JPH06223669A - Switch - Google Patents

Abstract

PURPOSE:To enhance the interruption performance of a switch and to prolong the life of the switch by improving the drive of an arc. CONSTITUTION:Arc runners 8B, 12 opposite to a moving contact 8 and/or the back of a moving contact 6 are provided with a projecting portion 15A, a recessed portion 15B or a hole 15C to help interrupting an arc which is generated between a fixed contact 8 and the moving contact 7 and shifts to the back of the moving contact 6. The arc runners 8B, 12 are provided both of which first extend toward the moving contact 6 and then extend toward the opposite side of the moving contact 6, and a metallic arc-extinguishing plate 13 is provided having a U-shaped protrusion 13A which is parallel to the direction in which the fixed contact 8A and the moving contact 6A move close to and away from each other.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】この発明は、電磁接触器、電磁開
閉器や配線用遮断器などの電流の開閉を行う開閉器、特
にそのアークの消弧機能を有する開閉器に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch for opening and closing a current such as an electromagnetic contactor, an electromagnetic switch and a circuit breaker for wiring, and more particularly to a switch having an arc extinguishing function.

【０００２】[0002]

【従来の技術】図４４は例えば実開昭５７−９０５１７
号公報に示された従来の開閉器を示し、図において、１
はプラスチックで形成された取付台、２はケイ素鋼板を
積層した固定鉄心、３は固定鉄心２と同じくケイ素鋼板
を積層した可動鉄心である。2. Description of the Related Art FIG. 44 shows, for example, Japanese Utility Model Laid-Open No. 57-90517.
1 shows a conventional switch shown in Japanese Patent Publication No.
Is a mounting base made of plastic, 2 is a fixed iron core laminated with silicon steel plates, and 3 is a movable iron core laminated with silicon steel plates like the fixed iron core 2.

【０００３】また、４は可動鉄心３と固定鉄心２とを引
き外しばね（図示せず）に逆らって吸着させる駆動力を
与える操作コイル、５はプラスチックで形成され、角窓
を有するクロスバーで、その下端では可動鉄心３を保持
している。６はクロスバー５の角窓に挿入保持されてい
る可動接触子である。Reference numeral 4 denotes an operating coil for applying a driving force for pulling the movable iron core 3 and the fixed iron core 2 against each other and adsorbing them against a spring (not shown). Reference numeral 5 is a crossbar formed of plastic and having a square window. The movable core 3 is held at its lower end. Reference numeral 6 denotes a movable contactor inserted and held in the square window of the crossbar 5.

【０００４】さらに、７は可動接触子６を押圧する押し
ばね、８は可動接触子６と対向して設けられ、電流の通
電，遮断を行う固定接触子、９は電磁接触器本体を外部
回路と接続するための端子ねじ、１０は固定接触子８を
取り付けるベースである。Further, 7 is a pressing spring for pressing the movable contact 6, 6 is a fixed contact which is provided so as to face the movable contact 6, and which conducts and cuts off the electric current, 9 is an electromagnetic contactor body which is an external circuit. A terminal screw 10 for connecting with the fixed contact 8 is a base to which the fixed contact 8 is attached.

【０００５】また、１１は電磁接触器の上面を覆うカバ
ー、１２はべース１０に固定され、可動接触子６と固定
接触子８とを取り囲んでいるアークランナーであり、そ
の一部１２ａはその可動接触子６の上面を覆う部分であ
る。Further, 11 is a cover for covering the upper surface of the electromagnetic contactor, 12 is an arc runner fixed to the base 10 and surrounding the movable contact 6 and the fixed contact 8, and a part 12a thereof. This is a portion that covers the upper surface of the movable contactor 6.

【０００６】次に動作について説明する。操作コイル４
を消磁すると、図示されない上記引き外しばねにより、
可動鉄心３が固定鉄心２より開離し、クロスバー５も、
図４４に示す状態になるため、可動接触子６と固定接触
子８との間隔が開く、このとき、電流の遮断が行われ、
アークａ〜ｆがａ→ｂ→ｃ，ｄ→ｅ，ｆのように発生
し、かつ駆動されて、遮断に至る。Next, the operation will be described. Operating coil 4
When demagnetized, the trip spring (not shown)
The movable iron core 3 is separated from the fixed iron core 2, and the crossbar 5 is also
Because of the state shown in FIG. 44, the gap between the movable contact 6 and the fixed contact 8 is opened, and at this time, the current is cut off,
The arcs a to f are generated and driven as a->b-> c, d-> e, f, and are cut off.

【０００７】図４５は例えば特公平２−６１７０号公報
に示された従来の開閉器を示し、ここでは可動接触子６
と固定接触子８の片側周辺の消弧機構のみを示してあ
る。図において、６Ａは可動接触子６に取り付けられた
可動接点、８Ａは固定接触子８に取り付けられた、可動
接点６Ａと接離可能な固定接点、８Ｂは固定接触子８に
設けられ、固定接点８Ａ近傍から可動接触子６側に延
び、その先端から固定接触子８側とは反対側に水平に延
びるアークランナーである。FIG. 45 shows a conventional switch disclosed in, for example, Japanese Patent Publication No. 2-6170, in which the movable contactor 6 is used.
Only the arc extinguishing mechanism around one side of the fixed contactor 8 is shown. In the figure, 6A is a movable contact attached to the movable contact 6, 8A is a fixed contact attached to the fixed contact 8, which can be brought into contact with and separated from the movable contact 6A, 8B is provided on the fixed contact 8, and is a fixed contact. 8A is an arc runner that extends from the vicinity of 8A to the movable contact 6 side and horizontally extends from its tip to the side opposite to the fixed contact 8 side.

【０００８】次に動作について説明する。まず、図４４
に示したものと同様の操作コイル４を消磁すると、引き
外しばねにより可動鉄心３が固定鉄心２より開離し、ク
ロスバー５が、図４３に示した場合と同様の状態にな
り、図４５のように、可動接触子６と固定接触子８との
間が開く。このとき、電流の遮断が行われ、アークａ，
ｂ，ｃはａ→ｂ→ｃのように発生し、かつ駆動されて、
遮断に至る。Next, the operation will be described. First, FIG.
When the operating coil 4 similar to the one shown in FIG. 4 is demagnetized, the movable iron core 3 is separated from the fixed iron core 2 by the tripping spring, and the crossbar 5 is brought into the same state as that shown in FIG. Thus, the space between the movable contact 6 and the fixed contact 8 is opened. At this time, the current is cut off and the arc a,
b and c are generated and driven as a → b → c,
Leads to interruption.

【０００９】図４６は例えば特公平２−３０１３０号公
報に示された従来の開閉器を示し、ここでは可動接触子
６と固定接触子８の周辺の消弧機構のみを示してある。
図において、６Ａは可動接触子６に取り付けられた可動
接点、８Ａは固定接触子８に取り付けられた、可動接点
６Ａと接離可能な固定接点、１３は可動接点６Ａと固定
接点８Ａの開離空間に対向突設されたコの字状突起１３
Ａを有する金属消弧板である。FIG. 46 shows a conventional switch disclosed in Japanese Patent Publication No. 2-30130, for example, in which only the arc extinguishing mechanism around the movable contact 6 and the fixed contact 8 is shown.
In the figure, 6A is a movable contact attached to the movable contactor 6, 8A is a fixed contact attached to the fixed contactor 8 that can be contacted with and separated from the movable contact 6A, and 13 is a separation of the movable contact 6A and the fixed contact 8A. U-shaped protrusion 13 that is provided so as to face the space
It is a metal arc-quenching plate having A.

【００１０】次に動作について説明する。まず、操作コ
イル４を消磁すると、引き外しばねにより可動鉄心３が
固定鉄心２より開離し、クロスバー５が図４３に示した
場合と同様の状態になり、図４６のように、可動接触子
６と固定接触子８との間が開く。このとき、電流の遮断
が行われ、アークａ，ｂ，ｃはａ→ｂ，ｃ→ｄ，ｅのよ
うに発生し、かつ駆動されて、遮断に至る。Next, the operation will be described. First, when the operating coil 4 is demagnetized, the tripping spring separates the movable iron core 3 from the fixed iron core 2, and the crossbar 5 is in the same state as that shown in FIG. 43. As shown in FIG. 6 and the fixed contact 8 are opened. At this time, the current is cut off, and the arcs a, b, and c are generated and driven as a → b, c → d, and e to be cut off.

【００１１】[0011]

【発明が解決しようとする課題】従来の開閉器は以上の
ように構成されているので、図４４に示す従来例では、
可動接触子６の先端とアークランナー１２との間にアー
クｆが駆動され、消弧するまで停滞する。このため、可
動接触子６の背面にアークが移行せず、可動接触子６の
先端のアーク発弧点が急速に損傷し、開閉器本体の寿命
を短くしてしまうほか、局所的な加熱により可動接点６
Ａの剥離がおこるなどの問題点があった。Since the conventional switch is constructed as described above, in the conventional example shown in FIG.
The arc f is driven between the tip of the movable contact 6 and the arc runner 12, and remains until the arc is extinguished. For this reason, the arc does not transfer to the back surface of the movable contact 6, and the arc ignition point at the tip of the movable contact 6 is rapidly damaged, which shortens the life of the switch body and also causes local heating. Moving contact 6
There was a problem such as peeling of A.

【００１２】また、図４５の従来例では、可動接触子６
の先端とアークランナー８Ｂとの間にアークＣが一つだ
け発生するため、アーク電圧が低いことと、アークラン
ナー８Ｂ側のアークの足が接点６Ａ，８Ａの接離空間か
ら遠ざかる方向へ駆動されるだけで、可動接触子６の先
端からアークＣの足は動かないため遮断特性が劣るなど
の問題点があった。Further, in the conventional example of FIG. 45, the movable contact 6
Since only one arc C is generated between the tip of the arc and the arc runner 8B, the arc voltage is low, and the foot of the arc on the arc runner 8B side is driven in the direction away from the contact / separation space of the contacts 6A, 8A. However, since the foot of the arc C does not move from the tip of the movable contact 6, the breaking characteristic is inferior.

【００１３】さらに、電流零点において、電流は遮断さ
れるが、可動接触子６とアークランナー８Ｂ間にホット
ガスや金属蒸気等が存在し、可動接触子６とアークラン
ナー８Ｂ間で再点弧が起り、遮断が失敗するなどの問題
点があった。Further, at the current zero point, the current is cut off, but hot gas, metal vapor, or the like exists between the movable contact 6 and the arc runner 8B, and re-ignition occurs between the movable contact 6 and the arc runner 8B. There was a problem that it happened and the cutoff failed.

【００１４】また、図４６の従来例では、固定接触子８
と金属消弧板１３との間に駆動されたアークｅは、固定
接触子８と金属消弧板１３とに流れる電流によって発生
される磁場により、消弧するまで停滞する。このため、
固定接触子８と金属消弧板１３とを損傷し、かつ遮断性
能が劣るなどの問題点があった。Further, in the conventional example of FIG. 46, the fixed contact 8
The arc e driven between the metal arc extinguishing plate 13 and the metal arc extinguishing plate 13 is stagnant until it is extinguished by the magnetic field generated by the current flowing through the fixed contact 8 and the metal arc extinguishing plate 13. For this reason,
There are problems that the fixed contactor 8 and the metal arc-extinguishing plate 13 are damaged and the breaking performance is poor.

【００１５】さらに、可動接触子６の先端と金属消弧板
１３との間に駆動されたアークｄも消弧するまで停滞す
る。このため、可動接触子６の先端の局所的な発熱によ
り、図４４の従来例と同様に、可動接点６Ａの剥離が起
こるなどの問題点があった。Further, the arc d driven between the tip of the movable contactor 6 and the metal arc-extinguishing plate 13 also stagnates until it is extinguished. Therefore, there is a problem that the movable contact 6A is peeled off due to local heat generation at the tip of the movable contactor 6 as in the conventional example of FIG.

【００１６】請求項１の発明は上記のような問題点を解
消するためになされたもので、アークの駆動を改善し、
開閉器本体の寿命を長くするとともに、遮断性能のよい
開閉器を得ることを目的とする。The invention of claim 1 is made to solve the above problems, and improves the driving of the arc.
The purpose is to prolong the life of the switch body and to obtain a switch with good breaking performance.

【００１７】請求項２の発明は発生磁場によりアークの
駆動を促進でき、かつ再点弧を抑えることができる開閉
器を得ることを目的とする。It is an object of the present invention to provide a switch which can accelerate the driving of the arc by the generated magnetic field and can suppress re-ignition.

【００１８】[0018]

【課題を解決するための手段】請求項１の発明に係る開
閉器は、可動接触子または／および可動接触子の背面に
対向するアークランナーに固定接点および可動接点間で
発生し、かつ上記可動接触子の背面へ移行したアークの
遮断を促進する凸部，凹部または孔を設けたものであ
る。A switch according to the invention of claim 1 is generated between a fixed contact and a movable contact in an arc runner facing a back surface of the movable contact or / and the movable contact, and is movable. It is provided with a convex portion, a concave portion, or a hole that promotes interruption of the arc transferred to the back surface of the contact.

【００１９】請求項２の発明に係る開閉器は、固定接触
子に固定接点近傍から可動接触子側に延び、さらに途中
から可動接触子側とは反対方向に延びるようにアークラ
ンナーを設け、固定接点および可動接点の接離方向に並
行して配設され、かつ上記固定接触子との近接部位の上
記接離空間にコの字状突起を有する金属消弧板を対向突
設したものである。In the switch according to the second aspect of the present invention, the fixed contact is provided with an arc runner so as to extend from the vicinity of the fixed contact to the movable contact side, and further to extend in the opposite direction from the movable contact side. A metal arc-extinguishing plate, which is arranged in parallel with the contact and separation direction of the contact and the movable contact, and has a U-shaped projection in the contact and separation space in the vicinity of the fixed contact. .

【００２０】[0020]

【作用】請求項１の発明における開閉器は、可動接触子
とアークランナーの一方に設けた凸部，凹部または孔を
用いることにより、可動接触子の背面にアークを移行さ
せた後、確実に消弧を行わせる。In the switch according to the invention of claim 1, by using the convex portion, the concave portion or the hole provided on one of the movable contactor and the arc runner, the arc is surely transferred to the back surface of the movable contactor. Extinguish the arc.

【００２１】また、請求項２の発明における開閉器は、
アークを可動接触子と金属消弧板との間、および金属消
弧板と固定接触子のアークランナーとの間に移行させ
て、金属消弧板と固定接触子のアークランナーとに流れ
る電流が作る磁場によって、その間に移行されたアーク
を固定接点および可動接点の接離空間から遠ざかる方向
に駆動する。The switch according to the invention of claim 2 is
By moving the arc between the movable contactor and the metal arc extinguishing plate, and between the metal arc extinguishing plate and the arc runner of the fixed contact, the current flowing through the metal arc extinguishing plate and the arc runner of the fixed contact is The generated magnetic field drives the arc transferred during that time in a direction away from the contact and separation space of the fixed contact and the movable contact.

【００２２】[0022]

【実施例】【Example】

実施例１．以下、この請求項１の発明の実施例を図につ
いて説明する。ここでは開閉器としての電磁接触器の片
側の消弧機構を中心に述べる。図１において、６は可動
接触子、６Ａは可動接触子６に取り付けられた可動接
点、８はＵ字状に折り返された固定接触子、８Ａは固定
接触子８に取り付けられて、可動接点６Ａと接離可能な
固定接点である。Example 1. An embodiment of the invention of claim 1 will be described below with reference to the drawings. Here, the arc extinguishing mechanism on one side of the electromagnetic contactor as the switch will be mainly described. In FIG. 1, 6 is a movable contact, 6A is a movable contact attached to the movable contact 6, 8 is a fixed contact folded back in a U shape, 8A is attached to the fixed contact 8, and the movable contact 6A It is a fixed contact that can be contacted and separated from.

【００２３】また、１２は可動接触子６における可動接
点６Ａ取付部の背面近傍および可動接触子６，固定接触
子８の各端面に臨むように設けられたＬ字状のアークラ
ンナー、１５Ａはアークを移行しやすいように、可動接
触子６の可動接点６Ａ取付面とは反対の背面に設けられ
た凸部である。Further, 12 is an L-shaped arc runner provided so as to face the vicinity of the rear surface of the movable contact 6A mounting portion of the movable contact 6 and the respective end surfaces of the movable contact 6 and the fixed contact 8, and 15A is an arc. Is a convex portion provided on the back surface of the movable contactor 6 opposite to the mounting surface of the movable contact 6A so as to facilitate the transfer.

【００２４】次に動作について説明する。まず、従来例
と同様に、操作コイル４を消磁すると、引き外しばねに
より可動鉄心３が固定鉄心２より開離し、クロスバー５
が、図４４に示す状態になるため、可動接触子６と固定
接触子８との間が開く。このとき、電流の遮断が行わ
れ、アークａ〜ｇはそれぞれａ→ｂ→ｃ，ｄ→ｅ，ｆ、
そしてｆ→ｇのように発生し、かつ駆動されて、遮断に
至る。Next, the operation will be described. First, similarly to the conventional example, when the operation coil 4 is demagnetized, the movable iron core 3 is separated from the fixed iron core 2 by the tripping spring, and the crossbar 5
However, because of the state shown in FIG. 44, the gap between the movable contact 6 and the fixed contact 8 is opened. At this time, the current is cut off, and the arcs a to g are a → b → c, d → e, f,
Then, as in the case of f → g, it is generated and driven, and it is cut off.

【００２５】ところで、図４４の従来例では、アークｆ
が停滞すると、可動接触子６の先端部の局所的加熱（可
動接点６Ａを片側から加熱する）により、可動接触子６
の消耗と損傷が起るとともに、可動接点６Ａの剥離が起
き易く、遮断性能も衰える。By the way, in the conventional example shown in FIG.
When the moving contact 6 is stagnant, the movable contact 6 is locally heated (heating the moving contact 6A from one side) at the tip of the moving contact 6
Is consumed and damaged, the movable contact 6A is easily peeled off, and the breaking performance is deteriorated.

【００２６】しかし、可動接触子６の可動接点６Ａ上に
凸部１５Ａを設けて、アークｆをアークｇに移行しやす
くすることにより、可動接点６Ａを片寄りなく、全体的
に加熱でき、剥離を防止でき、遮断性能も向上する。However, by providing the convex portion 15A on the movable contact 6A of the movable contactor 6 so that the arc f can be easily transferred to the arc g, the movable contact 6A can be heated as a whole without deviation and peeled. Can be prevented, and the blocking performance is also improved.

【００２７】また、その剥離は冷却の際に起こるが、一
様に加熱された後冷却されるため剥離は起らない。ま
た、可動接触子６の背面を利用してアークの遮断を行っ
ているため、可動接触子６の寿命が向上する。したがつ
て、開閉器本体の寿命も向上する。Further, although the peeling occurs during cooling, the peeling does not occur because it is uniformly heated and then cooled. Further, since the arc is cut off by using the back surface of the movable contact 6, the life of the movable contact 6 is improved. Therefore, the life of the switch body is extended.

【００２８】実施例２．図３はこの請求項１の発明の他
の実施例を示す消弧機構の斜視図であり、同図におい
て、６は可動接触子、６Ａは可動接触子６に取り付けら
れた可動接点、８はＵ字状に折り返された固定接触子、
８Ａは固定接触子８に取り付けられて、可動接点６Ａと
接離可能な固定接点である。Example 2. FIG. 3 is a perspective view of an arc extinguishing mechanism showing another embodiment of the invention of claim 1, in which 6 is a movable contact, 6A is a movable contact attached to the movable contact 6, and 8 is a movable contact. Fixed contactor folded back in a U shape,
Reference numeral 8A is a fixed contact that is attached to the fixed contactor 8 and can be brought into contact with and separated from the movable contact 6A.

【００２９】また、１２は可動接触子６における可動接
点６Ａ取付部の背面近傍および可動接触子６，固定接触
子８の各端面に臨むように設けられたＬ字状のアークラ
ンナー、１５Ａはアークを移行しやすいように設けられ
た凸部であり、アークを可動接触子６の背面に移行し易
いように設けた凸部１５Ａは、可動接点６Ａが取り付け
られた位置から外れた可動接触子６の背面に設けられて
いる。Further, 12 is an L-shaped arc runner provided so as to face the vicinity of the rear surface of the movable contact 6A mounting portion of the movable contact 6 and each end face of the movable contact 6 and the fixed contact 8, and 15A is an arc. Is a convex portion provided so as to easily move the arc, and the convex portion 15A provided so as to easily move the arc to the back surface of the movable contact 6 has a movable contact 6 which is out of the position where the movable contact 6A is attached. It is provided on the back of.

【００３０】次に動作について説明する。この実施例に
おいても、操作コイル４を消磁すると、引き外しばねに
より可動鉄心３が固定鉄心２より開離し、クロスバー５
が、図４４に示す状態になるため、可動接触子６と固定
接触子８との間が開く。このとき、電流の遮断が行わ
れ、アークａ〜ｆがａ→ｂ→ｃ，ｄ→ｅ，ｆ、そしてｆ
→ｇのように発生し、駆動されて、遮断に至る。Next, the operation will be described. Also in this embodiment, when the operating coil 4 is demagnetized, the movable iron core 3 is separated from the fixed iron core 2 by the tripping spring, and the crossbar 5 is released.
However, because of the state shown in FIG. 44, the gap between the movable contact 6 and the fixed contact 8 is opened. At this time, the current is cut off so that the arcs a to f are a → b → c, d → e, f, and f
→ It is generated like g and is driven to cut off.

【００３１】この場合において、アークｇによって凸部
１５Ａが加熱されるが、その熱は可動接触子６の可動接
点６Ａ側とその反対側へ伝わる、従って、可動接触子６
先端にアークｆが発生する場合よりも、可動接点６Ａの
剥離は起りにくい。また、可動接触子６の背面を利用し
てアークｇの遮断を行っているため、可動接触子６の寿
命が向上する。従って、開閉器本体の寿命が向上する。In this case, the convex portion 15A is heated by the arc g, but the heat is transmitted to the movable contact 6A side of the movable contact 6 and the opposite side thereof, and therefore the movable contact 6
Peeling of the movable contact 6A is less likely to occur than when the arc f is generated at the tip. Further, since the arc g is blocked by using the back surface of the movable contact 6, the life of the movable contact 6 is improved. Therefore, the life of the switch body is improved.

【００３２】実施例３．図４はこの請求項１の発明の他
の実施例を示す消弧機構の側面図であり、同図におい
て、６は可動接触子、６Ａは可動接触子６に取り付けら
れた可動接点、８はＵ字状に折り返された固定接触子、
８Ａは固定接触子８に取り付けられて、可動接点６Ａと
接離可能な固定接点である。Example 3. FIG. 4 is a side view of an arc extinguishing mechanism showing another embodiment of the invention of claim 1, in which 6 is a movable contact, 6A is a movable contact attached to the movable contact 6, and 8 is a movable contact. Fixed contactor folded back in a U shape,
Reference numeral 8A is a fixed contact that is attached to the fixed contactor 8 and can be brought into contact with and separated from the movable contact 6A.

【００３３】また、１２は可動接点６Ａの取付部６Ａの
取付部背面近傍および可動接触子６，固定接触子８の各
端面に臨むように設けられたＬ字状のアークランナー、
１５Ａはアークを移行しやすいように、可動接点６Ａの
開離軸におけるアークランナー１２上に設けられた凸部
である。Reference numeral 12 is an L-shaped arc runner provided so as to face the vicinity of the rear surface of the mounting portion 6A of the movable contact 6A and the end surfaces of the movable contact 6 and the fixed contact 8.
Reference numeral 15A denotes a convex portion provided on the arc runner 12 at the opening axis of the movable contact 6A so that the arc can be easily transferred.

【００３４】次に動作について説明する。まず、操作コ
イル４を消磁すると、引き外しばねにより可動鉄心３が
固定鉄心２より開離し、クロスバー５が、図４４に示す
状態になるため、可動接触子６と固定接触子８との間が
開く。このとき、電流の遮断が行われ、アークａ〜ｆが
ａ→ｂ→ｃ，ｄ→ｅ，ｆ、そしてｆ→ｇのように発生
し、駆動されて、遮断に至る。Next, the operation will be described. First, when the operation coil 4 is demagnetized, the tripping spring separates the movable iron core 3 from the fixed iron core 2 and the crossbar 5 enters the state shown in FIG. 44, so that the movable contactor 6 and the fixed contactor 8 are separated from each other. Opens. At this time, the current is cut off, and the arcs a to f are generated as a → b → c, d → e, f, and f → g, and are driven to cut off.

【００３５】なお、図４４の従来例では、アークはｆで
停滞し可動接触子６の先端部の局所的加熱（可動接点６
Ａを片側から加熱する）により、可動接触子６の消耗と
損傷が起こるとともに、可動接点６Ａの剥離が起き易
く、遮断性能も衰える。In the conventional example shown in FIG. 44, the arc stays at f, and the tip portion of the movable contact 6 is locally heated (the movable contact 6
By heating A from one side), the movable contact 6 is consumed and damaged, the movable contact 6A is easily peeled off, and the breaking performance is deteriorated.

【００３６】しかし、可動接点６Ａの開離軸上のアーク
ランナー１２に凸部１５Ａを設け、アークｆをアークｇ
に移行しやすくすることにより、可動接点６Ａを背面か
ら片寄りなく全体的に加熱でき、剥離防止が可能とな
り、遮断性能も向上する。剥離は冷却の際に起こるが、
一様に加熱された後冷却されれば剥離は起らない。ま
た、可動接触子６の背面を利用してアークの遮断を行っ
ているため、可動接触子６の寿命が向上する。従って、
開閉器本体の寿命も向上する。However, a convex portion 15A is provided on the arc runner 12 on the opening / closing axis of the movable contact 6A, and the arc f is changed to the arc g.
By making it easier to move to, it is possible to heat the movable contact 6A as a whole from the back side without deviation, it becomes possible to prevent peeling, and the breaking performance is also improved. Peeling occurs during cooling,
Peeling does not occur if uniformly heated and then cooled. Further, since the arc is cut off by using the back surface of the movable contact 6, the life of the movable contact 6 is improved. Therefore,
The life of the switch body is also improved.

【００３７】実施例４．図５はこの請求項１の発明の他
の実施例を示す消弧機構の側面図であり、同図におい
て、６は可動接触子、６Ａは可動接触子６に取り付けら
れた可動接点、８はＵ字状に折り返された固定接触子、
８Ａは固定接触子８に取り付けられて、可動接点６Ａと
接離可能な固定接点である。Example 4. FIG. 5 is a side view of an arc extinguishing mechanism showing another embodiment of the invention of claim 1, in which 6 is a movable contact, 6A is a movable contact attached to the movable contact 6, and 8 is a movable contact. Fixed contactor folded back in a U shape,
Reference numeral 8A is a fixed contact that is attached to the fixed contactor 8 and can be brought into contact with and separated from the movable contact 6A.

【００３８】また、１２は可動接触子６における可動接
点６Ａ取付部の背面近傍および可動接触子６，固定接触
子８の各端面に臨むように設けられたＬ字状のアークラ
ンナー、１５Ａは可動接触子６の背面に面するアークラ
ンナー１２の面にアークを移行しやすいように設けられ
た凸部であり、アークｆを可動接触子６の背面に移行し
易いように設けた凸部１５Ａは、可動接点６Ａの開離軸
上からはずれたところに設けられている。Further, 12 is an L-shaped arc runner provided so as to face the vicinity of the rear surface of the movable contact 6A mounting portion of the movable contact 6 and each end face of the movable contact 6 and the fixed contact 8, and 15A is movable. The convex portion 15A is provided on the surface of the arc runner 12 facing the back surface of the contactor 6 so as to easily transfer the arc, and the convex portion 15A provided so as to easily transfer the arc f to the back surface of the movable contactor 6. The movable contact 6A is provided at a position off the opening / closing axis.

【００３９】次に動作について説明する。この実施例で
は操作コイル４を消磁すると、引き外しばねにより可動
鉄心３が固定鉄心２より開離し、クロスバー５が図４４
に示す状態になるため、可動接触子６と固定接触子８と
の間が開く。このとき、電流の遮断が行われ、アークａ
〜ｇがａ→ｂ→ｃ，ｄ→ｅ，ｆ、そしてｆ→ｇのように
発生し、駆動されて、遮断に至る。Next, the operation will be described. In this embodiment, when the operating coil 4 is demagnetized, the tripping spring causes the movable iron core 3 to separate from the fixed iron core 2, and the crossbar 5 is moved to the position shown in FIG.
Because of the state shown in FIG. 5, the space between the movable contact 6 and the fixed contact 8 is opened. At this time, the current is cut off and the arc a
~ G occurs like a->b-> c, d-> e, f, and f-> g, is driven, and is cut off.

【００４０】また、アークによって可動接触子６の背面
が加熱されるが、その熱は可動接触子６の可動接点６Ａ
側とその反対側へ伝わる、そのため可動接触子６先端に
アークｆが発生する場合よりも、可動接点６Ａの剥離は
起こりにくくなる。また、可動接触子６の背面を利用し
て、アークの遮断を行っているため、可動接触子６の寿
命が向上する。従って、開閉器本体の寿命も向上する。The back surface of the movable contact 6 is heated by the arc, and the heat is generated by the movable contact 6A of the movable contact 6.
Of the movable contact 6A is less likely to occur than when the arc f is generated at the tip of the movable contact 6. Further, since the arc is interrupted by using the back surface of the movable contact 6, the life of the movable contact 6 is improved. Therefore, the life of the switch body is also improved.

【００４１】実施例５．図６はこの請求項１の発明の他
の実施例を示す消弧機構の側面図であり、図７はその斜
視図である。これは図１の凸部１５Ａに代えて凹部１５
Ｂを設けたものであり、図４４の実施例と同様の効果が
ある。また、凸部１５Ａに代えて貫通孔としても実施例
１と同様の効果がある。そのうえ貫通孔を設けたこと
で、ホットガスが孔を通るとともに、ガスの流動があ
り、アークが転移し易くなる。Example 5. FIG. 6 is a side view of an arc extinguishing mechanism showing another embodiment of the invention of claim 1, and FIG. 7 is a perspective view thereof. This is the concave portion 15 instead of the convex portion 15A of FIG.
B is provided, and the same effect as the embodiment of FIG. 44 is obtained. Further, the same effect as that of the first embodiment can be obtained by using the through hole instead of the convex portion 15A. In addition, by providing the through hole, the hot gas passes through the hole, the gas flows, and the arc is easily transferred.

【００４２】実施例６．図８は請求項１の発明の他の実
施例を示す電磁接触器の片側の消弧機構の斜視図であ
り、実施例２の凸部に代えて孔１５Ｃを設けたもので実
施例２と同様の効果を奏する。そのうえ孔１５Ｃを設け
たことで、ホットガスが孔１５Ｃを通るとともに、ガス
の流動があり、アークは転移し易くなる。また、凸部１
５Ａを凹部１５Ｂとしても、実施例２と同様の効果を奏
する。Example 6. FIG. 8 is a perspective view of an arc extinguishing mechanism on one side of an electromagnetic contactor showing another embodiment of the invention of claim 1, in which a hole 15C is provided in place of the convex portion of the second embodiment. Has the same effect. In addition, since the hole 15C is provided, the hot gas passes through the hole 15C, the gas flows, and the arc is easily transferred. Also, the convex portion 1
Even if the recess 5B is formed by 5A, the same effect as that of the second embodiment can be obtained.

【００４３】実施例７．図９は請求項１の発明の他の実
施例を示す電磁接触器の片側の消弧機構の斜視図であ
り、実施例３の凸部１５Ａに代えて孔１５Ｃを設けたも
ので、実施例３と同様の効果を奏する。そのうえ、孔１
５Ｃを設けたことで、ホットガスが孔１５Ｃを通るとと
もにガスの流動があり、アークは転移し易くなる。ま
た、アークランナー１２の凸部１５Ａに代えて、可動接
触子６の背面側に凹部１５Ｂを設けてもよく、実施例３
と同様の効果を奏する。Example 7. FIG. 9 is a perspective view of an arc extinguishing mechanism on one side of an electromagnetic contactor showing another embodiment of the invention of claim 1, in which a hole 15C is provided in place of the convex portion 15A of the third embodiment. The same effect as 3 is achieved. Besides, hole 1
By providing 5C, the hot gas passes through the hole 15C and the gas flows, and the arc easily transfers. Further, instead of the convex portion 15A of the arc runner 12, a concave portion 15B may be provided on the back surface side of the movable contact 6, and the third embodiment
Has the same effect as.

【００４４】実施例８．図１０は請求項１の発明の他の
実施例を示す電磁接触器の片側の消弧機構の斜視図であ
り、これが実施例４の凸部１５Ａに代えて孔１５Ｃを設
けたもので、実施例４と同様の効果を奏する。そのう
え、孔１５Ｃを設けたことで、ホットガスが孔１５Ｃを
通とともに、ガスの流動があり、アークは転移し易くな
る。また、アークランナー１２の凸部１５Ａに代えて可
動接触子６の背面側に凹部１５Ｂを設けてもよく、実施
例４と同様の効果を奏する。Example 8. FIG. 10 is a perspective view of an arc extinguishing mechanism on one side of an electromagnetic contactor showing another embodiment of the invention of claim 1, which is provided with a hole 15C in place of the convex portion 15A of the fourth embodiment. The same effect as in Example 4 is obtained. Moreover, since the hole 15C is provided, the hot gas passes through the hole 15C and the gas flows, so that the arc is easily transferred. Further, instead of the convex portion 15A of the arc runner 12, a concave portion 15B may be provided on the back surface side of the movable contactor 6, and the same effect as that of the fourth embodiment is obtained.

【００４５】実施例９．図１１は請求項１の発明の他の
実施例を示す電磁接触器の片側の消弧機構の側面図であ
り、６は可動接触子、６Ａは可動接触子６に取り付けら
れた可動接点、８はＵ字状に折り返された固定接触子、
８Ａは固定接触子８に取り付けられて、可動接点６Ａと
接離可能な固定接点である。Example 9. FIG. 11 is a side view of an arc extinguishing mechanism on one side of an electromagnetic contactor showing another embodiment of the invention of claim 1, 6 is a movable contactor, 6A is a movable contact point attached to the movable contactor 8, Is a fixed contact that is folded back in a U shape,
Reference numeral 8A is a fixed contact that is attached to the fixed contactor 8 and can be brought into contact with and separated from the movable contact 6A.

【００４６】また、１２は可動接触子６の可動接点６Ａ
取付部の背面近傍および可動接触子６，固定接触子８の
各端面に臨むように設けられたＬ字状のアークランナ
ー、１５Ａはアークが移行し易いように、可動接触子６
の可動接点６Ａ取付部の背面および可動接点６Ａの開離
軸上の可動接触子６に面するアークランナー１２に設け
られた凸部である。Further, 12 is a movable contact 6A of the movable contactor 6.
An L-shaped arc runner provided so as to face the rear surface of the mounting portion and each end surface of the movable contact 6 and the fixed contact 8 is a movable contact 6 for facilitating the transfer of an arc.
Is a convex portion provided on the arc runner 12 facing the back surface of the mounting portion of the movable contact 6A and the movable contact 6 on the opening axis of the movable contact 6A.

【００４７】次に動作について説明する。まず、操作コ
イル４を消磁すると、引き外しばねにより可動鉄心２よ
り開離し、クロスバー５が図４４に示す状態になり、可
動接触子６と固定接触子８との間が開く。このとき、電
流の遮断が行われ、アークａ〜ｇはａ→ｂ→ｃ，ｄ→
ｅ，ｆ、そしてｆ→ｇのようにアークが発生し、駆動さ
れて、遮断に至る。Next, the operation will be described. First, when the operation coil 4 is demagnetized, it is separated from the movable iron core 2 by the tripping spring, the crossbar 5 is brought into the state shown in FIG. 44, and the movable contact 6 and the fixed contact 8 are opened. At this time, the current is cut off, and the arcs a to g are a → b → c and d →
An arc is generated as in e, f, and f → g, and the arc is driven to cut off.

【００４８】図４４の従来例では、アークはｆで停滞
し、可動接触子６の先端部の局所的加熱（可動接点６Ａ
を片側から加熱する）により、可動接触子６の消耗と損
傷が起こるとともに、可動接点６Ａの剥離が起き易く、
遮断性能も衰える。In the conventional example of FIG. 44, the arc stagnates at f, and local heating of the tip portion of the movable contactor 6 (movable contact 6A
Is heated from one side), the movable contact 6 is consumed and damaged, and the movable contact 6A easily peels off.
The blocking performance also declines.

【００４９】しかし、可動接触子６の可動接点６Ａ取付
面の背面に凸部１５Ａおよび可動接点６Ａの開離軸上の
アークランナー１２に凸部１５Ａをそれぞれ設け、アー
クをｆ→ｇに移行しやすくすることにより、可動接点６
Ａを片寄りなく全体的に加熱でき、剥離防止が可能とな
り、遮断性能も向上する。However, the convex portion 15A is provided on the back surface of the movable contact 6A mounting surface of the movable contact 6 and the convex portion 15A is provided on the arc runner 12 on the opening axis of the movable contact 6A, and the arc is shifted from f to g. By making it easier, the movable contact 6
A can be entirely heated without unevenness, peeling can be prevented, and barrier performance can be improved.

【００５０】このため、アークｆの可動接触子６の背面
への移行は図１に示す実施例よりよくなり、また、可動
接触子６の背面を利用してアークの遮断を行っているた
め、可動接触子６の寿命が向上する。従って、開閉器本
体の寿命も向上する。Therefore, the transfer of the arc f to the back surface of the movable contact 6 is better than that of the embodiment shown in FIG. 1, and since the back surface of the movable contact 6 is used to interrupt the arc. The life of the movable contact 6 is improved. Therefore, the life of the switch body is also improved.

【００５１】実施例１０．図１２は請求項１の発明の他
の実施例を示す電磁接触器の片側の消弧機構の側面図で
あり、図において、６は可動接触子、６Ａは可動接触子
６に取り付けられた可動接点、８はＵ字状に折り返され
た固定接触子、８Ａは固定接触子に取り付けられ可動接
点６Ａと接離可能な固定接点である。Example 10. FIG. 12 is a side view of an arc extinguishing mechanism on one side of an electromagnetic contactor showing another embodiment of the invention of claim 1, in which 6 is a movable contactor and 6A is a movable contactor attached to the movable contactor 6. A contact, 8 is a fixed contact that is folded back in a U shape, and 8A is a fixed contact that is attached to the fixed contact and that can be brought into contact with and separated from the movable contact 6A.

【００５２】また、１２は可動接触子６の可動接点６Ａ
取付部の背面近傍に一端を面するアークランナー、１５
Ａはアークを可動接点６の背面に移行し易いように設け
られた凸部である。アークを可動接触子６の背面に移行
し易いように設けた凸部１５Ａは、可動接点６Ａの開離
軸上からはずれて、可動接触子６の可動接点６Ａ取付面
の背面と、可動接触子６に面するアークランナー１２に
設けられている。Further, 12 is a movable contact 6A of the movable contactor 6.
Arc runner with one end facing the back of the mounting part, 15
A is a convex portion provided so as to easily transfer the arc to the back surface of the movable contact 6. The convex portion 15A provided so as to easily transfer the arc to the back surface of the movable contact 6 is displaced from the opening axis of the movable contact 6A, and the rear surface of the movable contact 6A mounting surface of the movable contact 6 and the movable contact child. It is provided on the arc runner 12 which faces 6.

【００５３】次に動作について説明する。操作コイル４
を消磁すると、引き外しばねにより可動鉄心３が固定鉄
心２より開離し、クロスバー５が図４４に示す状態にな
るため、可動接触子６と固定接触子８との間が開く。こ
のとき、電流の遮断が行われ、アークａ〜ｇがａ→ｂ→
ｃ，ｄ→ｅ，ｆ、そしてｆ→ｇのように発生し、駆動さ
れ、遮断に至る。Next, the operation will be described. Operating coil 4
When is demagnetized, the movable iron core 3 is separated from the fixed iron core 2 by the tripping spring, and the crossbar 5 is brought into the state shown in FIG. 44, so that the movable contact 6 and the fixed contact 8 are opened. At this time, the current is cut off, and the arcs a to g are a → b →
C, d → e, f, and f → g are generated, driven, and cut off.

【００５４】また、アークｇによって可動接触子６側の
凸部１５Ａも加熱されるが、その熱は可動接触子６の可
動接点６Ａ側とその反対側へ伝わる、従って、可動接触
子６先端にアークｆが発生する場合よりも可動接点６Ａ
の剥離は起りにくい。また、可動接触子６の背面を利用
してアークの遮断を行っているため、可動接触子６の寿
命が向上する。従って、開閉器本体の寿命も向上する。Further, the convex portion 15A on the movable contact 6 side is also heated by the arc g, but the heat is transmitted to the movable contact 6A side of the movable contact 6 and the opposite side thereof. Moving contact 6A more than when arc f is generated
Peeling is unlikely to occur. Further, since the arc is cut off by using the back surface of the movable contact 6, the life of the movable contact 6 is improved. Therefore, the life of the switch body is also improved.

【００５５】実施例１１．図１３は請求項１の発明の他
の実施例を示す電磁接触器の片側の消弧機構の斜視図で
ある。これは実施例５のアークランナー１２に凸部１５
Ａに代えて孔１５Ｃを設けたもので、上記実施例５と同
様の効果を奏する。そのうえ孔１５Ｃを設けたことで、
ホットガスがこの孔１５Ｃを通り、ガスの流動が生じ、
アークは転移し易くなる。Example 11. FIG. 13 is a perspective view of an arc extinguishing mechanism on one side of an electromagnetic contactor showing another embodiment of the invention of claim 1. This is the convex portion 15 on the arc runner 12 of the fifth embodiment.
A hole 15C is provided in place of A, and the same effect as that of the fifth embodiment is obtained. Moreover, by providing the hole 15C,
The hot gas passes through this hole 15C, and the flow of gas occurs,
The arc is easy to transfer.

【００５６】実施例１２．図１４は請求項１の発明の他
の実施例を示す電磁接触器の片側の消弧機構の斜視図で
あり、これが実施例６のアークランナー１２に設けた凸
部１５Ａに代えて孔１５Ｃを設けたもので、実施例６と
同様の効果を奏する。そのうえ、孔１５Ｃを設けたこと
で、ホットガスが孔１５Ｃを通り、ガスの流動が生じ、
アークは転移し易くなる。また、アークランナー１２の
凸部１５Ａに代えて可動接触子６の背面側に凹部１５Ｂ
を設けてもよく、上記実施例６と同様の効果を奏する。Example 12 FIG. 14 is a perspective view of an arc extinguishing mechanism on one side of an electromagnetic contactor showing another embodiment of the invention of claim 1, which has a hole 15C in place of the convex portion 15A provided on the arc runner 12 of the sixth embodiment. Since it is provided, the same effect as that of the sixth embodiment is achieved. Moreover, since the holes 15C are provided, the hot gas passes through the holes 15C and gas flow occurs,
The arc is easy to transfer. Further, instead of the convex portion 15A of the arc runner 12, a concave portion 15B is provided on the back side of the movable contactor 6.
May be provided, and the same effect as that of the sixth embodiment can be obtained.

【００５７】実施例１３．図１５は請求項１の発明の他
の実施例を示す電磁接触器の片側の消弧機構の側面図で
あり、これが実施例５の可動接触子６の背面に設けた凸
部１５Ａを凹部１５Ｂとしたもので、これが上記実施例
５と同様の効果を奏する。また、可動接触子６の背面の
凸部１５Ａに代えて可動接触子６の背面側に孔１５Ｃを
設けてもよく、上記実施例５と同様の効果を奏する。そ
のうえ、孔１５Ｃを設けたことで、ホットガスが孔１５
Ｃを通り、ガスの流動が生じ、アークは転移し易くな
る。Example 13. FIG. 15 is a side view of an arc extinguishing mechanism on one side of an electromagnetic contactor showing another embodiment of the invention of claim 1. This is a convex portion 15A provided on the back surface of the movable contact 6 of the fifth embodiment and a concave portion 15B. This has the same effect as the fifth embodiment. Further, instead of the convex portion 15A on the back surface of the movable contactor 6, a hole 15C may be provided on the back surface side of the movable contactor 6, and the same effect as that of the above-described fifth embodiment is obtained. Moreover, since the hole 15C is provided, the hot gas is prevented from flowing into the hole 15C.
Gas flows through C, and the arc easily transfers.

【００５８】実施例１４．図１６は請求項１の発明の他
の実施例を示す電磁接触器の片側の消弧機構の側面図で
あり、これが実施例６の可動接触子６の背面に設けた凸
部１５Ａを孔１５Ｃとしたもので、上記実施例６と同様
の効果を奏する。そのうえ、孔１５Ｃを設けたことでホ
ットガスが孔１５Ｃを通るとともに、ガスの流動があ
り、アークは転移し易くなる。また、可動接触子６の凸
部１５Ａに代えて可動接触子６背面側に凹部１５Ｂを設
けてもよく、上記実施例６と同様の効果を奏する。Example 14 FIG. 16 is a side view of an arc extinguishing mechanism on one side of an electromagnetic contactor showing another embodiment of the invention of claim 1. This is a convex portion 15A provided on the back surface of the movable contact 6 of the sixth embodiment, and a hole 15C. Therefore, the same effect as that of the sixth embodiment can be obtained. Moreover, since the hole 15C is provided, the hot gas passes through the hole 15C and the gas flows, so that the arc is easily transferred. Further, instead of the convex portion 15A of the movable contactor 6, a concave portion 15B may be provided on the rear surface side of the movable contactor 6, and the same effect as that of the above-described sixth embodiment is obtained.

【００５９】実施例１５．図１７は請求項１の発明の他
の実施例を示す電磁接触器の片側の消弧機構の側面図で
あり、これが実施例５の可動接触子６の背面に設けた凸
部１５Ａに代えて凹部１５Ｂにし、アークランナー１２
に設けた凸部１５Ａに代えて孔１５Ｃとしたもので、実
施例５と同様の効果を奏する。また、可動接触子６の背
面の凹部１５Ｂに代えて可動接触子６の背面側に孔１５
Ｃを設けてもよく、アークランナー１２の凸部１５Ａに
代えて可動接触子６の背面側に凹部１５Ｂを設けてもよ
く、上記実施例５と同様の効果を奏する。Example 15. FIG. 17 is a side view of an arc extinguishing mechanism on one side of an electromagnetic contactor showing another embodiment of the invention of claim 1, which replaces the convex portion 15A provided on the back surface of the movable contact 6 of the fifth embodiment. The concave portion 15B is formed, and the arc runner 12 is formed.
The hole 15C is used instead of the convex portion 15A provided in the above, and the same effect as that of the fifth embodiment is obtained. Further, instead of the concave portion 15B on the back surface of the movable contact 6, a hole 15 is formed on the back side of the movable contact 6.
C may be provided, and instead of the convex portion 15A of the arc runner 12, a concave portion 15B may be provided on the back surface side of the movable contactor 6, and the same effect as that of the above-described fifth embodiment is obtained.

【００６０】実施例１６．図１８は請求項１の発明の他
の実施例を示す電磁接触器の片側の消磁機構の側面図で
あり、これが実施例６の可動接触子６の背面に設けた凸
部１５Ａに代えて孔１５Ｃとしたもので、実施例６と同
様の効果を奏する。また、可動接触子６の孔１５Ｃに代
えて可動接触子６の背面側に凹部１５Ｂを設けてもよ
く、アークランナー１２の凸部１５Ａに代えて可動接触
子６の背面側に凹部１５Ｂを設けてもよく、上記実施例
６と同様の効果を奏する。Example 16. FIG. 18 is a side view of a degaussing mechanism on one side of an electromagnetic contactor showing another embodiment of the invention of claim 1, which is a hole instead of the convex portion 15A provided on the back surface of the movable contactor 6 of the sixth embodiment. With 15C, the same effects as in Example 6 are obtained. Further, the recess 15B may be provided on the back side of the movable contact 6 instead of the hole 15C of the movable contact 6, and the recess 15B may be provided on the back side of the movable contact 6 instead of the projection 15A of the arc runner 12. However, the same effect as that of the sixth embodiment can be obtained.

【００６１】図１２から図１８に示した可動接触子６の
背面と可動接触子６の背面に面するアークランナー１２
に設けられた凸部１５Ａ，凹部１５Ｂ，孔１５Ｃは、接
点６Ａ，８Ａの開離軸に並行であるが、ずれていても同
様の効果が得られる。孔１５Ｃを設けた場合、ホットガ
スが孔１５Ｃを通り、ガスの流動が生じて、アークは転
移し易くなる。The arc runner 12 facing the back surface of the movable contact 6 and the back surface of the movable contact 6 shown in FIGS.
The convex portion 15A, the concave portion 15B, and the hole 15C provided on the are parallel to the opening and closing axes of the contacts 6A and 8A, but the same effect can be obtained even if they are deviated. When the hole 15C is provided, hot gas passes through the hole 15C, gas flow occurs, and the arc is easily transferred.

【００６２】実施例１７．図１９は請求項１の発明の他
の実施例を示す電磁接触器の片側の消弧機構の側面図で
あり、図２０はその斜視図である。これは実施例１のＵ
字状に折り返された固定接触子８を平らな板状にしたも
ので、上記実施例１と同様の効果を奏する。Example 17 FIG. 19 is a side view of an arc extinguishing mechanism on one side of an electromagnetic contactor showing another embodiment of the invention of claim 1, and FIG. 20 is a perspective view thereof. This is the U of Example 1.
The fixed contactor 8 folded back in a letter shape is formed into a flat plate shape, and has the same effect as that of the first embodiment.

【００６３】実施例１８．図２１は請求項１の発明の他
の実施例を示す電磁接触器の片側の消弧機構の斜視図で
あり、これは実施例２のＵ字状に折り返された固定接触
子８を平らな板状としたもので、実施例２と同様の効果
を奏する。Example 18. FIG. 21 is a perspective view of an arc extinguishing mechanism on one side of an electromagnetic contactor showing another embodiment of the invention of claim 1, which is a flattened version of the fixed contact 8 folded back in a U shape of the second embodiment. Since it has a plate shape, the same effect as that of the second embodiment is obtained.

【００６４】実施例１９．図２２，図２３および図２４
は請求項１の発明の他の実施例を示す電磁接触器の片側
の消弧機構の側面図であり、これは上記図６〜図８の実
施例のＵ字状に折り返された固定接触子８を平らな板状
としたもので、上記各実施例と同様の効果を奏する。Example 19 22, 23 and 24
FIG. 8 is a side view of an arc extinguishing mechanism on one side of an electromagnetic contactor showing another embodiment of the invention of claim 1, which is a fixed contact which is folded back in a U shape in the embodiment of FIGS. 6 to 8; 8 is a flat plate shape, and has the same effect as each of the above embodiments.

【００６５】また、上記各実施例のＵ字状に折り返され
た固定接触子８を段付き形状や他の形状としてもよく、
上記実施例と同様の効果を奏する。Further, the fixed contact 8 folded back in a U shape in each of the above embodiments may have a stepped shape or another shape,
The same effect as that of the above embodiment is obtained.

【００６６】実施例２０．図２５は請求項１の発明の他
の実施例を示す電磁接触器の片側の消弧機構の側面図で
あり、これの周囲部分については、図４４の従来例に示
されているので省略する。図において、６は可動接触
子、６Ａは可動接触子６に取り付けられた可動接点、８
は可動接触子６と反対方向に延びる固定接触子、８Ａは
固定接触子８に取り付けられ可動接点６Ａと接離可能な
固定接点である。Example 20. FIG. 25 is a side view of an arc extinguishing mechanism on one side of an electromagnetic contactor showing another embodiment of the invention of claim 1, and the peripheral portions thereof are shown in the conventional example of FIG. . In the figure, 6 is a movable contact, 6A is a movable contact attached to the movable contact 6, and 8 is a movable contact.
Is a fixed contact that extends in the opposite direction to the movable contact 6, and 8A is a fixed contact that is attached to the fixed contact 8 and that can contact and separate from the movable contact 6A.

【００６７】また、１２はアークランナーで、そのアー
クランナー１２は可動接点６Ａ取付部の背面近傍に面
し、かつ可動接触子６側へ延びるＵ字状の部位１２Ｅを
有する。アークランナー１２のＵ字状の部位１２Ｅは可
動接触子６の可動接点６Ａ取付面の背面からはずされた
ところに設けられている。１５Ｃはアークを移行し易い
ように可動接触子６に設けた孔である。Reference numeral 12 is an arc runner, which has a U-shaped portion 12E facing the vicinity of the rear surface of the mounting portion of the movable contact 6A and extending toward the movable contact 6 side. The U-shaped portion 12E of the arc runner 12 is provided at a position removed from the back surface of the movable contact 6A mounting surface of the movable contactor 6. 15C is a hole provided in the movable contact 6 so that the arc can be easily transferred.

【００６８】次に動作について説明する。図４４の従来
例と同様に、操作コイル４を消磁すると、引き外しばね
により可動鉄心３が固定鉄心２より開離し、クロスバー
５が図４４に示す状態になるため、可動接触子６と固定
接触子８との間が開くとき、電流の遮断が行われる。Next, the operation will be described. Similarly to the conventional example of FIG. 44, when the operating coil 4 is demagnetized, the tripping spring causes the movable iron core 3 to separate from the fixed iron core 2, and the crossbar 5 enters the state shown in FIG. When the contact 8 is opened, the current is cut off.

【００６９】そして、接点６Ａ，８Ａ間で発生したアー
クａ〜ｇはａ→ｂ，ｃ→ｄ，ｅ、ｄ→ｆ→ｇのように可
動接触子６に設けられた孔１５Ｃとアークランナー１２
のＵ字状の部位１２Ｅの間に駆動され、電流零点で遮断
される。孔１５Ｃを設けた場合、ホットガスが孔１５Ｃ
を通りガスの流動が生じて、アークは転移し易くなる。The arcs a to g generated between the contacts 6A and 8A are as follows: a → b, c → d, e, d → f → g.
It is driven between the U-shaped portions 12E and is cut off at the current zero point. When the hole 15C is provided, the hot gas is
The gas flows through the arc, and the arc is easily transferred.

【００７０】図４４の従来例ではアークｆは停滞し、可
動接触子６の先端部の局所的加熱（可動接点６Ａを片側
から加熱する）により、可動接触子６に消耗と損傷が起
こるとともに、可動接点６Ａの剥離が起き易く、遮断性
能も衰える。In the conventional example shown in FIG. 44, the arc f is stagnant, and local heating of the tip of the movable contact 6 (heating the movable contact 6A from one side) causes wear and damage to the movable contact 6, and The movable contact 6A is easily peeled off, and the breaking performance is deteriorated.

【００７１】この実施例では、アークによって孔１５Ｃ
が加熱されるが、その熱は可動接触子６の可動接点６Ａ
側とその反対側へ伝わる、従って可動接触子６先端にア
ークｆが発生する場合よりも、可動接点６Ａの剥離は起
こりにくい。また、可動接触子６の背面を利用してアー
クの遮断を行っているため、可動接触子６の寿命が向上
する。従って、開閉器本体の寿命も向上する。In this embodiment, the holes 15C are formed by the arc.
Is heated, but the heat is generated by the movable contact 6A of the movable contactor 6.
Of the movable contact 6A is less likely to occur than in the case where the arc f is generated at the tip of the movable contact 6 and is transmitted to the opposite side. Further, since the arc is cut off by using the back surface of the movable contact 6, the life of the movable contact 6 is improved. Therefore, the life of the switch body is also improved.

【００７２】実施例２１．図２６は請求項１の発明の他
の実施例を示す電磁接触器の片側の消弧機構の側面図で
あり、図において、６は可動接触子、６Ａは可動接触子
６に取り付けられた可動接点、８は可動接触子６と反対
方向に延びる固定接触子、８Ａは固定接触子８に取り付
けられて、可動接点６Ａと接離可能な固定接点である。Example 21. FIG. 26 is a side view of an arc extinguishing mechanism on one side of an electromagnetic contactor showing another embodiment of the invention of claim 1, in which 6 is a movable contactor and 6A is a movable contactor attached to the movable contactor 6. A contact, 8 is a fixed contact extending in the opposite direction to the movable contact 6, and 8A is a fixed contact that is attached to the fixed contact 8 and can be brought into contact with and separated from the movable contact 6A.

【００７３】また、１２はアークランナーで、そのアー
クランナー１２は一端を可動接触子６の可動接点６Ａ取
付部の背面近傍に面し、可動接触子６側へ延びるＵ字状
の部位１２Ｅを有する。アークランナー１２のＵ字状の
部位１２Ｅは可動接触子６の可動接点６Ａ取付面の背面
に位置するところに設けられている。１５Ｃはアークを
移行し易いように、可動接触子６の可動接点６Ａ部に設
けられた孔である。Reference numeral 12 is an arc runner, and one end of the arc runner 12 faces the vicinity of the back surface of the movable contact 6A mounting portion of the movable contact 6 and has a U-shaped portion 12E extending toward the movable contact 6 side. . The U-shaped portion 12E of the arc runner 12 is provided at a position located behind the movable contact 6A mounting surface of the movable contactor 6. 15C is a hole provided in the movable contact 6A portion of the movable contact 6 so that the arc can be easily transferred.

【００７４】次に動作について説明する。操作コイル４
を消磁すると、引き外しばねにより可動鉄心３が固定鉄
心２より開離し、クロスバー５が図４４に示す状態にな
るため、可動接触子６と固定接触子８との間が開くと
き、電流の遮断が行われる。Next, the operation will be described. Operating coil 4
When is demagnetized, the movable iron core 3 is separated from the fixed iron core 2 by the tripping spring, and the crossbar 5 is brought into the state shown in FIG. 44. Therefore, when the movable contact 6 and the fixed contact 8 are opened, The interruption is made.

【００７５】そして、接点６Ａ，８Ａ間で発生したアー
クａ〜ｇはａ→ｂ，ｃ→ｄ，ｅ、ｄ→ｆ→ｇのように可
動接触子６に設けられた孔１５Ｃとアークランナー１２
のＵ字状の部位１２Ｅの間に駆動され、電流零点で遮断
される。孔１５Ｃを設けた楊合、ホットガスが孔１５Ｃ
を通りガスの流動が生じて、アークは転移し易くなる。The arcs a to g generated between the contacts 6A and 8A are the holes 15C provided in the movable contact 6 and the arc runner 12 as a → b, c → d, e, d → f → g.
It is driven between the U-shaped portions 12E and is cut off at the current zero point. When the hole 15C is provided, the hot gas is the hole 15C.
The gas flows through the arc, and the arc is easily transferred.

【００７６】図４４の従来例では、アークｆは停滞し、
可動接触子６の先端部の局所的加熱（可動接点６Ａを片
側から加熱する）により、可動接触子６の消耗と損傷が
起こるとともに、可動接点６Ａの剥離が起き易く、遮断
性能も衰える。In the conventional example of FIG. 44, the arc f is stagnant,
Due to local heating of the tip of the movable contact 6 (heating the movable contact 6A from one side), the movable contact 6 is consumed and damaged, and the movable contact 6A easily peels off and the breaking performance deteriorates.

【００７７】しかし、可動接触子６に孔１５Ｃを設け、
アークｆをアークｇに移行し易くすることにより、可動
接点６Ａを片寄りなく全体的に加熱でき、剥離防止が可
能になり、遮断性能も向上する。However, the movable contact 6 is provided with the hole 15C,
By facilitating the transfer of the arc f to the arc g, the movable contact 6A can be entirely heated without unevenness, peeling can be prevented, and the breaking performance is improved.

【００７８】なお、この剥離は冷却の際に起こるが、一
様に加熱され冷却されれば、剥離は起こらない。また、
可動接触子６の背面を利用してアークの遮断を行ってい
るため、可動接触子６の寿命が向上する。従って、開閉
器本体の寿命も向上する。This peeling occurs during cooling, but if it is uniformly heated and cooled, the peeling does not occur. Also,
Since the arc is cut off by using the back surface of the movable contact 6, the life of the movable contact 6 is improved. Therefore, the life of the switch body is also improved.

【００７９】実施例２２．図２７は請求項１の発明の他
の実施例を示す電磁接触器の消弧機構の側面図であり、
これが図２５の実施例の可動接触子６に設けた孔１５Ｃ
にしたもので、上記実施例７と同様の効果を奏する。Example 22. FIG. 27 is a side view of an arc extinguishing mechanism of an electromagnetic contactor showing another embodiment of the invention of claim 1.
This is the hole 15C provided in the movable contact 6 of the embodiment of FIG.
The same effect as the seventh embodiment is obtained.

【００８０】実施例２３．図２８は請求項１の発明の他
の実施例を示す電磁接触器の消弧機構の側面図であり、
これが図２６の実施例の可動接触子６に設けた孔１５Ｃ
を凹部１５Ｂにしたもので、上記実施例と同様の効果を
奏する。Example 23. FIG. 28 is a side view of an arc extinguishing mechanism of an electromagnetic contactor showing another embodiment of the invention of claim 1.
This is the hole 15C provided in the movable contact 6 of the embodiment of FIG.
The concave portion 15B has the same effect as the above embodiment.

【００８１】実施例２４．図２９は請求項１の発明の他
の実施例を示す電磁接触器の消弧機構の側面図であり、
これが図２５の実施例の可動接触子６に設けた孔１５Ｃ
を凸部１５Ａにしたもので、実施例２０と同様の効果を
奏する。Example 24. FIG. 29 is a side view of an arc extinguishing mechanism of an electromagnetic contactor showing another embodiment of the invention according to claim 1.
This is the hole 15C provided in the movable contact 6 of the embodiment of FIG.
The convex portion 15A has the same effect as that of the twentieth embodiment.

【００８２】実施例２５．図３０は請求項１の発明の他
の実施例を示す電磁接触器の消弧機構の側面図であり、
これが図２６の実施例の可動接触子６に設けた孔１５Ｃ
を凸部１５Ａにしたもので、上記実施例と同様の効果を
奏する。Example 25. FIG. 30 is a side view of an arc extinguishing mechanism of an electromagnetic contactor showing another embodiment of the invention of claim 1.
This is the hole 15C provided in the movable contact 6 of the embodiment of FIG.
The convex portion 15A has the same effect as that of the above embodiment.

【００８３】実施例２６．図３１から図３６は請求項１
の発明の他の実施例を示す電磁接触器の消弧機構の側面
図であり、これは図２５および図２６の実施例に示すア
ークランナー１２において、可動接触子６の背面に面す
る部位のＵ字状の部位１２Ｅを、単に可動接触子６側へ
曲げて、アーク転移部１２Ｆを形成したものである。Example 26. 31 to 36 are claims 1
FIG. 27 is a side view of an arc extinguishing mechanism of an electromagnetic contactor showing another embodiment of the invention of FIG. 25, which shows a part of the arc runner 12 shown in the embodiment of FIGS. The U-shaped portion 12E is simply bent to the movable contact 6 side to form the arc transition portion 12F.

【００８４】また、可動接触子６の背面にはアーク転移
部１２Ｆに対向して凸部１５Ａや凹部１５Ｂあるいは１
５Ｃを設けており、孔１５Ｃを設けた場合、ホットガス
が孔１５Ｃを通り、ガスの流動を発生させて、アークを
さらに転移し易くするほか、図３１，図３３および図３
５の構成によれば図２５の実施例と同様の効果を奏し、
また、図３２，図３４および図３６は図２６の実施例と
同様の効果を奏する。Further, on the back surface of the movable contact 6, a convex portion 15A, a concave portion 15B or 1 is provided facing the arc transition portion 12F.
5C is provided and the hole 15C is provided, the hot gas passes through the hole 15C to generate a gas flow to further facilitate the transfer of the arc.
According to the constitution of 5, the same effect as the embodiment of FIG.
Further, FIGS. 32, 34 and 36 have the same effect as the embodiment of FIG.

【００８５】ここで図１から図３６のアークランナー１
２には、図４４の従来例と異り、可動接触子６と固定接
触子８の側面を覆う部分はないが、例えば、図３７に示
すように、可動接触子６と固定接触子８の側面を覆う部
分１２ａを設けてよい。Here, the arc runner 1 shown in FIGS. 1 to 36 is used.
Unlike the conventional example shown in FIG. 44, 2 does not have a portion that covers the side surfaces of the movable contact 6 and the fixed contact 8, but, for example, as shown in FIG. You may provide the part 12a which covers a side surface.

【００８６】実施例２７．図３８は請求項２の発明の他
の実施例を示す電磁接触器の片側の消弧機構の側面図で
あり、これの周囲部分は図４４の従来例に示されている
ので、重複する説明を省略する。同図において、８は固
定接触子、８Ａはこの固定接触子８に接合された固定接
点、６は固定接触子８に対向配置されて、上記固定接触
子８と反対方向に延びる可動接触子、６Ａはこの可動接
触子６に接合されて、上記固定接点８Ａと接離可能な可
動接点である。Example 27. FIG. 38 is a side view of an arc extinguishing mechanism on one side of an electromagnetic contactor showing another embodiment of the invention of claim 2, and the peripheral portion thereof is shown in the conventional example of FIG. Is omitted. In the figure, 8 is a fixed contact, 8A is a fixed contact joined to this fixed contact 8, 6 is a movable contact which is arranged facing the fixed contact 8 and extends in the opposite direction to the fixed contact 8. 6A is a movable contact which is joined to the movable contact 6 and can be brought into contact with and separated from the fixed contact 8A.

【００８７】また、８Ｂは固定接触子８の固定接点８Ａ
近傍から可動接触子６方向に延び、その先端からさらに
可動接触子６側とは反対の方向に水平に延びるアークラ
ンナーである。Further, 8B is a fixed contact 8A of the fixed contactor 8.
The arc runner extends from the vicinity in the direction of the movable contact 6 and further horizontally extends from the tip thereof in the direction opposite to the side of the movable contact 6.

【００８８】さらに、１３は上記両接点６Ａ，８Ａの接
離方向に並行して立設され、かつ上記固定接触子８の近
接部位に、上記接点６Ａ，８Ａの接離空間に対向突設さ
れたコの字状突起１３Ａを有する金属消弧板である。Further, 13 is erected in parallel with the contact and separation direction of both the contacts 6A and 8A, and is provided in the vicinity of the fixed contact 8 so as to face the contact and separation space of the contacts 6A and 8A. It is a metal arc-extinguishing plate having a U-shaped projection 13A.

【００８９】次に動作について説明する。操作コイル４
を消磁すると、引き外しばねにより可動鉄心３が固定鉄
心２より開離し、クロスバー５が図４４に示す状態にな
る。このため、可動接触子６と固定接触子８との間が開
き、このとき、電流の遮断が行われる。Next, the operation will be described. Operating coil 4
Is demagnetized, the movable iron core 3 is separated from the fixed iron core 2 by the tripping spring, and the crossbar 5 is brought into the state shown in FIG. Therefore, the movable contact 6 and the fixed contact 8 are opened, and at this time, the current is cut off.

【００９０】そして、接点６Ａ，８Ａ間に発生したアー
クａ，ｃを経て、可動接触子６の先端と金属消弧板１３
との間のアークｄと、アークランナー８Ｂと金属消弧板
１３との間のアークｅの２ケ所に移行される。Then, through the arcs a and c generated between the contacts 6A and 8A, the tip of the movable contact 6 and the metal arc-extinguishing plate 13
To the arc d between the arc runner 8B and the metal arc-extinguishing plate 13.

【００９１】このため、アークランナー８Ｂと金属消弧
板１３との間に移行したアークｅは、アークランナー８
Ｂと金属消弧板１３に流れる電流によって生じる磁場に
よりｅ→ｆ→ｇと、接点６Ａ，８Ａの開離空間から遠ざ
かる方向へと駆動される。そして、アークｇは引き延ば
されたアークとなり、電流零点において遮断される。Therefore, the arc e transferred between the arc runner 8B and the metal arc-extinguishing plate 13 is the arc runner 8
The magnetic field generated by the current flowing through B and the metal arc-extinguishing plate 13 drives e → f → g in a direction away from the open space of the contacts 6A and 8A. Then, the arc g becomes a stretched arc and is cut off at the current zero point.

【００９２】また、アーク電圧はアークを２ケ所に移行
したことと、引き延ばされたアークｇにより高くなり、
遮断に有利になる。アーク電圧が高くなると、アーク抵
抗が高くなり、遮断すべき電流が小さくなる。Further, the arc voltage becomes high due to the fact that the arc is transferred to two places and the extended arc g,
It is advantageous to shut off. The higher the arc voltage, the higher the arc resistance and the smaller the current to be interrupted.

【００９３】さらに、接点６Ａ，８Ａの接離空間に対向
突設されたコの字状突起１３Ａを有する金属消弧板１３
と、固定接触子８に設けたアークランナー８Ｂとを備え
たことにより、アークランナー８Ｂと金属消弧板１３と
の間のアークを接点６Ａ，８Ａの開離空間から遠ざかる
方向へと駆動し、電流零点においてホットガスや金属蒸
気をアークランナー８Ｂと金属消弧板１３との間から、
接点６Ａ，８Ａの開離空間から遠ざかる方向へ追い出す
ため、再点弧しにくくなる。Further, the metal arc-extinguishing plate 13 having a U-shaped projection 13A that is provided so as to face each other in the contact and separation space of the contacts 6A and 8A.
By including the arc runner 8B provided on the fixed contactor 8, the arc between the arc runner 8B and the metal arc-extinguishing plate 13 is driven in a direction away from the open space of the contacts 6A, 8A, At the current zero point, hot gas or metal vapor is passed between the arc runner 8B and the metal arc extinguishing plate 13,
Since the contacts 6A and 8A are driven away from the open space, re-ignition becomes difficult.

【００９４】実施例２８．図３９は請求項２の発明の他
の実施例を示す電磁接触器の片側の消弧機構の側面図で
あり、これの周囲部分においては図４４の従来例に示さ
れているので、その重複する説明を省略する。同図にお
いて、８は固定接触子、８Ａは固定接触子８に接合され
た固定接点、６は上記固定接触子８に対向配置されて、
上記固定接触子８と反対方向に延びる可動接触子、６Ａ
はこの可動接触子６に接合され、かつ上記固定接点８Ａ
と接離可能な可動接点である。Example 28. FIG. 39 is a side view of an arc extinguishing mechanism on one side of an electromagnetic contactor showing another embodiment of the invention of claim 2, and the peripheral portion thereof is shown in the conventional example of FIG. The description will be omitted. In the figure, 8 is a fixed contact, 8A is a fixed contact joined to the fixed contact 8, and 6 is disposed so as to face the fixed contact 8.
Movable contactor 6A extending in the opposite direction to the fixed contactor 8
Is joined to the movable contact 6 and the fixed contact 8A.
It is a movable contact that can be brought into and out of contact with.

【００９５】また、８Ｂは固定接触子８の固定接点８Ａ
近傍から可動接触子６側に延び、その先端から可動接触
子６と反対方向に延びるアークランナーで、このアーク
ランナー８Ｂの先端には固定接触子８側へ曲つた折り曲
げ部８Ｃを有する。Further, 8B is a fixed contact 8A of the fixed contactor 8.
The arc runner extends from the vicinity to the movable contact 6 side and extends from the tip in the opposite direction to the movable contact 6. The arc runner 8B has a bent portion 8C bent toward the fixed contact 8 side at the tip.

【００９６】さらに、１３は上記両接点６Ａ，８Ａの接
離方向に並行して立設され、上記固定接触子８の近接部
位に上記接点６Ａ，８Ａの接離空間に対向突設されたコ
の字状突起１３Ａを有し、その固定接触子８側の端部
を、固定接触子８から遠ざかる方向に曲げた折り曲げ部
１３Ｃを有する金属消弧板である。Further, reference numeral 13 stands upright in parallel with the contacting / separating direction of both the contacts 6A, 8A, and a projecting member is provided in the vicinity of the fixed contact 8 so as to face the contacting / separating space of the contacts 6A, 8A. It is a metal arc-extinguishing plate having a V-shaped projection 13A and a bent portion 13C in which the end on the fixed contact 8 side is bent in a direction away from the fixed contact 8.

【００９７】次に動作について説明する。操作コイル４
を消磁すると、引き外しばねにより可動鉄心３が固定鉄
心２より開離し、クロスバー５が図４４に示す状態にな
る。このため、可動接触子６と固定接触子８との間が開
く。Next, the operation will be described. Operating coil 4
Is demagnetized, the movable iron core 3 is separated from the fixed iron core 2 by the tripping spring, and the crossbar 5 is brought into the state shown in FIG. Therefore, the movable contact 6 and the fixed contact 8 are opened.

【００９８】このとき、電流の遮断が行われ、接点６
Ａ，８Ａ間に発生したアークａは、アークｂ，ｃを経
て、可動接触子６の先端と金属消弧板１３の間のアーク
ｄと、アークランナー８Ｂと金属消弧板１３との間のア
ークｅの２ケ所に移行される。At this time, the current is cut off and the contact 6
The arc a generated between A and 8A passes through the arcs b and c, and the arc d between the tip of the movable contactor 6 and the metal arc-extinguishing plate 13 and between the arc runner 8B and the metal arc-extinguishing plate 13. Moved to two locations on arc e.

【００９９】アークランナー８Ｂと金属消弧板１３との
間に移行したアークｅは、ランナー８Ｂと金属消弧板１
３に流れる電流によって生じる磁場により、ｅ→ｆ→ｇ
と接点６Ａ，８Ａの開離空間から遠ざかる方向へと駆動
される。The arc e transferred between the arc runner 8B and the metal arc extinguishing plate 13 is the runner 8B and the metal arc extinguishing plate 1.
The magnetic field generated by the current flowing in 3 e → f → g
And the contacts 6A and 8A are driven away from the open space.

【０１００】そして、折り曲げ部８Ｃ，１３Ｃへ移行さ
れたアークｇは、図３８に示したアークｇよりさらに長
く引き延ばされ、そして、電流零点においてアークは遮
断される。Then, the arc g transferred to the bent portions 8C and 13C is extended longer than the arc g shown in FIG. 38, and the arc is cut off at the current zero point.

【０１０１】これによれば、アーク電圧はアークを２ケ
所に移行したことと、図３８のように引き延ばされたア
ークｇにより高くなり、遮断に有利になる。アーク電圧
が高くなると、アーク抵抗が高くなり、遮断すべき電流
が小さくなる。According to this, the arc voltage becomes higher due to the fact that the arc is transferred to two places and the arc g stretched as shown in FIG. 38, which is advantageous for interruption. The higher the arc voltage, the higher the arc resistance and the smaller the current to be interrupted.

【０１０２】また、接点６Ａ，８Ａの接離空間に対向突
設されたコの字状突起１３Ａを有する金属消弧板１３と
固定接触子８に設けたアークランナー８Ｂとを備えたこ
とにより、アークランナー８Ｂと金属消弧板１３との間
のアークを接点６Ａ，８Ａの開離空間から遠ざかる方向
へと駆動し、電流零点においてホットガスや金属蒸気を
アークランナー８Ｂと金属消弧板１３との間より接点６
Ａ，８Ａの開離空間から遠ざかる方向へ追い出す。Further, by providing the metal arc-extinguishing plate 13 having the U-shaped projection 13A that is provided so as to face each other in the contact and separation space of the contacts 6A and 8A, and the arc runner 8B provided on the fixed contactor 8, The arc between the arc runner 8B and the metal arc extinguishing plate 13 is driven in a direction away from the open space of the contacts 6A, 8A, and hot gas or metal vapor is discharged between the arc runner 8B and the metal arc extinguishing plate 13 at the current zero point. Contact point 6 between
Drive it away from the open space of A and 8A.

【０１０３】このため再点弧しにくくなり、また、折り
曲げ部８Ｃ，１３Ｃを設けたことで、図３８で示される
ようなエッジ部がなくなり、再点弧しにくくなる。Therefore, re-ignition becomes difficult, and by providing the bent portions 8C and 13C, the edge portion as shown in FIG. 38 disappears and re-ignition becomes difficult.

【０１０４】実施例２９．図４０は請求項２の発明の実
施例を示す電磁接触器の片側の消弧機構の側面図であ
り、周辺部分については、図４４の従来例に示されてい
るので、その重複する説明を省略する。同図において、
８は固定接触子、８Ａはこの固定接触子８に接合された
固定接点、６は固定接触子８に対向配置されて、固定接
触子８と反対方向に延びる可動接触子、６Ａはこの可動
接触子６に接合され、かつ上記固定接点８Ａと接離可能
な可動接点である。Example 29. FIG. 40 is a side view of the arc extinguishing mechanism on one side of the electromagnetic contactor showing the embodiment of the invention of claim 2, and the peripheral portion is shown in the conventional example of FIG. Omit it. In the figure,
Reference numeral 8 is a fixed contact, 8A is a fixed contact joined to the fixed contact 8, 6 is a movable contact which is arranged facing the fixed contact 8 and extends in the opposite direction to the fixed contact 8, and 6A is this movable contact. It is a movable contact that is joined to the child 6 and can be contacted and separated from the fixed contact 8A.

【０１０５】また、８Ｂは固定接触子８の固定接点８Ａ
近傍から可動接触子６側に延び、さらにその先端から可
動接触子６と反対方向に延びるアークランナーである。Further, 8B is a fixed contact 8A of the fixed contactor 8.
It is an arc runner that extends from the vicinity to the movable contact 6 side and further extends from the tip thereof in the direction opposite to the movable contact 6.

【０１０６】さらに、１３は上記両接点６Ａ，８Ａの接
離方向に並行して立設され、上記固定接触子８の近接部
位に上記接点６Ａ，８Ａの接離空間に対向突設されたコ
の字突起１３Ａを有する金属消弧板である。１４は可動
接触子６と金属消弧板１３との間に接点６Ａ，８Ａの接
離方向に並行して立設された金属消弧板である。Further, reference numeral 13 stands upright in parallel with the contacting / separating direction of both the contacts 6A, 8A, and a projecting member is provided in the vicinity of the fixed contact 8 so as to face the contacting / separating space of the contacts 6A, 8A. It is a metal arc-extinguishing plate having a V-shaped projection 13A. Reference numeral 14 denotes a metal arc-extinguishing plate that is erected between the movable contact 6 and the metal arc-extinguishing plate 13 in parallel with the contact and separation directions of the contacts 6A and 8A.

【０１０７】次に動作について説明する。操作コイル４
を消磁すると、引き外しばねにより可動鉄心３が固定鉄
心２より開離し、クロスバー５が図４３に示す状態にな
る。このため、可動接触子６と固定接触子８との間が開
く。Next, the operation will be described. Operating coil 4
Is demagnetized, the movable iron core 3 is separated from the fixed iron core 2 by the tripping spring, and the crossbar 5 is brought into the state shown in FIG. Therefore, the movable contact 6 and the fixed contact 8 are opened.

【０１０８】このとき、電流の遮断が行われ、接点６
Ａ，８Ａ間に発生したアークａは、両接点６Ａ，８Ａと
金属消弧板１３のコの字状突起１３Ａとの間のアーク
ｂ，ｃへ移行する。At this time, the current is cut off and the contact 6
The arc a generated between A and 8A is transferred to the arcs b and c between the contacts 6A and 8A and the U-shaped projection 13A of the metal arc-extinguishing plate 13.

【０１０９】その後、可動接触子６の先端と金属消弧板
１４との間のアークｄと、金属消弧板１４と金属消弧板
１３との間のアークｅと、アークランナー８Ｂと金属消
弧板１３との間のアークｆの３ケ所に移行される。Thereafter, the arc d between the tip of the movable contact 6 and the metal arc extinguishing plate 14, the arc e between the metal arc extinguishing plate 14 and the metal arc extinguishing plate 13, the arc runner 8B and the metal extinguishing plate. It is transferred to three positions of the arc f between the arc plate 13.

【０１１０】アークランナー８Ｂと金属消弧板１３との
間に移行したアークｆは、アークランナー８Ｂと金属消
弧板１３に流れる電流によって生じる磁場により、ｆ→
ｇ→ｈと接点６Ａ，８Ａの開離空間から遠ざかる方向へ
と駆動される。アークｈは引き延ばされたアークとな
り、電流零点において遮断される。The arc f transferred between the arc runner 8B and the metal arc extinguishing plate 13 is f → due to the magnetic field generated by the current flowing through the arc runner 8B and the metal arc extinguishing plate 13.
It is driven in a direction away from the open space of g → h and the contacts 6A, 8A. The arc h becomes a stretched arc and is cut off at the current zero point.

【０１１１】これによれば、アーク電圧はアークを３ケ
所に移行したことと引き延ばされたアークｈにより高く
なり、遮断に有利になる。アーク電圧が高くなると、ア
ーク抵抗が高くなり、遮断すべき電流が小さくなる。According to this, the arc voltage becomes higher due to the fact that the arc is transferred to three places and the extended arc h, which is advantageous for interruption. The higher the arc voltage, the higher the arc resistance and the smaller the current to be interrupted.

【０１１２】また、接点６Ａ，８Ａの接離空間に対向突
設されたコの字状突起１３Ａを有する金属消弧板１３と
固定接触子８に設けたアークランナー８Ｂとを備えたこ
とにより、アークランナー８Ｂと金属消弧板１３との間
のアークを接点６Ａ，８Ａの開離空間から遠ざかる方向
へと駆動し、電流零点においてホットガスや金属蒸気を
アークランナー８Ｂと金属消弧１３との間から接点６
Ａ，８Ａの開離空間から遠ざかる方向へ追い出すため、
再点弧しにくくなる。Further, by providing the metal arc-extinguishing plate 13 having the U-shaped projection 13A that is provided so as to face each other in the contact and separation space of the contacts 6A and 8A, and the arc runner 8B provided on the fixed contactor 8, The arc between the arc runner 8B and the metal arc extinguishing plate 13 is driven in a direction away from the open space of the contacts 6A, 8A, and hot gas or metal vapor is discharged between the arc runner 8B and the metal arc extinguishing 13 at the current zero point. Contact point 6
In order to drive away from the open space of A, 8A,
It becomes difficult to re-ignite.

【０１１３】実施例３０．図４１は請求項２の発明の他
の実施例を示す電磁接触器の片側の消弧機構の側面図で
あり、これが図４０のアークランナー８Ｂの先端に設け
た固定接触子８側への折り曲げ部８Ｃと、コの字状突起
１３Ａを有する金属消弧板１３の固定接触子８側の端部
を固定接触子８から遠ざかる方向へ曲げた折り曲げ部１
３Ｃとを設けたものであり、実施例１１と同等もしくは
それ以上の効果を奏する。Example 30. FIG. 41 is a side view of an arc extinguishing mechanism on one side of an electromagnetic contactor showing another embodiment of the invention of claim 2, which is bent to the side of the fixed contactor 8 provided at the tip of the arc runner 8B of FIG. The bent portion 1 in which the end of the metal arc-extinguishing plate 13 having the portion 8C and the U-shaped projection 13A on the fixed contact 8 side is bent in a direction away from the fixed contact 8.
3C is provided, and an effect equal to or higher than that of Example 11 is achieved.

【０１１４】実施例３１．図４２は請求項２の発明の他
の実施例を示す電磁接触器の片側の消弧機構を示す側面
図であり、周囲部分については図４４の従来例に示され
ているので省略する。同図において、８は固定接触子、
８Ａはこの固定接触子８に接合された固定接点、６は上
記固定接触子８に対向配置されて、上記固定接触子８側
とは反対方向に延びる可動接触子、６Ａはこの可動接触
子６に接合されて、上記固定接点８Ａと接離可能な可動
接点である。Example 31. FIG. 42 is a side view showing an arc extinguishing mechanism on one side of an electromagnetic contactor showing another embodiment of the invention of claim 2, and the peripheral portions thereof are shown in the conventional example of FIG. In the figure, 8 is a fixed contact,
Reference numeral 8A denotes a fixed contact joined to the fixed contactor 8, reference numeral 6 denotes a movable contactor which is arranged to face the fixed contactor 8 and extends in a direction opposite to the fixed contactor 8 side, and 6A denotes the movable contactor 6 Is a movable contact which is joined to and can be contacted with and separated from the fixed contact 8A.

【０１１５】また、８Ｂは固定接触子８の固定接点８Ａ
の近傍から可動接触子６Ａ側に延び、その先端から可動
接触子６と反対方向に延びるアークランナーである。Further, 8B is a fixed contact 8A of the fixed contactor 8.
Is an arc runner that extends from the vicinity of to the movable contact 6A side and extends from the tip thereof in the direction opposite to the movable contact 6.

【０１１６】さらに、１３は上記両接点６Ａ，８Ａの接
離方向に並行して立設され、一端を可動接触子６の可動
接点６Ａ取付部の背面近傍に面し、上記固定接触子８の
近傍部位に上記接点６Ａ，８Ａの接離空間に対向突設さ
れたコの字状突起１３Ａを有する金属消弧板である。Further, 13 is erected parallel to the contact and separation directions of the contacts 6A and 8A, one end of which faces the vicinity of the rear surface of the movable contact 6A mounting portion of the movable contact 6, and the fixed contact 8 It is a metal arc-extinguishing plate having a U-shaped projection 13A that is provided in the vicinity of the contact point 6A, 8A so as to face the contact and separation space.

【０１１７】次に動作について説明する。操作コイル４
を消磁すると、引き外しばねにより可動鉄心３が固定鉄
心２より開離し、クロスバー５が図４４に示す状態にな
る。このため、可動接触子６と固定接触子８との間が開
く。Next, the operation will be described. Operating coil 4
Is demagnetized, the movable iron core 3 is separated from the fixed iron core 2 by the tripping spring, and the crossbar 5 is brought into the state shown in FIG. Therefore, the movable contact 6 and the fixed contact 8 are opened.

【０１１８】このとき、電流の遮断が行われ、接点６
Ａ，８Ａ間に発生したアークａは、アークｂ，ｃを経
て、ｂ→ｄ→ｆと可動接触子６の背面へと回り込むもの
と、ｃ→ｅ→ｇ→ｈと移行し、アークランナー８Ｂと金
属消弧板１３に流れる電流によって生じる磁場により、
接点６Ａ，８Ａの開離空間から遠ざかる方向へと移行す
るものとに分かれて駆動される。そして、電流零点にお
いてアークは遮断される。従って、上記実施例９と同様
の効果を奏する。At this time, the current is cut off and the contact 6
The arc a generated between A and 8A goes through the arcs b and c to b → d → f and the back surface of the movable contactor 6, and c → e → g → h, and the arc runner 8B. And the magnetic field generated by the current flowing in the metal arc-quenching plate 13,
The contacts 6A and 8A are separately driven to move away from the open space. Then, the arc is cut off at the current zero point. Therefore, the same effect as that of the ninth embodiment is obtained.

【０１１９】実施例３２．図４３は請求項１および請求
項２の発明の他の実施例を示す電磁接触器の片側の消弧
機構を示す側面図であり、周囲部分については、図４４
の従来例に示されているので省略する。同図において、
８は固定接触子、８Ａはこの固定接触子８に接合された
固定接点、６は上記固定接触子８に対向配置されて、上
記固定接触子８と反対方向に延びる可動接触子である。Example 32. 43 is a side view showing an arc extinguishing mechanism on one side of an electromagnetic contactor showing another embodiment of the invention of claims 1 and 2, and FIG.
The description is omitted because it is shown in the conventional example. In the figure,
Reference numeral 8 is a fixed contact, 8A is a fixed contact joined to the fixed contact 8, and 6 is a movable contact which is arranged opposite to the fixed contact 8 and extends in the opposite direction to the fixed contact 8.

【０１２０】６Ａはこの可動接触子６に接合され、上記
固定接点８Ａと接離可能な可動接点、１５Ａはアークを
移行し易いように可動接触子６の可動接点６Ａ取付面の
背面に設けられた凸部である。6A is a movable contact which is joined to the movable contact 6 and can be brought into contact with and separated from the fixed contact 8A, and 15A is provided on the back surface of the movable contact 6A mounting surface of the movable contact 6 so that the arc can be easily transferred. It is a convex part.

【０１２１】また、８Ｂは固定接触子８の固定接点８Ａ
近傍から可動接触子６Ａ側に延び、その先端から可動接
触子６と反対方向に延びるアークランナーである。Further, 8B is a fixed contact 8A of the fixed contactor 8.
It is an arc runner that extends from the vicinity to the movable contactor 6A and extends from the tip thereof in the direction opposite to the movable contactor 6.

【０１２２】さらに、１３は上記両接点６Ａ，８Ａの接
離方向に並行して立設され、一端を可動接触子６の可動
接点６Ａ取付部の背面近傍に面し、上記固定接触子８の
近傍部位に上記接点６Ａ，８Ａの接離空間に対向突設さ
れたコの字状突起１３Ａを有する金属消弧板である。Further, 13 is erected parallel to the contact and separation directions of the contacts 6A and 8A, one end of which faces the vicinity of the rear surface of the movable contact 6A mounting portion of the movable contact 6, and the fixed contact 8 It is a metal arc-extinguishing plate having a U-shaped projection 13A that is provided in the vicinity of the contact point 6A, 8A so as to face the contact and separation space.

【０１２３】次に動作について説明する。図４４の従来
例と同様に、操作コイル４を消磁すると、引き外しばね
により可動鉄心３が固定鉄心２より開離し、クロスバー
５が、図４４に示す状態になる。このため、可動接触子
６と固定接触子８との間が開く。Next, the operation will be described. Similarly to the conventional example of FIG. 44, when the operating coil 4 is demagnetized, the tripping spring causes the movable iron core 3 to separate from the fixed iron core 2, and the crossbar 5 becomes the state shown in FIG. Therefore, the movable contact 6 and the fixed contact 8 are opened.

【０１２４】このとき、電流の遮断が行われ、接点６
Ａ，８Ａ間に発生したアークａは、アークｂ，ｃのコの
字状突起１３Ａへ移行し、アークｂはｂ→ｄ→ｆと移行
し、そして可動接触子６の背面へと回り込み、可動接点
６Ａ背面の凸部と可動接触子６の背面に面するアークラ
ンナー１３間のアークｈへと移行する。At this time, the current is cut off and the contact 6
The arc a generated between A and 8A is transferred to the U-shaped projection 13A of the arcs b and c, the arc b is transferred to b → d → f, and then wraps around to the back surface of the movable contact 6 to move. It shifts to the arc h between the convex portion on the back surface of the contact 6A and the arc runner 13 facing the back surface of the movable contact 6.

【０１２５】また、アークｃはｃ→ｅ、そしてアークラ
ンナー８Ｂと金属消弧板１３に流れる電流によって生じ
る磁場によりｅ→ｇ→ｉと、接点６Ａ，８Ａの開離空間
から遠ざかる方向へと駆動される。そして、電流零点に
おいてアークは遮断される。従って、上記実施例１と実
施例２７と同様の効果を奏する。The arc c is driven to c → e, and e → g → i due to the magnetic field generated by the current flowing through the arc runner 8B and the metal arc-extinguishing plate 13 and away from the open space of the contacts 6A and 8A. To be done. Then, the arc is cut off at the current zero point. Therefore, the same effects as those of the above-described first and 27th embodiments are achieved.

【０１２６】上記実施例３２では例として一つしか掲げ
ていないが、請求項１の発明に係わる図１から図３７の
特徴と、請求項２の発明に係わる図３８から図４２の特
徴とのいずれの組み合わせでも、実施例３２と同様の効
果が得られる。Although only one example is given in the 32nd embodiment, the features of FIGS. 1 to 37 according to the invention of claim 1 and the features of FIGS. 38 to 42 according to the invention of claim 2 are described. With any combination, the same effect as in Example 32 can be obtained.

【０１２７】ここで図３８から図４３の金属消弧板１３
あるいは金属消弧板１４には、図４４の従来例と異な
り、可動接触子６と固定接触子８の側面を覆う部分はな
いが、図３７に示したものと同様に、可動接触子６と固
定接触子８の側面を覆う部分１２ａを設けてもよく、上
記実施例と同様の効果を奏する。Here, the metal arc-extinguishing plate 13 shown in FIGS. 38 to 43 is used.
Alternatively, unlike the conventional example of FIG. 44, the metal arc-extinguishing plate 14 does not have a portion that covers the side surfaces of the movable contact 6 and the fixed contact 8, but as with the one shown in FIG. A portion 12a that covers the side surface of the fixed contact 8 may be provided, and the same effect as that of the above-described embodiment can be obtained.

【０１２８】ここで請求項１および請求項２の発明に係
わる説明例として電磁接触器を例に取りあげて説明した
が、配線用遮断器や他の開閉器であつてもよく上記各実
施例と同様の効果を奏する。Although the electromagnetic contactor has been described as an example of the invention according to the first and second aspects, it may be a circuit breaker for wiring or another switch. Has the same effect.

【０１２９】[0129]

【発明の効果】以上のように、請求項１の発明によれ
ば、可動接触子または／および可動接触子の背面に対向
するアークランナーに固定接点および可動接点間で発生
し、かつ上記可動接触子の背面へ移行したアークの遮断
を促進する凸部，凹部または孔を設けるように構成した
ので、可動接点の剥離防止と遮断性能の向上を図れると
ともに、開閉器の寿命向上に寄与できるものが得られる
効果がある。As described above, according to the invention of claim 1, it is generated between the fixed contact and the movable contact on the movable contactor and / or the arc runner facing the back surface of the movable contactor, and the movable contact is formed. Since it is configured to have a convex portion, a concave portion, or a hole that promotes the interruption of the arc that has moved to the back surface of the child, it is possible to prevent separation of the movable contact and improve the interruption performance, and to contribute to the life extension of the switch. There is an effect to be obtained.

【０１３０】また、請求項２の発明によれば、固定接触
子に固定接点近傍から可動接触子側に延び、さらに途中
から可動接触子側とは反対方向に延びるように設けられ
たアークランナーと、固定接点および可動接点の接離方
向に並行して配設され、上記固定接触子との近接部位の
上記接点の接離空間に対向突設されたコの字状突起を有
する金属消弧板とを設けるように構成したので、アーク
を可動接触子と金属消弧板との間、および金属消弧板と
固定接触子のアークランナーとの間に移行でき、さらに
金属消弧板と固定接触子のアークランナーとに流れる電
流が作る磁場によって、その間に移行されたアークを固
定接点と可動接点との接離空間から遠ざかる方向に駆動
でき、固定接触子の損傷を防止でき、かつ寿命を向上で
きるとともに、アーク電圧を高めて遮断性能を向上でき
るものが得られる効果がある。According to the second aspect of the invention, the arc runner is provided on the fixed contact so as to extend from the vicinity of the fixed contact to the movable contact side, and to extend in the opposite direction from the movable contact side. A metal arc extinguishing plate which is arranged in parallel with the contact and separation direction of the fixed contact and the movable contact, and has a U-shaped projection that is provided so as to face the contact and separation space of the contact at a portion near the fixed contact. Since it is configured so that the arc can be transferred between the movable contactor and the metal arc extinguishing plate, and between the metal arc extinguishing plate and the arc runner of the fixed contactor, the metal arc extinguishing plate and fixed contact Due to the magnetic field created by the current flowing through the child's arc runner, the arc transferred during that time can be driven away from the contact / separation space between the fixed contact and the movable contact, preventing damage to the fixed contact and improving the service life. While you can There is an effect that it can improve the breaking performance by increasing the click voltage.

【図面の簡単な説明】[Brief description of drawings]

【図１】請求項１の発明の実施例による開閉器の消弧機
構を示す側面図である。FIG. 1 is a side view showing an arc extinguishing mechanism of a switch according to an embodiment of the present invention.

【図２】請求項１の発明の他の実施例による開閉器の消
弧機構を示す斜視図である。FIG. 2 is a perspective view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図３】請求項１の発明の他の実施例による開閉器の消
弧機構を示す斜視図である。FIG. 3 is a perspective view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図４】請求項１の発明の他の実施例による開閉器の消
弧機構を示す側面図である。FIG. 4 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図５】請求項１の発明の他の実施例による開閉器の消
弧機構を示す側面図である。FIG. 5 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図６】請求項１の発明の他の実施例による開閉器の消
弧機構を示す側面図である。FIG. 6 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the present invention.

【図７】請求項１の発明の他の実施例による開閉器の消
弧機構を示す斜視図である。FIG. 7 is a perspective view showing an arc extinguishing mechanism of a switch according to another embodiment of the present invention.

【図８】請求項１の発明の他の実施例による開閉器の消
弧機構を示す斜視図である。FIG. 8 is a perspective view showing an arc extinguishing mechanism of a switch according to another embodiment of the present invention.

【図９】請求項１の発明の他の実施例による開閉器の消
弧機構を示す斜視図である。FIG. 9 is a perspective view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図１０】請求項１の発明の他の実施例による開閉器の
消弧機構を示す斜視図である。FIG. 10 is a perspective view showing an arc extinguishing mechanism of a switch according to another embodiment of the present invention.

【図１１】請求項１の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 11 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図１２】請求項１の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 12 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図１３】請求項１の発明の他の実施例による開閉器の
消弧機構を示す斜視図である。FIG. 13 is a perspective view showing an arc extinguishing mechanism of a switch according to another embodiment of the present invention.

【図１４】請求項１の発明の他の実施例による開閉器の
消弧機構を示す斜視図である。FIG. 14 is a perspective view showing an arc extinguishing mechanism of a switch according to another embodiment of the present invention.

【図１５】請求項１の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 15 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図１６】請求項１の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 16 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図１７】請求項１の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 17 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図１８】請求項１の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 18 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図１９】請求項１の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 19 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図２０】図１９における請求項１の発明の他の実施例
による開閉器の消弧機構を示す斜視図である。FIG. 20 is a perspective view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1 in FIG. 19;

【図２１】請求項１の発明の他の実施例による開閉器の
消弧機構を示す斜視図である。FIG. 21 is a perspective view showing an arc extinguishing mechanism of a switch according to another embodiment of the present invention.

【図２２】請求項１の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 22 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図２３】請求項１の発明の他の実施例による開閉器の
消弧機構を示す斜視図である。FIG. 23 is a perspective view showing an arc extinguishing mechanism of a switch according to another embodiment of the present invention.

【図２４】請求項１の発明の他の実施例による開閉器の
消弧機構を示す斜視図である。FIG. 24 is a perspective view showing an arc extinguishing mechanism of a switch according to another embodiment of the present invention.

【図２５】請求項１の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 25 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図２６】請求項１の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 26 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図２７】請求項１の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 27 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図２８】請求項１の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 28 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図２９】請求項１の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 29 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図３０】請求項１の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 30 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図３１】請求項１の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 31 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図３２】請求項１の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 32 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図３３】請求項１の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 33 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図３４】請求項１の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 34 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図３５】請求項１の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 35 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図３６】請求項１の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 36 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 1;

【図３７】請求項１の発明におけるアークランナーの他
の実施例を示す斜視図である。FIG. 37 is a perspective view showing another embodiment of the arc runner according to the invention of claim 1;

【図３８】請求項２の発明の実施例による開閉器の消弧
機構を示す側面図である。FIG. 38 is a side view showing an arc extinguishing mechanism of a switch according to the embodiment of the invention as claimed in claim 2;

【図３９】請求項２の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 39 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 2;

【図４０】請求項２の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 40 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 2;

【図４１】請求項２の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 41 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 2;

【図４２】請求項２の発明の他の実施例による開閉器の
消弧機構を示す側面図である。FIG. 42 is a side view showing an arc extinguishing mechanism of a switch according to another embodiment of the invention of claim 2;

【図４３】請求項１および請求項２の発明の特徴を合わ
せ持つ実施例による開閉器の消弧機構を示す側面図であ
る。43 is a side view showing an arc extinguishing mechanism of a switch according to an embodiment having the features of the inventions of claims 1 and 2. FIG.

【図４４】従来の電磁接触器を示す断面図である。FIG. 44 is a cross-sectional view showing a conventional electromagnetic contactor.

【図４５】従来の他の電磁接触器の消磁機構を示す側面
図である。FIG. 45 is a side view showing a degaussing mechanism of another conventional electromagnetic contactor.

【図４６】従来のさらに他の電磁接触器の消磁機構を示
す側面図である。FIG. 46 is a side view showing a degaussing mechanism of still another conventional electromagnetic contactor.

【符号の説明】[Explanation of symbols]

６ 可動接触子 ６Ａ 可動接点 ８ 固定接触子 ８Ａ 固定接点 ８Ｂ，１２ アークランナー １３ 金属消弧板 １３Ａ コの字状突起 １５Ａ 凸部 １５Ｂ 凹部 １５Ｃ 孔 6 movable contact 6A movable contact 8 fixed contact 8A fixed contact 8B, 12 arc runner 13 metal arc-extinguishing plate 13A U-shaped projection 15A convex 15B concave 15C hole

───────────────────────────────────────────────────── フロントページの続き (72)発明者 伊藤 直樹 名古屋市東区矢田南五丁目１番14号 三菱 電機株式会社名古屋製作所内 (72)発明者 市原 正博 名古屋市東区矢田南五丁目１番14号 三菱 電機株式会社名古屋製作所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Naoki Ito 5-1-14, Yanda-minami, Higashi-ku, Nagoya Mitsubishi Electric Corporation Nagoya Works (72) Inventor Masahiro Ichihara 5--14, Yada-minami, Higashi-ku, Nagoya Mitsubishi Electric Corporation Nagoya Works

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 固定接触子に接合された固定接点と、上
記固定接触子に対向して設けられた可動接触子と、該可
動接触子に接合されて、上記固定接点と接離可能な可動
接点と、該可動接触子の可動接点取付部の背面近傍およ
び上記可動接触子，固定接触子の各一端面にそれぞれ臨
むように設けられたアークランナーと、上記可動接触子
または／および該可動接触子の背面に対向する上記アー
クランナーに設けられて、上記固定接点および可動接点
間で発生し、かつ上記可動接触子の背面へ移行したアー
クの遮断を促進する凸部，凹部または孔とを備えた開閉
器。1. A fixed contact joined to a fixed contact, a movable contact provided to face the fixed contact, and a movable member joined to the movable contact and capable of coming into contact with and separating from the fixed contact. A contact, an arc runner provided so as to face the vicinity of the rear surface of the movable contact mounting portion of the movable contact and each end surface of the movable contact and the fixed contact, and the movable contact and / or the movable contact. A convex portion, a concave portion, or a hole provided on the arc runner facing the rear surface of the child to promote interruption of the arc generated between the fixed contact and the movable contact and transferred to the rear surface of the movable contact. Open switch. 【請求項２】 固定接触子に接合された固定接点と、上
記固定接触子に対向して設けられた可動接触子と、該可
動接触子に接合され、上記固定接点と接離可能な可動接
点と、上記固定接触子に上記固定接点近傍から可動接触
子側に延び、さらに途中から可動接触子側とは反対の方
向に延びるように設けられたアークランナーと、上記固
定接点および可動接点の接離方向に並行して配設され、
かつ上記固定接触子との近接部位の上記接離空間に対向
突設されたコの字状突起を有する金属消弧板とを備えた
開閉器。2. A fixed contact joined to the fixed contact, a movable contact provided to face the fixed contact, and a movable contact joined to the movable contact and separable from the fixed contact. An arc runner provided on the fixed contact so as to extend from the vicinity of the fixed contact to the movable contact side, and to extend in the opposite direction from the movable contact side to the fixed contact and the movable contact. It is arranged parallel to the separation direction,
A switch provided with a metal arc extinguishing plate having a U-shaped projection that is provided so as to oppose to the contacting / separating space in a position close to the fixed contactor.