with the electromagnet and that is arranged to be magnetically attractable by excitation of the electromagnet, and that the magnetic attraction surfaces of the electromagnet and the movable body are good. An electric contact for closing an electric circuit is formed by these magnetic attracting surfaces which are formed of a conductive ferromagnetic material and become a part of a magnetic circuit.
第2,第３の課題解決手段は、第１の解決手段の応用例
である。これらを、内容の理解を容易にするため、第１
図から第４図までの実施例の符号を引用して説明する。The second and third problem solving means are application examples of the first solving means. In order to make the contents easy to understand,
The description will be made with reference to the reference numerals of the embodiments from FIG. 4 to FIG.
第２の課題解決手段を、第１図の符号を引用して説明
すれば、 固定ヨーク１内に、電磁コイル３と、磁性を有するコ
ア部4a付きの可動体４とを内装し、このヨーク1,コア部
4a等により、電磁コイル通電時に磁気回路を形成して、
可動体４が戻しばね５の力に抗してヨーク１側に磁気吸
着されるよう設定し、 且つ、磁気回路の一部となるヨーク１と可動体４との
磁気吸着面１′,4′同士を良導電性を有する強磁性体で
形成し、これらの磁気吸着面１′,4′にて電気回路を閉
成するための電気接点を構成してなる。なお、本課題解
決手段では、可動体４の少なくとも一部が磁性を有する
コア部4aで構成されるが、可動体４のコア部以外には、
非磁性部材を用いても良く、例えば、第２図では、可動
体４を磁性のコア部4aと非磁性の円板部4b′とで構成し
ている。但し、磁気回路の一部たる可動体側の磁気吸着
部４′は、強磁性（良導電性でもある）であることは、
既述した通りである。The second means for solving the problem will be described with reference to the reference numerals in FIG. 1. A fixed yoke 1 is provided with an electromagnetic coil 3 and a movable body 4 having a magnetic core 4a. 1, core
By 4a etc., a magnetic circuit is formed when the electromagnetic coil is energized,
The movable body 4 is set to be magnetically attracted to the yoke 1 side against the force of the return spring 5, and the magnetic attraction surfaces 1 ', 4' between the yoke 1 and the movable body 4, which are part of a magnetic circuit. The magnetic attracting surfaces 1 'and 4' are formed of a ferromagnetic material having good conductivity, and constitute an electric contact for closing an electric circuit. In the present problem solving means, at least a part of the movable body 4 is constituted by a core part 4a having magnetism.
A non-magnetic member may be used. For example, in FIG. 2, the movable body 4 is composed of a magnetic core portion 4a and a non-magnetic disk portion 4b '. However, the magnetic attraction portion 4 'on the movable body side, which is a part of the magnetic circuit, is ferromagnetic (also has good conductivity).
As described above.
第３の課題解決手段は、第４図の符号を用いて説明す
ると、 固定ヨーク１、電磁コイル３、可動体４等の配置構造
は基本的に第２の課題解決手段と同様で、磁気回路の一
部となるヨーク１と可動体４との磁気吸着面１′,4′同
士を良導電性を有する強磁性体で形成し、これらの磁気
吸着面にて電気回路を閉成するための電気接点を構成
し、 且つ可動体４は、電磁コイル３の非通電時に可動体４
が戻しばね５の力により反磁気吸引側に移動すると、そ
の移動を所定の範囲で規制するストッパ８により係止さ
れる構造とし、 電磁コイル非通電時に当接するストッパ８と可動体４
とのそれぞれの係止面８′,4″にも、磁気吸着時の電気
接点と別の回路切換用の電気接点17,18及び４″を配置
してなる。The third problem solving means will be described with reference to FIG. 4. The arrangement structure of the fixed yoke 1, the electromagnetic coil 3, the movable body 4 and the like is basically the same as that of the second problem solving means. The magnetic attraction surfaces 1 ', 4' of the yoke 1 and the movable body 4, which are part of the magnetic attraction surface, are formed of ferromagnetic material having good conductivity, and these magnetic attraction surfaces are used to close an electric circuit. The movable body 4 constitutes an electrical contact, and the movable body 4
Is moved by the force of the return spring 5 to the anti-magnetic attraction side, the movement is stopped by a stopper 8 for restricting the movement within a predetermined range.
The electrical contacts for magnetic attraction and other electrical contacts 17, 18 and 4 '' for circuit switching are also arranged on the respective locking surfaces 8 'and 4 ".
第１の課題解決手段によれば、電磁石の通電時（励磁
時）には、電磁石と可動体とが磁気回路の形成要素とな
り、電磁石からの磁気エネルギーによって、可動体が電
磁右側に磁気吸着される。According to the first problem solving means, when the electromagnet is energized (excited), the electromagnet and the movable body form a magnetic circuit forming element, and the movable body is magnetically attracted to the electromagnetic right side by the magnetic energy from the electromagnet. You.
そして、この電磁石と可動体との磁気吸着面同士が、
電気回路の接点を構成するために、磁気吸着により電気
回路を閉成することになる。この場合、電磁石側の磁気
吸着面（固定接点として機能）及び可動体側の磁気吸着
面（可動接点として機能）は、良導電性を有する強磁性
体であるので、その接触を確実に行い、且つ電流を充分
に流し、スイッチとしての機能を良好に発揮することが
できる。And the magnetic attraction surfaces of the electromagnet and the movable body are
In order to form the contacts of the electric circuit, the electric circuit is closed by magnetic attraction. In this case, the magnetic attraction surface on the electromagnet side (functioning as a fixed contact) and the magnetic attraction surface on the movable body side (functioning as a movable contact) are ferromagnetic materials having good conductivity. A sufficient current can be passed, and the function as a switch can be exhibited well.
しかして、本課題解決手段によれば、電磁スイッチの
磁気回路の一部（電磁石と可動体との磁気吸着面）に、
電気接点を設定することが可能となり、従来は別系統で
構成されていた電磁駆動機構（磁気回路形成機構）と電
気接点機構とを、共通の部品を用いて兼用させることが
可能となる。従って、部品点数の削減、構造の簡略化を
図り、これに伴って装置の小形化、製作コストの低減化
に貢献することができる。Thus, according to this problem solving means, a part of the magnetic circuit of the electromagnetic switch (the magnetic attraction surface between the electromagnet and the movable body)
The electric contact can be set, and the electromagnetic drive mechanism (magnetic circuit forming mechanism) and the electric contact mechanism, which are conventionally configured as separate systems, can be shared by using common components. Therefore, the number of parts can be reduced and the structure can be simplified, which can contribute to downsizing of the apparatus and reduction in manufacturing cost.
次に第２の課題解決手段では、第１の課題解決手段に
対応する電磁石が、電磁コイル３により励磁される固定
ヨーク１によって構成されることになる。そして、電磁
コイル３の通電時には、ヨーク１及び可動体４のコア部
4aが磁気回路を形成して、可動体４が戻しばね５の力に
抗してヨーク１側に磁気吸着される。ヨーク１と可動体
４との磁気吸着面１′,4′が良導電性の強磁性体で構成
することから、この磁気吸着に接点機能を与えて、電気
回路が閉成される。この場合の、利点は、上記第１の課
題解決手段で述べた通りである。なお、電磁コイル３の
非通電時には、戻しばね５の力により、ヨーク１から可
動体４が引き離されて、電気回路の接点が開放される。Next, in the second problem solving means, the electromagnet corresponding to the first problem solving means is constituted by the fixed yoke 1 excited by the electromagnetic coil 3. When the electromagnetic coil 3 is energized, the core portion of the yoke 1 and the movable body 4
4a forms a magnetic circuit, and the movable body 4 is magnetically attracted to the yoke 1 side against the force of the return spring 5. Since the magnetic attraction surfaces 1 'and 4' of the yoke 1 and the movable body 4 are made of a ferromagnetic material having good conductivity, a contact function is given to the magnetic attraction and the electric circuit is closed. The advantages in this case are as described in the first problem solving means. When the electromagnetic coil 3 is not energized, the movable body 4 is separated from the yoke 1 by the force of the return spring 5, and the contacts of the electric circuit are opened.
次に第３の課題解決手段によれば、電磁コイル３の通
電時の動作は、第２の課題解決手段同様で、磁気回路形
成要素のヨーク１と可動体４との磁気吸着面１′,4′同
士が電気接点を兼ねて電気回路を閉成する。Next, according to the third problem solving means, the operation when the electromagnetic coil 3 is energized is the same as in the second problem solving means, and the magnetic attraction surfaces 1 ′ of the yoke 1 and the movable body 4 of the magnetic circuit forming element, The 4's also serve as electrical contacts and close the electrical circuit.
また、電磁コイル３の非通電時には、第４図に示す如
く戻しばね５の力により、磁気吸着面（電気接点）
１′,4′同士は離れ、可動体４は反磁気吸引側に移動
し、ストッパ８に係止する。すると、可動体４とストッ
パ８との係止面４″,8′にも、別の接点４″及び17,18
が形成されているので、この接点同士が短絡して、別の
電気回路を閉成する。しかして、本課題解決手段では、
接点を複数系統として電気回路を切換える場合の電磁ス
イッチにも、適用が可能となる。When the electromagnetic coil 3 is not energized, the force of the return spring 5 causes the magnetic attraction surface (electric contact) as shown in FIG.
The movable members 4 move to the anti-magnetic attraction side and are locked by the stoppers 8. Then, another contact 4 "and 17, 18 are also provided on the locking surface 4", 8 'between the movable body 4 and the stopper 8.
Is formed, these contacts are short-circuited, and another electric circuit is closed. Thus, in this problem solving means,
The present invention can also be applied to an electromagnetic switch in a case where an electric circuit is switched using a plurality of contacts as a system.
本発明の実施例を第１図ないし第４図により説明す
る。An embodiment of the present invention will be described with reference to FIGS.
第１図は本発明の第１実施例を示す縦断面図である。 FIG. 1 is a longitudinal sectional view showing a first embodiment of the present invention.
第１図において、１は一部（図面では上部）が開口さ
れた円筒形のヨークで、ヨーク１内部には、ボビン（電
気絶縁材）２に巻装された電磁コイル３と、ボビン２の
軸孔2aに軸方向に移動可能に挿入された可動体４と、戻
しばね５が内装される。In FIG. 1, reference numeral 1 denotes a cylindrical yoke having a part (the upper part in the drawing) opened. Inside the yoke 1, an electromagnetic coil 3 wound around a bobbin (electric insulating material) 2 and a bobbin 2 The movable body 4 inserted in the axial hole 2a so as to be movable in the axial direction, and a return spring 5 are provided therein.
可動体４は、円柱コア部4aとその一端に形成した円板
部4bとで構成され、円柱コア部4aがボビン軸孔2aに挿入
され、円板コア部4bに軸孔2a外部に配置される。本実施
例の円柱コア部4aと円板部4bとは、同じ磁性材料で一体
成形される。ボビン軸孔2a内には、ばね受けとなる段部
６付きのばね収納部７が形成され、このばね収納部７内
に戻しばね５が嵌装される。戻しばね５の一端は、可動
体４の円板部4bの下面（裏面）に接して、ばね５の力が
円板部4bを介して可動体４に押し上げ力として作用す
る。The movable body 4 includes a cylindrical core portion 4a and a disk portion 4b formed at one end thereof. The cylindrical core portion 4a is inserted into the bobbin shaft hole 2a, and is disposed outside the shaft hole 2a in the disk core portion 4b. You. The cylindrical core portion 4a and the disk portion 4b of this embodiment are integrally formed of the same magnetic material. In the bobbin shaft hole 2a, a spring storage portion 7 having a step portion 6 serving as a spring receiver is formed, and the return spring 5 is fitted in the spring storage portion 7. One end of the return spring 5 is in contact with the lower surface (back surface) of the disk portion 4b of the movable body 4, and the force of the spring 5 acts as a push-up force on the movable body 4 via the disk portion 4b.
８は、電磁気絶縁材で形成された外装を兼ねる容器状
のストッパで、ヨーク１と可動体４は、このストッパ８
により囲まれており、電磁コイル３の非通電時には、可
動体４の円板部4bの上面が戻しばね５の力でストッパ８
に当接し、円板部4bがヨーク１の上面１′と規定のギャ
ップG1以上に離れないよう設定してある。このギャップ
G1は、可動体４の下面とヨーク１内底間のギャップG2よ
りも小さくして、可動体４が電磁コイル３の励磁作用に
より磁気吸引された時に、その円板部4bの下面４′がヨ
ーク１の上面１′に当接する構造としてある。ヨーク１
と可動体４とは、強磁性で良導電性，高耐食性を有する
鋼材、例えば、フェライト系ステンレス鋼からできてい
る。Reference numeral 8 denotes a container-like stopper formed of an electromagnetic insulating material and also serving as an exterior, and the yoke 1 and the movable body 4
When the electromagnetic coil 3 is not energized, the upper surface of the disk portion 4 b of the movable body 4
So that the disk portion 4b is not separated from the upper surface 1 'of the yoke 1 by more than a specified gap G1. This gap
G1 is smaller than the gap G2 between the lower surface of the movable body 4 and the inner bottom of the yoke 1, so that when the movable body 4 is magnetically attracted by the exciting action of the electromagnetic coil 3, the lower surface 4 'of the disk portion 4b is The structure is in contact with the upper surface 1 'of the yoke 1. York 1
The movable body 4 is made of a ferromagnetic steel having good conductivity and high corrosion resistance, for example, a ferritic stainless steel.
電磁コイル３のリード線a,bは、ストッパ８の外部に
引き出されている。Lead wires a and b of the electromagnetic coil 3 are drawn out of the stopper 8.
9,10は、各種の電気機器に電流を供給するためのリー
ド線で、リード線９はヨーク１側に接続され、リード線
10はストッパ８の上部に固着した中継部（導電金属）11
を介して可動体４の円板部4bに接続される。9 and 10 are lead wires for supplying current to various electric devices, and the lead wire 9 is connected to the yoke 1 side,
10 is a relay portion (conductive metal) fixed to the upper portion of the stopper 8
Is connected to the disk portion 4b of the movable body 4 via the.
次に本実施例の動作について説明する。 Next, the operation of this embodiment will be described.
上記構成よりなれば、電磁コイル３に必要量の電流を
流して励磁すると、ヨーク1,可動体4,その間の磁気ギャ
ップG1,G2により磁気回路が形成されて、磁束が発生
し、可動体４は戻しばね５の力に抗して磁気吸引され
て、その円板部4bの下面４′がヨーク１上面１′に磁気
吸着される。この磁気吸着面となる円板部4bの下面４′
及びヨーク１の上面１′は、十分な平面度が確保され、
更に両平面が良好に密着できるよう、可動体４の円柱コ
ア部4a外周と、それを囲む戻しばね5,ボビン２の内周面
には、適度な隙間が確保され、軸心のずれは吸収される
ようになっている。According to the above configuration, when a required amount of current is supplied to the electromagnetic coil 3 to excite it, a magnetic circuit is formed by the yoke 1, the movable body 4, and the magnetic gaps G1, G2 therebetween, and a magnetic flux is generated. Is magnetically attracted against the force of the return spring 5, and the lower surface 4 'of the disk portion 4b is magnetically attracted to the upper surface 1' of the yoke 1. The lower surface 4 'of the disk portion 4b serving as the magnetic attraction surface
And the upper surface 1 'of the yoke 1 has sufficient flatness,
Further, an appropriate gap is secured between the outer periphery of the cylindrical core portion 4a of the movable body 4 and the inner peripheral surface of the return spring 5 and the bobbin 2 so that both planes can be in close contact with each other. It is supposed to be.
このようにして、可動体４の円板部下面４′とヨーク
１の上面とが確実に磁気吸着されると、この吸着面は、
同時に電気接点として機能して、その接点を閉成するこ
とになり、リード線９とリード線10間に確実に電流が流
れる。In this way, when the lower surface 4 ′ of the disk portion of the movable body 4 and the upper surface of the yoke 1 are securely magnetically attracted, the attracting surface becomes
At the same time, it functions as an electric contact and closes the contact, so that a current reliably flows between the lead wire 9 and the lead wire 10.
しかして本実施例によれば、可動体４とヨーク１と
が、電磁スイッチの駆動機構たる磁気回路としての役割
をなすほかに、可動体４の磁気吸着面４′がスイッチの
可動接点、ヨーク１の磁気吸着面１′が固定接点として
機能するので、磁気回路と電気接点機構とを兼用させ
て、部品の簡略化を図り、構造簡単にして、小形、しか
も製作コストの低減化を図り得る。また、戻しばね５
も、可動体４と共にボビン軸孔2aのスペースを利用して
嵌装する構造を採用するので、そのばねの占有スペース
を軸孔2aに吸収させて装置の小形化をより促進させるこ
とができる。According to the present embodiment, the movable body 4 and the yoke 1 serve as a magnetic circuit as a drive mechanism of the electromagnetic switch, and the magnetic attraction surface 4 'of the movable body 4 serves as a movable contact of the switch and the yoke. Since the magnetic attraction surface 1 'functions as a fixed contact, the magnetic circuit and the electric contact mechanism can be used together to simplify parts, simplify the structure, reduce the size, and reduce the manufacturing cost. . Also, the return spring 5
Also, since a structure is adopted in which the space is occupied using the space of the bobbin shaft hole 2a together with the movable body 4, the space occupied by the spring is absorbed by the shaft hole 2a, and the size of the device can be further reduced.
第２図は本発明の第２実施例の縦断面図を示し、第３
図はその部分断面図で、図中、第１実施例に用いた符号
と同一のものは、同一或いは共通する要素を示す。FIG. 2 is a longitudinal sectional view of a second embodiment of the present invention, and FIG.
The figure is a partial cross-sectional view, in which the same reference numerals used in the first embodiment denote the same or common elements.
以下、第２実施例を第１実施例と異なる点を主に説明
する。Hereinafter, the points of the second embodiment different from the first embodiment will be mainly described.
ヨーク１は、第１実施例と同様に円筒形を呈するが、
その上部開口部の内側にゴム性の電磁気絶縁物からなる
環状の弾性体13を介して、固定接点となる導電性の円環
部1aが係合されている。この円環部1aは、第３図に示さ
れるように、その延長部1a′が、ヨーク１の横壁に設け
た窓14を介してヨーク１外に引き出され、この延長部1
a′を介して、リード線10が接続される。The yoke 1 has a cylindrical shape as in the first embodiment,
A conductive annular portion 1a serving as a fixed contact is engaged with the inside of the upper opening via an annular elastic body 13 made of a rubber electromagnetic insulator. As shown in FIG. 3, the annular portion 1a has its extended portion 1a 'drawn out of the yoke 1 through a window 14 provided on the side wall of the yoke 1, and the extended portion 1a'
The lead wire 10 is connected via a '.
また、円環部1aは、その上面がヨーク１の上面１′と
同一平面レベルとなるよう配置される。The annular portion 1a is arranged so that the upper surface thereof is at the same plane level as the upper surface 1 'of the yoke 1.
また、可動体４は、円柱コア4aと円板部4b′とで構成
されるが、本実施例における円板部4b′は、第１実施例
と異なり電気絶縁物で構成されており、この円板部4b′
の下面に、ヨーク１と同材質の円環部４−１が固定配置
される。The movable body 4 is composed of a columnar core 4a and a disk portion 4b '. Unlike the first embodiment, the disk portion 4b' of this embodiment is composed of an electrical insulator. Disc part 4b '
An annular portion 4-1 of the same material as the yoke 1 is fixedly arranged on the lower surface of the yoke 1.
なお、ヨーク１と円環部1aとの係合は、第２図に示す
ように円環部1a外周に形成した段差突部15がヨーク１の
上部突起16の下面に係合する構造を呈する。このような
係合構造にしたのは、可動体４側に設けた円環部４−１
の磁気吸着力により、円環部1aがヨーク１外部に抜け出
ないようするためである。Incidentally, the engagement between the yoke 1 and the annular portion 1a has a structure in which the step projection 15 formed on the outer periphery of the annular portion 1a engages with the lower surface of the upper projection 16 of the yoke 1 as shown in FIG. . The reason why such an engagement structure is adopted is that the annular portion 4-1 provided on the movable body 4 side is used.
This is to prevent the annular portion 1a from coming out of the yoke 1 due to the magnetic attraction force.
本実施例では、電磁コイル３に必要量の電流を流す
と、ヨーク1,可動体４の円環部４−1,ヨーク１側の円環
部1a,可動体４の円柱コア部4a及び磁気ギャップG1,G2等
で磁気回路が形成される。その結果、可動体４は戻しば
ね５の力に抗して下側に吸引され、可動体４の円環部
（可動接点）４−１の下面４′がヨーク１の上面（固定
接点）１′及びヨークの一部となる円環部（固定接点）
1aの上面にまたがって吸着される。In this embodiment, when a required amount of current is applied to the electromagnetic coil 3, the yoke 1, the annular portion 4-1 of the movable body 4, the annular portion 1a on the yoke 1, the cylindrical core portion 4a of the movable body 4, and the magnetic field. A magnetic circuit is formed by the gaps G1, G2, and the like. As a result, the movable body 4 is sucked downward against the force of the return spring 5, and the lower surface 4 'of the annular portion (movable contact) 4-1 of the movable body 4 is moved to the upper surface (fixed contact) 1 of the yoke 1. 'And an annular part that becomes part of the yoke (fixed contact)
Adsorbed across the upper surface of 1a.
吸着までの過程では、ヨーク１と円環部1aとの間の弾
性体13による磁気ギャップが磁気回路にとって大きな磁
気抵抗を形成している。しかし、上記吸着により、この
磁気ギャップは、円環部４−１の存在で短絡される。な
ぜなら、円環部1aは、ヨーク１に弾性体13を介して緩く
保持され、かつ上面は十分な平面度がでているので、可
動体４側の円環部４−１に吸着面全面にわたり吸着され
るからである。In the process up to the attraction, the magnetic gap formed by the elastic body 13 between the yoke 1 and the annular portion 1a forms a large magnetic resistance for the magnetic circuit. However, the magnetic gap is short-circuited due to the presence of the annular portion 4-1 due to the above-mentioned adsorption. Because the annular portion 1a is loosely held by the yoke 1 via the elastic body 13 and the upper surface has a sufficient flatness, the annular portion 4-1 on the movable body 4 side covers the entire suction surface. This is because it is adsorbed.
その結果、電磁コイル３に励磁したときには、ヨーク
１の上面１′、円環部４−１の下面、円環部1aの３者
は、確実に対象範囲全面で吸着しあい、同時に電気接点
として圧接されるので、リード線９とリード線10とは確
実に接続され、電流を流し得る。As a result, when the electromagnetic coil 3 is excited, the upper surface 1 'of the yoke 1, the lower surface of the annular portion 4-1, and the annular portion 1a are surely attracted to each other over the entire target range, and are simultaneously pressed into electrical contact. Therefore, the lead wire 9 and the lead wire 10 are securely connected, and a current can flow.
しかして、本実施例によれば、ヨーク１を接点として
利用して、且つ円環部1a,4−１もスペースをさ程要しな
い構造を採用し得るので、部品点数の低減化，装置全体
の小形化を図り得る。According to the present embodiment, the yoke 1 can be used as a contact point, and the annular portions 1a and 4-1 can adopt a structure that does not require much space. Can be reduced in size.
しかも、本実施例では、リード線10を固定接点たる円
環部1aに接続するので、第１実施例のように可動体４と
共にリード線10が動く構造よりも、リード線10の耐久性
を更に向上させることができる。Moreover, in this embodiment, since the lead wire 10 is connected to the annular portion 1a as a fixed contact, the durability of the lead wire 10 is lower than the structure in which the lead wire 10 moves together with the movable body 4 as in the first embodiment. It can be further improved.
第４図は、本発明の第３実施例を示す縦断面図であ
る。FIG. 4 is a longitudinal sectional view showing a third embodiment of the present invention.
本実施例は、可動体４の構造や、ヨーク１と円環部1a
及び絶縁弾性体13の構造は第２実施例と共通するもの
で、異なる点は、第２実施例よりもスイッチ回路を更に
１組追加した点にある。In this embodiment, the structure of the movable body 4 and the yoke 1 and the annular portion 1a are described.
The structure of the insulating elastic body 13 is the same as that of the second embodiment, and is different from the second embodiment in that a switch circuit is further added to the second embodiment.
以下、第２実施例と異なる点を主に説明する。 Hereinafter, points different from the second embodiment will be mainly described.
本実施例における可動体４は、第２実施例と同様に円
柱コア4aと円板部（電磁気絶縁製）4b′とで構成される
が、円板部4b′には、ヨーク１と同材質の円環部４−２
が配設される。The movable body 4 in this embodiment is composed of a cylindrical core 4a and a disk portion (made of electromagnetic insulation) 4b 'as in the second embodiment, but the disk portion 4b' has the same material as the yoke 1. Annular part 4-2 of
Is arranged.
円環部４−２は、円板部4bの上下面を貫通して、その
上面４″，下面４′のそれぞれが切換タイプの可動接点
を構成する。すなわち、円環部４−２の下面４′は、ヨ
ーク１の上面１′及び円環部1aの上面に対向する。ま
た、円環部４−２の上面４″は、ストッパ８の上部内側
に配設した固定接点17,18の下面に対向して配置され
る。この固定接点17,18は銅製で円弧状を呈している。
この固定接点17,18の下面と可動接点たる円環部４−２
の上面とは、十分な平面度を有するよう形成され、両者
が当接した場合には、良好な密着度が保たれるよう配慮
されてる。The annular portion 4-2 penetrates the upper and lower surfaces of the disk portion 4b, and the upper surface 4 ″ and the lower surface 4 ′ constitute switching type movable contacts, that is, the lower surface of the annular portion 4-2. 4 'is opposed to the upper surface 1' of the yoke 1 and the upper surface of the annular portion 1a, and the upper surface 4 "of the annular portion 4-2 is connected to the fixed contacts 17 and 18 disposed inside the upper portion of the stopper 8. It is arranged facing the lower surface. The fixed contacts 17, 18 are made of copper and have an arc shape.
Lower surfaces of the fixed contacts 17 and 18 and a ring portion 4-2 serving as a movable contact.
Is formed so as to have a sufficient flatness, and when both come into contact with each other, care is taken to maintain good adhesion.
本実施例では、上記構成をなすことにより、電磁コイ
ル３に電流が流れていない時には、可動体４が戻しばね
５の力により押し上げられて、円環部４−２の上面４″
がストッパ８側に設けた固定接点17,18に圧接される。
そのため、リード線19,20間に電流が確実に流れる。In the present embodiment, with the above configuration, when no current is flowing through the electromagnetic coil 3, the movable body 4 is pushed up by the force of the return spring 5, and the upper surface 4 ″ of the annular portion 4-2.
Are pressed against the fixed contacts 17 and 18 provided on the stopper 8 side.
Therefore, a current reliably flows between the lead wires 19 and 20.
電磁コイル３に電流を流した場合には、第２実施例で
も既述したように、可動体４が下側に磁気吸引されて、
円環部４−２の下面４′の接点がヨーク上面１′及び円
環部1aの上面に圧接することになる。そして、リード線
9,10間に確実に電流が流れる。When a current is applied to the electromagnetic coil 3, as described in the second embodiment, the movable body 4 is magnetically attracted to the lower side.
The contact on the lower surface 4 'of the annular portion 4-2 comes into pressure contact with the upper surface 1' of the yoke and the upper surface of the annular portion 1a. And lead wire
The current flows reliably between 9,10.
なお、本実施例では、円環部４−２の上面とストッパ
側の固定接点17,18との平面度が不十分であっても、接
点17,18の材料である銅は、円環部４−２の鋼材より軟
らかいので、電磁スイッチを使用している間に、両接点
の圧接面が、平面度を形成する方向に摩耗され、そのた
め、十分な密着が確保される。In this embodiment, even if the flatness between the upper surface of the annular portion 4-2 and the fixed contacts 17 and 18 on the stopper side is insufficient, copper as the material of the contacts 17 and 18 is not used. Since it is softer than the steel material of 4-2, while using the electromagnetic switch, the press contact surfaces of both contacts are worn in a direction of forming flatness, and therefore, sufficient adhesion is ensured.
しかして、本実施例によれば、スイッチ回路を多数組
み込んでも、本発明の所期の目的を奏することができ
る。Thus, according to the present embodiment, the intended object of the present invention can be achieved even if a large number of switch circuits are incorporated.
なお、以上の各実施例では、可動体４或いはその円柱
コア部4aを強磁性，良導電性及び高耐食性を有する鋼材
で構成すると、比較的高価なものとなる。これを解消す
るには、電気接点となる吸着面にのみこの部材を適用
し、その他には、磁性を有する汎用の鋼材を用いれば、
コストをより低減することができる。また、以上の実施
例は、第７図の従来の電磁スイッチのの置き換え
例を示したものであるが、第７図の他の接点方式に本発
明を適用可能であることは、勿論のことである。In each of the above embodiments, if the movable body 4 or the cylindrical core portion 4a thereof is made of a steel material having ferromagnetism, good conductivity and high corrosion resistance, it becomes relatively expensive. To solve this, apply this member only to the adsorption surface that will be the electrical contact, otherwise, if a general-purpose steel material with magnetism is used,
The cost can be further reduced. Although the above embodiment shows an example of replacing the conventional electromagnetic switch shown in FIG. 7, it is needless to say that the present invention can be applied to other contact types shown in FIG. It is.
以上のように本発明によれば、電磁駆動機構における
磁気回路の一部となる、電磁石（例えばヨーク）と可動
体との磁気吸着面同士を良導電性を有する強磁性体で構
成し、この磁気吸着面を電気接点とすることから、電気
接点系と電磁駆動機構（磁気回路形成機構）系を共通し
た部品で構成することができ、部品点数の削減及び構造
の簡略化を図ると共に、装置の小形化と製作コストの低
減を図り得る。As described above, according to the present invention, the magnetic attraction surfaces of an electromagnet (for example, a yoke) and a movable body, which are part of a magnetic circuit in an electromagnetic drive mechanism, are formed of a ferromagnetic material having good conductivity. Since the magnetic attraction surface is an electric contact, the electric contact system and the electromagnetic drive mechanism (magnetic circuit forming mechanism) system can be constituted by common parts, thereby reducing the number of parts and simplifying the structure, Can be reduced in size and the manufacturing cost can be reduced.
第１図は、本発明の第１実施例を示す縦断面図、第２図
は、本発明の第２実施例を示す縦断面図、第３図は、第
２実施例の一部断面図、第４図は、本発明の第３実施例
を示す縦断面図、第５図は、本発明の適用対象となる一
例として自動車用のセーフティリレーを示す電気回路
図、第６図は、従来の電磁スイッチの一例を示す縦断面
図、第７図は、従来より知られている各種の電気接点の
型を示す説明図である。 1,3……電磁石（固定ヨーク、電磁コイル）、１′……
ヨーク１の磁気吸着面（固定接点）、1a……円環部（固
定接点）、２……ボビン、2a……ボビン軸孔、４……可
動体、４′……可動体の磁気吸着面（可動接点）、４−
1,4−２……可動接点用の円環部（可動体の一部）、4a
……円柱コア部、4b……円板部、4b′……絶縁性円板
部、５……戻しばね、６……ばね受け部、７……ばね収
納部、８……ストッパ、9,10……リード線、11……中継
部、13……絶縁性弾性体、17,18……固定接点、19,20…
…リード線。1 is a longitudinal sectional view showing a first embodiment of the present invention, FIG. 2 is a longitudinal sectional view showing a second embodiment of the present invention, and FIG. 3 is a partial sectional view of the second embodiment. FIG. 4 is a longitudinal sectional view showing a third embodiment of the present invention, FIG. 5 is an electric circuit diagram showing an automotive safety relay as an example to which the present invention is applied, and FIG. FIG. 7 is a longitudinal sectional view showing an example of the electromagnetic switch of the first embodiment, and FIG. 7 is an explanatory view showing various types of conventionally known electric contacts. 1,3 ... electromagnet (fixed yoke, electromagnetic coil), 1 '...
Magnetic attracting surface of yoke 1 (fixed contact), 1a ... annular part (fixed contact), 2 ... bobbin, 2a ... bobbin shaft hole, 4 ... movable body, 4 '... magnetic attracting surface of movable body (Movable contact), 4-
1,4-2: Annular part for movable contact (part of movable body), 4a
... Cylindrical core, 4b ... Disc, 4b '... Insulating disc, 5 ... Return spring, 6 ... Spring receiver, 7 ... Spring storage, 8 ... Stopper, 9, 10 Lead wire, 11 Relay part, 13 Insulating elastic body, 17, 18 Fixed contact, 19, 20
…Lead.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 昭51−90472（ＪＰ，Ｕ) 実開 昭59−21548（ＪＰ，Ｕ) 実公 昭49−7628（ＪＰ，Ｙ１) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa 51-90472 (JP, U) Japanese Utility Model Showa 59-21548 (JP, U) Japanese Utility Model Showa 49-7628 (JP, Y1)
Claims (9)
部をなして、電磁石の励磁により磁気吸着可能に配置さ
れる可動体とを有し、且つ前記電磁石と前記可動体との
磁気吸着面同士を良導電性を有する強磁性体により形成
して、磁気回路の一部となるこれらの磁気吸着面により
電気回路を閉成するための電気接点を構成してなること
を特徴とする電磁スイッチ。1. An electromagnet and a movable body which forms a part of a magnetic circuit together with the electromagnet and is arranged to be magnetically attractable by excitation of the electromagnet, and a magnetic attraction surface between the electromagnet and the movable body. An electromagnetic switch formed of a ferromagnetic material having good conductivity and forming an electric contact for closing an electric circuit by these magnetic attracting surfaces which become a part of a magnetic circuit. .
するコア部付きの可動体とを内装し、このヨーク，コア
部等により、電磁コイル通電時に磁気回路を形成して、
前記可動体が戻しばねの力に抗して前記ヨーク側に磁気
吸着されるよう設定し、 且つ、磁気回路の一部となる前記ヨークと前記可動体と
の磁気吸着面同士を良導電性を有する強磁性体で形成
し、これらの磁気吸着面により電気回路を閉成するため
の電気接点を構成してなることを特徴とする電磁スイッ
チ。An electromagnetic coil and a movable body with a core having magnetism are provided in a fixed yoke, and a magnetic circuit is formed by the yoke and the core when the electromagnetic coil is energized.
The movable body is set to be magnetically attracted to the yoke side against the force of the return spring, and the magnetic attraction surfaces of the yoke and the movable body, which are a part of a magnetic circuit, have good conductivity. An electromagnetic switch formed of a ferromagnetic material having an electric contact for closing an electric circuit by these magnetic attraction surfaces.
電磁コイルの非通電時に前記戻しばねの力で反磁気吸引
側に移動すると、その移動を所定の範囲に規制するスト
ッパに係止するよう設定される電磁スイッチ。3. The stopper according to claim 2, wherein the movable body is locked by a stopper for restricting the movement to a predetermined range when the movable body moves to the demagnetizing side by the force of the return spring when the electromagnetic coil is not energized. An electromagnetic switch that is set to
するコア部付きの可動体とを内装し、このヨーク，コア
部等により、電磁コイル通電時に磁気回路を形成して、
前記可動体を戻しばねの力に抗して前記ヨーク側に磁気
吸着されるよう設定し、 この磁気回路の一部となる前記ヨークと前記可動体との
磁気吸着面同士を良導電性を有する強磁性体で形成し、
これらの磁気吸着面により電気回路を閉成するための電
気接点を構成し、 且つ前記可動体は、電磁コイルの非通電時に前記可動体
が前記戻しばねの力により反磁気吸引側に移動すると、
その移動を所定の範囲で規制するストッパにより係止さ
れる構造とし、 電磁コイル非通電時に当接する前記ストッパと前記可動
体とのそれぞれの係止面にも、前記磁気吸着時の電気接
点と別の電気回路を閉成するための電気接点を配置して
なることを特徴とする電磁スイッチ。An electromagnetic coil and a movable body having a core having magnetism are provided in a fixed yoke, and a magnetic circuit is formed by the yoke and the core when the electromagnetic coil is energized.
The movable body is set to be magnetically attracted to the yoke side against the force of the return spring, and the magnetic attraction surfaces of the yoke and the movable body, which are a part of the magnetic circuit, have good conductivity. Formed of ferromagnetic material,
These magnetic attracting surfaces constitute electrical contacts for closing an electric circuit, and the movable body moves to the anti-magnetic attraction side by the force of the return spring when the electromagnetic coil is de-energized.
A structure is provided in which the movement is locked by a stopper that regulates the movement within a predetermined range. The locking surfaces of the stopper and the movable body that come into contact with each other when the electromagnetic coil is not energized are also provided separately from the electrical contacts at the time of magnetic attraction. An electromagnetic switch characterized by arranging an electric contact for closing the electric circuit.
可動体は、磁性を有する円柱コア部と、該円柱コア部の
頭部に一体成形される円板部とよりなり、 前記円柱コア部を前記電磁コイルのボビンの軸孔に挿入
すると共に、該ボビン軸孔には、前記可動体の戻しばね
を嵌装して、この戻しばねがボビン軸孔外部にある前記
円板部にばね力が作用する構造として、電磁コイル通電
時の前記可動体の磁気吸引時には、前記円板部が前記ヨ
ークの一端面に磁気吸着し、電磁コイル非通電時には、
前気戻しばねの力で前記可動体が反磁気吸引側に移動し
て、前記円板部がストッパに係止するよう設定され、 この円板部に前記ヨークに対応する可動接点を、良導電
性を有する強磁性体を用いて形成してなる電磁スイッ
チ。5. The column according to claim 2, wherein the movable body comprises a cylindrical core having magnetism, and a disk formed integrally with a head of the cylindrical core. The core portion is inserted into the shaft hole of the bobbin of the electromagnetic coil, and a return spring of the movable body is fitted in the bobbin shaft hole, and the return spring is attached to the disk portion outside the bobbin shaft hole. As a structure in which a spring force is applied, at the time of magnetic attraction of the movable body when the electromagnetic coil is energized, the disk portion magnetically attracts to one end surface of the yoke, and when the electromagnetic coil is not energized,
The movable body is moved to the anti-magnetic attraction side by the force of the front air return spring, and the disc portion is set to be locked by the stopper. The movable contact corresponding to the yoke is connected to the disc portion by good conductivity. An electromagnetic switch formed using a ferromagnetic material having properties.
を有する円柱コア部と、該円柱コア部の頭部に一体成形
される円板部とよりなり、 前記円柱コア部を前記電磁コイルのボビンの軸孔に挿入
すると共に、該ボビン軸孔には、前記可動体の戻しばね
を嵌装して、この戻しばねがボビン軸孔外部にある前記
円板部にばね力が作用する構造として、電磁コイル通電
時の前記可動体の磁気吸引時には、前記円板部が前記ヨ
ークの一端面に形成した固定接点部に磁気吸着し、電磁
コイル非通電時には、前記戻しばねの力で前記可動体が
反磁気吸引側に移動して、前記円板部がストッパ側に設
けた固定接点部に係止するよう設定され、 この円板部の表裏面に、前記ヨークの固定接点に対応の
可動接点と、前記ストッパの固定接点部に対応の可動接
点とを配設し、このうち少なくとも前記ヨークの固定接
点に対応の可動接点を良導電性，強磁性材質とする電磁
スイッチ。6. The movable body according to claim 4, wherein the movable body comprises a cylindrical core having magnetism, and a disk formed integrally with a head of the cylindrical core. The coil is inserted into the bobbin shaft hole, and a return spring of the movable body is fitted into the bobbin shaft hole, and the return spring acts on the disk portion outside the bobbin shaft hole. As a structure, at the time of magnetic attraction of the movable body when the electromagnetic coil is energized, the disk portion magnetically attracts to a fixed contact portion formed on one end surface of the yoke, and when the electromagnetic coil is de-energized, the force of the return spring is used. The movable body is moved to the anti-magnetic attraction side, and the disc portion is set so as to be engaged with the fixed contact portion provided on the stopper side. The front and back surfaces of the disc portion correspond to the fixed contacts of the yoke. Movable contact and movable contact corresponding to the fixed contact part of the stopper It was disposed, electromagnetic switch for a movable contact corresponding to a fixed contact of these at least the yoke highly conductive, and ferromagnetic material.
項において、前記ヨーク及び可動体には、電気回路のリ
ード線が接続される電磁スイッチ。7. One of the second to sixth aspects of the present invention.
3. The electromagnetic switch according to claim 1, wherein a lead of an electric circuit is connected to the yoke and the movable body.
項において、前記ヨークは円筒形を呈して、その開口部
側の一端に前記可動体側の可動接点を磁気吸着するため
の磁気吸着面が形成され、 且つ、このヨークの開口内周縁には、良導電性，強磁性
を有する円環状の固定接点を該ヨークと一体となるよ
う、電磁気絶縁性の弾性体を介して係合配置して、前記
可動体側の可動接点が、電磁吸引時に前記ヨークの磁気
吸着面と前記円環状固定接点にまたがって磁気吸着され
る構造とし、 前記ヨーク及び円環状の固定接点に、電気回路のリード
線を接続してなる電磁スイッチ。8. One of the second to sixth aspects of the present invention.
In the above item, the yoke has a cylindrical shape, and a magnetic attraction surface for magnetically attracting the movable contact at the movable body side is formed at one end on an opening side thereof. An annular fixed contact having conductivity and ferromagnetism is engaged and disposed via an electromagnetically insulating elastic body so as to be integrated with the yoke, and the movable contact on the movable body side is fixed to the yoke during electromagnetic attraction. An electromagnetic switch having a structure that is magnetically attracted across a magnetic attraction surface and the annular fixed contact, and wherein a lead wire of an electric circuit is connected to the yoke and the annular fixed contact.
項において、磁気回路の一部となる前記電磁石或いは前
記ヨークと前記可動体との磁気吸着面とを、強磁性，良
導電性及び高耐食性を有する鋼材で構成し、磁気回路形
成要素の残りの部分は、汎用の磁性鋼で構成してなる電
磁スイッチ。9. The method according to claim 1, wherein:
In the paragraph, the magnetic attraction surface of the electromagnet or the yoke and the movable body that is a part of a magnetic circuit is made of a steel material having ferromagnetism, good conductivity, and high corrosion resistance, and the remaining magnetic circuit forming element is formed. The part is an electromagnetic switch composed of general-purpose magnetic steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19623089A JP2710669B2 (en) | 1989-07-28 | 1989-07-28 | Electromagnetic switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19623089A JP2710669B2 (en) | 1989-07-28 | 1989-07-28 | Electromagnetic switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0362430A JPH0362430A (en) | 1991-03-18 |
| JP2710669B2 true JP2710669B2 (en) | 1998-02-10 |
Family
ID=16354365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19623089A Expired - Lifetime JP2710669B2 (en) | 1989-07-28 | 1989-07-28 | Electromagnetic switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2710669B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10406906B2 (en) | 2017-07-15 | 2019-09-10 | Hyundai Motor Company | Engine mount |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0590475B1 (en) * | 1992-09-28 | 1998-02-11 | Mitsubishi Denki Kabushiki Kaisha | Circuit breaker |
-
1989
- 1989-07-28 JP JP19623089A patent/JP2710669B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10406906B2 (en) | 2017-07-15 | 2019-09-10 | Hyundai Motor Company | Engine mount |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0362430A (en) | 1991-03-18 |
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