JPH0620547A - Switch - Google Patents
SwitchInfo
- Publication number
- JPH0620547A JPH0620547A JP19744492A JP19744492A JPH0620547A JP H0620547 A JPH0620547 A JP H0620547A JP 19744492 A JP19744492 A JP 19744492A JP 19744492 A JP19744492 A JP 19744492A JP H0620547 A JPH0620547 A JP H0620547A
- Authority
- JP
- Japan
- Prior art keywords
- contact
- fixed contact
- conductor portion
- conductor
- fixed
- 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.)
- Granted
Links
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は、例えば、回路遮断器
や限流器または電磁接触器など、電流遮断時に容器内で
アークが発生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, such as a circuit breaker, a current limiter, or an electromagnetic contactor, in which an arc is generated in a container when the current is cut off.
【0002】[0002]
【従来の技術】図39は従来の開閉器として例えば回路
遮断器の開成時状態を示す側面図、図40は図39の回
路遮断器の接点開離直後の状態を示す側面図、図41は
図40の回路遮断器における可動接触子の最大開離状態
を示す側面図である。図に於て、1は回路遮断器の可動
接触子であり、この可動接触子1は基部の回動支点(回
動中心)14を(図40,図41参照)を中心にして回
動するように支持されている。2は前記可動接触子1の
一端(自由端部下面)に固着された可動接点、3は前記
可動接触子1の回動により可動接点2と接離する固定接
点、4はその固定接点3を一端に有する固定接触子であ
り、この固定接触子4の形状構成については後述する。
5は前記固定接触子4の他端に接続された電源側の端子
部である。6は消弧板で、前記可動接点2と前記固定接
点3との開離時にそれらの接点間に発生するアークを引
き延ばして冷却すべく機能する。7は前記消弧板6を保
持する消弧側板である。8は前記可動接触子1を回動さ
せる機構部であり、この機構部8は、電流検出部(図示
せず)を内蔵し、該電流検出部が短絡電流を検知するこ
とによって作動するようになっている。9は前記機構部
8を手動で操作するためのハンドル、10は負荷側の端
子部、11はその端子部10を前記可動接触子1に接続
する導体である。12はこれらの回路遮断器構成部品を
収納する容器、13はその容器12の壁部に設けられた
排気孔である。2. Description of the Related Art FIG. 39 is a side view showing a state in which a circuit breaker as a conventional switch is open, for example, FIG. 40 is a side view showing a state immediately after contact opening of the circuit breaker in FIG. 39, and FIG. It is a side view which shows the maximum open state of the movable contact in the circuit breaker of FIG. In the figure, reference numeral 1 denotes a movable contactor of a circuit breaker, and the movable contactor 1 rotates about a rotation fulcrum (rotation center) 14 of a base (see FIGS. 40 and 41). Is supported as. Reference numeral 2 denotes a movable contact fixed to one end (lower surface of the free end portion) of the movable contact 1, 3 is a fixed contact that comes in contact with and separates from the movable contact 2 by the rotation of the movable contact 1, and 4 is the fixed contact 3. The fixed contactor is provided at one end, and the shape configuration of the fixed contactor 4 will be described later.
Reference numeral 5 is a power source side terminal portion connected to the other end of the fixed contactor 4. Reference numeral 6 denotes an arc extinguishing plate, which functions to extend and cool the arc generated between the movable contact 2 and the fixed contact 3 when the movable contact 2 and the fixed contact 3 are separated. Reference numeral 7 is an arc-extinguishing side plate that holds the arc-extinguishing plate 6. Reference numeral 8 denotes a mechanism section for rotating the movable contactor 1. The mechanism section 8 has a built-in current detection section (not shown), and the current detection section operates by detecting a short-circuit current. Has become. Reference numeral 9 is a handle for manually operating the mechanism portion 8, 10 is a load side terminal portion, and 11 is a conductor for connecting the terminal portion 10 to the movable contact 1. Reference numeral 12 is a container for housing these circuit breaker components, and 13 is an exhaust hole provided in the wall of the container 12.
【0003】ここで、前記固定接触子4の形状構成につ
いて説明する。図39〜図41において、前記固定接触
子4は、電源側の端子部5が接続されて水平方向に延び
る導体部4aと、この導体部4aにおける前記端子部5
と反対側の端部に下方へ向け折曲形成された垂直な導体
部4bと、この導体部4bの下端から前記導体部4aと
は反対側の水平方向に延びる段差状下部の導体部4c
と、この導体部4cの先端から垂直方向に立ち上がる導
体部4dと、この導体部4dの上端から前記導体部4a
側に向って水平方向に延びる導体部4eとから成る形状
に一体形成され、前記導体部4e上に固定接点3が設け
られた構成となっている。The shape of the fixed contact 4 will be described below. 39 to 41, the fixed contactor 4 includes a conductor portion 4a to which the terminal portion 5 on the power source side is connected and which extends in the horizontal direction, and the terminal portion 5 in the conductor portion 4a.
A vertical conductor portion 4b bent downward at an end portion on the opposite side, and a stepped lower conductor portion 4c extending horizontally from the lower end of the conductor portion 4b on the opposite side to the conductor portion 4a.
And a conductor portion 4d rising vertically from the tip of the conductor portion 4c, and the conductor portion 4a from the upper end of the conductor portion 4d.
It is formed integrally with a conductor portion 4e extending horizontally toward the side, and the fixed contact 3 is provided on the conductor portion 4e.
【0004】このような形状構成の固定接触子4におい
て、段差状下部の導体部4cと固定接点3側とを接続し
ている導体部4dは、固定接点3の位置より可動接触子
1の可動接点2が固着されていない他端部側で且つ端子
部5の反対側に位置し、固定接点3を有する導体部4e
は、端子部5を有する導体部4aと同一水平面上にあっ
て、可動接点2と固定接点3相互の接点閉成時に該接点
接触面の位置より下方に位置している。かかる固定接触
子4は、その全体表面が絶縁されていない素肌露出状態
で使用されている。In the fixed contactor 4 having such a configuration, the conductor portion 4d connecting the lower conductor portion 4c with the fixed contact 3 side is movable from the position of the fixed contact 3 to the movable contact 1. The conductor portion 4e, which is located on the other end portion side where the contact point 2 is not fixed and is on the opposite side of the terminal portion 5 and has the fixed contact point 3
Is on the same horizontal plane as the conductor portion 4a having the terminal portion 5, and is located below the position of the contact surface when the movable contact 2 and the fixed contact 3 are closed. The fixed contactor 4 is used in an exposed state where the entire surface of the fixed contactor 4 is not insulated.
【0005】次に動作について説明する。図39の状態
において、固定接触子4の端子部5を電源に接続すると
共に、負荷側の端子部10を負荷に接続する。この状態
において、ハンドル9を矢印B方向に操作すると、機構
部8が動作して可動接触子1が基部の回動支点14(図
40,図41参照)を中心として下降回動することによ
り、可動接点2が固定接点3と接触した接点閉成状態と
なって、電力が電源から負荷に供給される。この状態
で、通電の信頼性を確保するために可動接点2は固定接
点3に規定の接触圧力で押えつけられている。Next, the operation will be described. In the state of FIG. 39, the terminal portion 5 of the fixed contactor 4 is connected to the power source, and the terminal portion 10 on the load side is connected to the load. In this state, when the handle 9 is operated in the direction of the arrow B, the mechanism portion 8 operates and the movable contact 1 is lowered and rotated about the rotation fulcrum 14 (see FIGS. 40 and 41) of the base portion. The movable contact 2 comes into contact with the fixed contact 3 to be in a closed state, and power is supplied from the power source to the load. In this state, the movable contact 2 is pressed against the fixed contact 3 with a prescribed contact pressure in order to ensure the reliability of energization.
【0006】ここで、回路遮断器より負荷側の回路で短
絡事故などが起こり、回路に大きな短絡電流が流れる
と、この大電流を前記機構部8内の電流検出部が検知し
て前記機構部8を作動させる。これによって、可動接触
子1が接点開離方向に回動することで可動接点2が固定
接点3から開離する。このような接点開離時には、図4
0および図41に示すように、可動接点2と固定接点3
との間にアークAが発生する。When a short circuit accident occurs in the circuit on the load side of the circuit breaker, and a large short circuit current flows in the circuit, the current detection section in the mechanism section 8 detects this large current and the mechanism section is detected. 8 is activated. As a result, the movable contact 1 is rotated in the contact opening direction so that the movable contact 2 is separated from the fixed contact 3. At the time of such contact opening, as shown in FIG.
0 and FIG. 41, the movable contact 2 and the fixed contact 3
Arc A is generated between and.
【0007】しかし、通常、短絡電流などの大電流が流
れると、可動接点2と固定接点3の接触面における電磁
反発力が非常に強くなり、前記可動接点2にかかってい
る接触圧力に打ち勝つために、可動接触子1は機構部8
の動作を待たずに接点開離方向に回動する。従って、そ
の回動により、可動接点2と固定接点3の開離が起こ
り、それらの接点2,3間に発生したアークAは、消弧
板6で引き延ばされて冷却される。この結果、アーク抵
抗が上昇し、短絡電流が小さく絞られる限流が起こり、
電流零点で前記アークAは消弧されて電流遮断が完了す
る。However, normally, when a large current such as a short-circuit current flows, the electromagnetic repulsive force at the contact surfaces of the movable contact 2 and the fixed contact 3 becomes very strong, and the contact pressure applied to the movable contact 2 is overcome. In addition, the movable contactor 1 has a mechanism portion 8
Rotate in the contact opening direction without waiting for the operation. Therefore, the rotation causes the movable contact 2 and the fixed contact 3 to be separated from each other, and the arc A generated between the contacts 2 and 3 is extended by the arc extinguishing plate 6 and cooled. As a result, the arc resistance rises, and a short-circuit current that limits the short-circuit current to a small level occurs,
At the current zero point, the arc A is extinguished and the current interruption is completed.
【0008】限流は、回路遮断器の保護機能を向上させ
るために非常に重要である。限流性能を高めるために
は、上述のようにアーク抵抗を増大させる必要がある。The current limiting is very important for improving the protection function of the circuit breaker. In order to improve the current limiting performance, it is necessary to increase the arc resistance as described above.
【0009】アーク抵抗を増大させるためにアークを引
き延ばす方法としてよく使われるのは、例えば特開昭6
0−49533号公報や特開平2−68831号公報に
示されているような形状の固定接触子を利用する方法で
ある。これらの公報に示された固定接触子の形状は、図
39〜図41に示した固定接触子4の形状と基本的には
同じである。この固定接触子4による電流経路は、図3
9〜図41において、電源側の端子部5から導体部4
a,4b,4c,4d,4eを順に経て固定接点3に至
る。このような電流経路において、固定接触子4の固定
接点3側の電流経路4eに流れる電流がアークAに及ぼ
す電磁力は、アークAを消弧板6方向へ引き延ばす力と
なる。この結果、アーク抵抗はより高くなり限流性能の
優れた回路遮断器が得られる。A method often used to extend the arc in order to increase the arc resistance is, for example, Japanese Patent Laid-Open No.
This is a method of using a fixed contactor having a shape as disclosed in Japanese Unexamined Patent Publication No. 0-49533 and Japanese Unexamined Patent Publication No. 2-68831. The shapes of the fixed contacts shown in these publications are basically the same as the shapes of the fixed contact 4 shown in FIGS. 39 to 41. The current path by the fixed contact 4 is shown in FIG.
9 to 41, from the power source side terminal portion 5 to the conductor portion 4
The fixed contact 3 is reached through a, 4b, 4c, 4d and 4e in order. In such a current path, the electromagnetic force exerted on the arc A by the current flowing through the current path 4e on the fixed contact 3 side of the fixed contact 4 is a force that extends the arc A toward the arc extinguishing plate 6. As a result, the arc resistance becomes higher and a circuit breaker with excellent current limiting performance can be obtained.
【0010】通常の交流遮断における限流性能を高める
には、上述のようにアーク抵抗を高めることが必要であ
るが、この場合、接点2,3が開離した直後の未だ電流
が最大値になる前に、アーク抵抗を高めなければならな
い。電流が大きくなった後にアーク抵抗を高めても、電
流の慣性効果のためになかなか電流は限流されない。か
えって、大電流で且つ抵抗が高いため、遮断器内で発生
するアークエネルギーが大きくなり、遮断器の損傷が激
しくなるだけである。従って、接点2,3が開離した直
後のアークを強い電磁力で大きく引き延ばし、急激にア
ーク抵抗を高めるような固定接触子形状が必要となる。In order to improve the current limiting performance in the usual AC interruption, it is necessary to increase the arc resistance as described above, but in this case, the current still reaches the maximum value immediately after the contacts 2 and 3 are opened. The arc resistance must be increased before it becomes. Even if the arc resistance is increased after the current becomes large, the current is not easily limited due to the inertia effect of the current. On the contrary, since the current is high and the resistance is high, the arc energy generated in the circuit breaker is large and the circuit breaker is only severely damaged. Therefore, it is necessary to have a fixed contact shape in which the arc immediately after the contacts 2 and 3 are separated is greatly extended by a strong electromagnetic force and the arc resistance is rapidly increased.
【0011】[0011]
【発明が解決しようとする課題】従来の固定接触子形状
を持つ開閉器は以上のように構成されているので、図4
0に示すように、接点2,3開離直後のアークAを電源
側の端子部5方向に引き延ばす電磁力を発生する固定接
触子4の電流経路は、電源側の端子部5を有する導体部
4aと同一面上で分離した固定接点3側の導体部4eだ
けであり、他の電流経路(導体部)4a,4b,4c,
4dは、全てアークAを前記端子部5と反対側に引き延
ばす電磁力を発生する。導体部4a,4cの電流は固定
接点3側の導体部4eと逆方向に流れ、これによって、
アークAを端子部5の方向と逆方向に引き延ばす電磁力
を発生させる結果となっている。また、導体部4bの電
流は、前記アークAの電流と逆方向のために反発し合
い、導体部4dの電流は前記アークAの電流と同一方向
であって引き合うため、アークAを端子部5の方向と逆
方向に引き延ばす結果となる。このため、前記電流経路
4eが発生するアークAを端子部5の方向に引き延ばす
電磁力は減少してしまう。したがって、従来の開閉器に
使用されている固定接触子4の形状では、該固定接触子
4に流れる電流の電磁力がアークを引き延ばすために効
果的に作用しないという問題点があった。Since the conventional switch having a fixed contactor shape is constructed as described above, FIG.
As shown in 0, the current path of the fixed contactor 4 that generates an electromagnetic force that extends the arc A immediately after the contacts 2 and 3 are separated toward the power source side terminal portion 5 is a conductor portion having the power source side terminal portion 5. Only the conductor portion 4e on the fixed contact 3 side separated on the same plane as 4a, other current paths (conductor portions) 4a, 4b, 4c,
4d all generate an electromagnetic force that extends the arc A to the side opposite to the terminal portion 5. The electric currents of the conductor portions 4a and 4c flow in the opposite direction to the conductor portion 4e on the fixed contact 3 side, whereby
As a result, an electromagnetic force that extends the arc A in the direction opposite to the direction of the terminal portion 5 is generated. In addition, the current of the conductor portion 4b repels each other because of the opposite direction of the current of the arc A, and the current of the conductor portion 4d is in the same direction as the current of the arc A and attracts each other. The result is stretching in the opposite direction of. Therefore, the electromagnetic force that extends the arc A generated by the current path 4e toward the terminal portion 5 is reduced. Therefore, in the shape of the fixed contactor 4 used in the conventional switch, there is a problem that the electromagnetic force of the current flowing through the fixed contactor 4 does not act effectively because it extends the arc.
【0012】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、接点開離直後の固定接触
子の全ての電流経路が、アークを端子部側に引き延ばす
電磁力を発生するようにして、急激にアーク電圧を立ち
上げることができ、且つ、可動接触子の開極距離が増大
した際には、アークが冷却されて、高いアーク電圧を発
生、維持でき、優れた限流性能を持つ開閉器を得ること
を目的とする。The invention of claim 1 has been made in order to solve the above problems, and all the current paths of the fixed contact immediately after the contact is opened have an electromagnetic force for extending the arc to the terminal side. As it is generated, the arc voltage can be rapidly raised, and when the contact opening distance of the movable contact increases, the arc is cooled and a high arc voltage can be generated and maintained, which is excellent. The purpose is to obtain a switch with current limiting performance.
【0013】請求項2の発明は、固定接触子の成形加工
が容易でありながら、その固定接触子が可動接触子の開
閉動作を妨げる恐れのない開閉器を得ることを目的とす
る。It is an object of the present invention to obtain a switch in which the fixed contactor can be easily formed, but the fixed contactor does not interfere with the opening / closing operation of the movable contactor.
【0014】請求項3の発明は、可動接触子の開閉動作
が固定接触子で妨げられるようなことがなく、しかも、
可動接触子の開極初期にはアークが冷却されて電流が限
流され、且つ、遮断動作後半には容器内圧力が低下し
て、該圧力による容器の破損が生じ難い開閉器を得るこ
とを目的とする。According to a third aspect of the invention, the opening / closing operation of the movable contact is not hindered by the fixed contact, and
In the initial stage of opening the movable contact, the arc is cooled and the current is limited, and in the latter half of the breaking operation, the pressure inside the container drops, and it is possible to obtain a switch in which the container is less likely to be damaged by the pressure. To aim.
【0015】請求項4の発明は、接点開離直後にアーク
電圧を、より一層急速に立ち上げること、電流遮断直前
のアーク長を効果的に長くすること、高いアーク電圧を
維持して短絡電流遮断時の通過エネルギーを小さく抑え
ること、などが可能な開閉器を得ることを目的とする。According to a fourth aspect of the present invention, the arc voltage is made to rise more rapidly immediately after the contact is opened, the arc length immediately before the current interruption is effectively lengthened, the high arc voltage is maintained, and the short-circuit current is maintained. The purpose of the present invention is to obtain a switch capable of suppressing the passing energy at the time of interruption to be small.
【0016】請求項5の発明は、固定接触子に接続され
た端子部の近傍でアークを補足する効果が増大し、アー
ク電圧維持作用が増大する開閉器を得ることを目的とす
る。It is an object of the invention of claim 5 to obtain a switch in which the effect of capturing an arc in the vicinity of the terminal portion connected to the fixed contact is increased, and the arc voltage maintaining action is increased.
【0017】請求項6の発明は、可動接触子の開極初期
のアーク電圧の立ち上がりを速めることができて、高い
アーク電圧を維持できると共に、固定接触子の曲げ加工
が容易に行える開閉器を得ることを目的とする。According to a sixth aspect of the present invention, there is provided a switch which can accelerate the rise of the arc voltage in the initial stage of opening the movable contact, maintain a high arc voltage, and easily bend the fixed contact. The purpose is to get.
【0018】請求項7の発明は、電磁力による可動接触
子の開極速度の立ち上がりを上昇させることができる開
閉器を得ることを目的とする。It is an object of the invention of claim 7 to obtain a switch capable of increasing the rise of the contact opening speed of the movable contact due to the electromagnetic force.
【0019】請求項8〜請求項10の発明は、固定接触
子の表面でアークを引き延ばす磁場成分を増大させるこ
とができ、また、通電容量が大きな開閉器の固定接触子
であっても、その固定接触子の加工が容易な開閉器を得
ることを目的とする。According to the invention of claims 8 to 10, it is possible to increase the magnetic field component for extending the arc on the surface of the fixed contact, and even if the fixed contact of the switch has a large current carrying capacity, The purpose of the present invention is to obtain a switch in which fixed contacts can be easily processed.
【0020】請求項11の発明は、アーク電圧の立ち上
がりを改善できると共に、高いアーク電圧を維持できる
開閉器を得ることを目的とする。It is an object of the invention of claim 11 to obtain a switch which can improve the rise of the arc voltage and can maintain a high arc voltage.
【0021】請求項12の発明は、大電流領域において
も、端子部側から接点間にアークが戻るようなことがな
く、高いアーク電圧を維持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 maintain a high arc voltage without causing an arc to return from the terminal side to the contact even in a large current region.
【0022】請求項13の発明は、アーク引き延ばし作
用が一層増加してアーク電圧が上昇し、機構部側への熱
流の流入を低減できる開閉器を得ることを目的とする。It is an object of the invention of claim 13 to obtain a switch which can further reduce the inflow of heat flow to the mechanism portion by further increasing the arc extending action and increasing the arc voltage.
【0023】請求項14の発明は、比較的小さな電流遮
断時においても、可動接触子を最大開極距離に素早く到
達させ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 invention of claim 14 to obtain a switch which can quickly reach the maximum contact distance of the movable contactor even when the current is cut off in a relatively small amount.
【0024】請求項15の発明は、アーク引き延ばし作
用および可動接触子を開極させる電磁力が増大し、アー
クスポットの大きさを制限できる開閉器を得ることを目
的とする。An object of the fifteenth aspect of the present invention is to provide a switch which can increase the arc extending action and the electromagnetic force for opening the movable contact to limit the size of the arc spot.
【0025】請求項16の発明は、機構部側への熱流の
流入を減少できると共に、電流遮断後に再投入不能とな
るのを防止でき、且つ、アークの冷却効果を高めること
ができる開閉器を得ることを目的とする。According to a sixteenth aspect of the present invention, there is provided a switchgear capable of reducing the inflow of heat flow into the mechanism portion side, preventing the inability to be turned on again after the current is cut off, and enhancing the arc cooling effect. The purpose is to get.
【0026】請求項17の発明は、アークによる可動接
触子の溶断を防止できると共に、金属蒸気の発生量が減
少して絶縁回復の遅れを防止できる開閉器を得ることを
目的とする。It is an object of the invention of claim 17 to provide a switch which can prevent melting of the movable contact due to an arc and can prevent a delay in insulation recovery due to a decrease in the amount of metal vapor generated.
【0027】請求項18の発明は、アークの影響による
可動接点の脱落を防止でき、且つ、その可動接触子の上
下方向の機械的強度を上昇させ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 prevent the movable contact from dropping due to the influence of an arc and can increase the vertical mechanical strength of the movable contact. .
【0028】請求項19の発明は、固定接点面上および
その上方近傍の空間に生じるアーク引き延ばし力を増大
させることができて、アーク電圧の立ち上がりを改善で
きると共に、十分な機械敵強度が得られない場合の固定
接触子の変形を防止できる開閉器を得ることを目的とす
る。According to the nineteenth aspect of the present invention, the arc stretching force generated in the space on the fixed contact surface and in the vicinity above the fixed contact surface can be increased, the rise of the arc voltage can be improved, and sufficient mechanical enemy strength can be obtained. An object of the present invention is to obtain a switch that can prevent the deformation of the fixed contact when it is not present.
【0029】請求項20および請求項21の発明は、固
定接点面上およびその上方近傍の空間に生じるアーク引
き延ばし力を増大させることができて、アーク電圧の立
ち上がりを改善でき、また、固定接点より端子部側に移
動した電流遮断直前の固定接触子側のアークスポットお
よびその上方近傍の空間のアークを引き延ばす磁場成分
をほぼ最大にできる開閉器を得ることを目的とする。According to the invention of claims 20 and 21, the arc stretching force generated in the space on the fixed contact surface and in the vicinity thereof can be increased, the rise of the arc voltage can be improved, and the fixed contact can be improved. An object of the present invention is to obtain a switch capable of almost maximizing a magnetic field component extending an arc spot on the fixed contact side immediately before the interruption of a current that has moved to the terminal side and a space in the vicinity of the arc spot.
【0030】[0030]
【課題を解決するための手段】請求項1に係る開閉器
は、一端部に可動接点を有する可動接触子と、この可動
接触子の開閉動作で前記可動接点と接離可能な固定接点
を一端部に有する固定接触子と、この固定接触子の他端
部に接続する端子部とを備えた開閉器において、接点閉
成状態の前記可動接点が前記固定接点から開離する方向
を上方とした時、前記固定接触子を、前記端子部と接続
する第1導体部、前記固定接点を有する第2導体部、及
び第1導体部と第2導体部を上下方向に接続する第3導
体部で構成し、第3導体部を前記固定接点の位置より可
動接触子の可動接点が設けられていない他端部側で且つ
前記端子部の反対側に配置し、第1導体部を、前記接点
閉成時の該接点接触面より上方に配置すると共に、前記
接点開成時に前記可動接点の接触面より下方に配置し、
前記接点開成時に前記可動接点表面から見渡せる前記第
1導体部の部位を絶縁物で被覆したものである。According to a first aspect of the present invention, there is provided a switch having a movable contact having a movable contact at one end and a fixed contact which can be brought into contact with and separated from the movable contact by opening and closing the movable contact. In a switch equipped with a fixed contactor provided in a part and a terminal part connected to the other end of the fixed contactor, the direction in which the movable contact in the contact closed state is separated from the fixed contact is upward. At this time, the fixed contact is composed of a first conductor portion that connects to the terminal portion, a second conductor portion that has the fixed contact, and a third conductor portion that vertically connects the first conductor portion and the second conductor portion. The third conductor portion is arranged on the other end side of the movable contact, where the movable contact is not provided, and on the opposite side of the terminal portion from the position of the fixed contact, and the first conductor portion is closed by the contact. The contact is placed above the contact surface when the contact is made, and the contact is opened when the contact is opened. Disposed below the contact surface of the contacts,
A portion of the first conductor portion that can be seen from the surface of the movable contact when the contact is opened is covered with an insulator.
【0031】請求項2に係る開閉器は、固定接触子が、
ほぼU字形状をなした接続導体部位を有し、そのU字形
状の一端部の内側に固定接点を固着し、且つ、前記U字
形状の他端部に端子部を接続したもので、前記固定接点
の固着面より上方に位置する接続導体の部位には、前記
固定接触子に対する可動接触子の開閉動作を許容するた
めのスリットを設けたものである。In the switch according to claim 2, the fixed contact is
A connecting conductor portion having a substantially U shape, a fixed contact fixed to the inside of one end portion of the U shape, and a terminal portion connected to the other end portion of the U shape; A slit for allowing the opening / closing operation of the movable contact with respect to the fixed contact is provided in a portion of the connection conductor located above the fixing surface of the fixed contact.
【0032】請求項3に係る開閉器は、可動接触子が開
閉動作で描く軌跡の平面の左右どちらか一方で、前記固
定接点より上方に位置する第1導体部が形成された固定
接触子構成としたものである。A switch according to a third aspect of the present invention is a fixed contactor structure in which a first conductor portion located above the fixed contact is formed on either the left or right of the plane of the locus drawn by the movable contactor during the opening and closing operation. It is what
【0033】請求項4に係る開閉器は、固定接触子に接
続する端子部を、前記第1導体部と面一、または、その
第1導体部より上方、もしくは、前記第1導体部より下
方に位置するように形成し、前記第1導体部の下方に位
置する端子部は、接点閉成状態の時の接点接触面より上
方に位置させたものである。In the switch according to a fourth aspect of the present invention, the terminal portion connected to the fixed contact is flush with the first conductor portion or above the first conductor portion or below the first conductor portion. And the terminal portion located below the first conductor portion is located above the contact contact surface in the contact closed state.
【0034】請求項5に係る開閉器は、前記端子部を、
固定接点の第1導体部に接続されるリード部と、外部電
路に接続される端子板部とで構成し、前記端子板部を接
点閉成状態の時の接点接触面より下方に配置したもので
ある。According to a fifth aspect of the present invention, in the switch, the terminal portion is
A fixed contact composed of a lead portion connected to the first conductor portion and a terminal plate portion connected to an external electric circuit, the terminal plate portion being arranged below a contact contact surface when the contact is closed. Is.
【0035】請求項6に係る開閉器は、端子部と固定接
触子とを接続する第1導体部に、鈍角で且つ固定接点と
反対側に凸の屈曲部が設けられ、前記第1導体部の前記
屈曲部より端子部と反対側の部位が固定接点を有する第
2導体部とほぼ平行している固定接触子の形状としたも
のである。According to a sixth aspect of the present invention, in the switch, the first conductor portion connecting the terminal portion and the fixed contact is provided with a bent portion having an obtuse angle and opposite to the fixed contact, and the first conductor portion is provided. The shape of the fixed contact is such that the portion on the side opposite to the terminal portion from the bent portion is substantially parallel to the second conductor portion having the fixed contact.
【0036】請求項7に係る開閉器は、端子部と固定接
点を接続する接続導体のうち、固定接点にすぐ接続され
る部分で、固定接点の位置より端子部と反対側に、閉性
時の可動接触子とほぼ平行な部分を持つ固定接触子の形
状としたものである。A switch according to a seventh aspect of the present invention is a portion of a connecting conductor which connects a terminal portion and a fixed contact, which is directly connected to the fixed contact, and is located on the side opposite to the terminal portion from the position of the fixed contact when the switch is closed. The shape of the fixed contact has a portion substantially parallel to the movable contact.
【0037】請求項8に係る開閉器は、端子部と固定接
触子とを接続する第1導体部に、鈍角で且つ固定接点の
反対側に凸の屈曲部が設けられ、前記第1導体部の前記
屈曲部より端子部側の部位を固定接点が固着された第2
導体部とほぼ平行させてなる固定接触子の形状としたも
のである。In a switch according to an eighth aspect of the present invention, the first conductor portion connecting the terminal portion and the fixed contact is provided with a bent portion having an obtuse angle and opposite to the fixed contact, and the first conductor portion is provided. A second portion having a fixed contact fixed to a portion closer to the terminal portion than the bent portion of
The shape of the fixed contact is substantially parallel to the conductor.
【0038】請求項9に係る開閉器は、第1導体部と第
3導体部を鈍角の屈曲部を介して連続させると共に、第
3導体部と第2導体部を鋭角の屈曲部を介して連続さ
せ、前記鈍角および前記鋭角が固定接点と反対側に凸に
なるように配した固定接触子の形状としたものである。In a switch according to a ninth aspect, the first conductor portion and the third conductor portion are continuous with each other through an obtuse-angled bent portion, and the third conductor portion and the second conductor portion are connected through an acute-angled bent portion. The shape of the fixed contactor is continuous and arranged so that the obtuse angle and the acute angle are convex on the side opposite to the fixed contact.
【0039】請求項10に係る開閉器は、固定接触子の
第3導体部を端子部と反対側に凸の曲線で形成したもの
である。In the switch according to the tenth aspect of the present invention, the third conductor portion of the fixed contact is formed as a convex curve on the side opposite to the terminal portion.
【0040】請求項11に係る開閉器は、固定接触子の
第1導体部に固定接触子側へ凸の突出部を設け、この突
出部の頂点を固定接点より端子部側に位置させたもので
ある。A switch according to an eleventh aspect of the present invention is one in which a protruding portion protruding toward the fixed contact is provided on the first conductor portion of the fixed contact, and the apex of the protruding portion is positioned closer to the terminal portion than the fixed contact. Is.
【0041】請求項12に係る開閉器は、固定接触子に
おいて、固定接点の接触面が上下方向の垂線より端子部
側に向くように、第2導体部の固定接点が設けられた一
端部を他端部より下方に位置させたものである。In the switch according to the twelfth aspect of the present invention, in the fixed contact, one end portion of the second conductor portion provided with the fixed contact is disposed so that the contact surface of the fixed contact faces the terminal portion side from the vertical line in the vertical direction. It is located below the other end.
【0042】請求項13に係る開閉器は、第2導体部の
固定接点が固着されている導体部位が、第2導体部の第
3導体部と連続する端部より上方に位置するように固定
接触子を形成したものである。In the switch according to the thirteenth aspect of the present invention, the switch is fixed such that the conductor portion of the second conductor portion to which the fixed contact is fixed is located above the end portion of the second conductor portion which is continuous with the third conductor portion. The contactor is formed.
【0043】請求項14に係る開閉器は、第1導体部と
第3導体部とが鋭角の屈曲部を介して連続し、且つ、第
3導体部と第2導体部とが鈍角の屈曲部を介して連続
し、前記鈍角および前記鋭角が固定接点と反対側に凸と
なるように固定接触子を形成したものである。In the switch according to the fourteenth aspect, the first conductor portion and the third conductor portion are continuous with each other through an acute-angled bend portion, and the third conductor portion and the second conductor portion are obtuse-angled bend portions. And the fixed contact is formed so that the obtuse angle and the acute angle are convex on the side opposite to the fixed contact.
【0044】請求項15に係る開閉器は、固定接触子に
おいて、可動接触子が開閉動作により描く軌跡を含む面
上に、第2導体部の中心線が位置し、且つ、前記第2導
体部の第3導体部側の一端部の幅より、固定接点が固着
されている他端部側の幅を小さく形成したものである。According to a fifteenth aspect of the present invention, in the switch of the fixed contact, the center line of the second conductor portion is located on a plane including a locus drawn by the movable contact by the opening and closing operation, and the second conductor portion. The width on the other end side to which the fixed contact is fixed is formed to be smaller than the width on the one end side on the side of the third conductor.
【0045】請求項16に係る開閉器は、可動接触子の
開閉動作を妨げないように、可動接触子が描く軌跡を含
む面に沿ったスリットを有する第1導体部を備え、この
第1導体部を前記軌跡を含む面に対してほぼ対称な形成
すると共に、前記スリットの左右の導体部をほぼ平行に
形成するか、または、前記スリットの端子部と反対側の
幅を端子部側の幅より小さく形成し、あるいは、前記ス
リットの端子部側の幅を端子部と端子部と反対側の幅よ
り小さく形成した固定接触子の形状としたものである。A switch according to a sixteenth aspect of the present invention includes a first conductor portion having a slit along a plane including a locus drawn by the movable contactor so as not to hinder the opening / closing operation of the movable contactor. Part is formed substantially symmetrical with respect to the plane including the locus, and the left and right conductor parts of the slit are formed substantially parallel to each other, or the width of the slit on the side opposite to the terminal part is the width of the terminal part side. The width of the fixed contact is formed smaller or the width of the slit on the side of the terminal portion is smaller than the width on the side opposite to the terminal portion and the terminal portion.
【0046】請求項17に係る開閉器は、可動接点が固
着されていない他端部側で、且つ、前記可動接点のすぐ
横の可動導体の部位を、前記可動接点の固着面より後退
させた可動接触子構成としたものである。According to a seventeenth aspect of the present invention, in the switchgear, the movable conductor portion on the other end side where the movable contact is not fixed, and right next to the movable contact is set back from the fixed surface of the movable contact. It has a movable contact structure.
【0047】請求項18に係る開閉器は、可動接触子が
開閉動作で描く軌跡を含む面に垂直な方向を左右方向と
した時、可動接触子の一部を成す可動導体の左右方向の
幅を、可動接点の幅より小さく構成したものである。In the switch according to the eighteenth aspect, when the direction perpendicular to the plane including the locus of the movable contact drawn by the opening / closing operation is the left / right direction, the width in the left / right direction of the movable conductor forming a part of the movable contact. Is smaller than the width of the movable contact.
【0048】請求項19に係る開閉器は、可動接触子が
開閉動作で描く軌跡を含む面に沿ったスリットを有する
第1導体部を備え、固定接点表面の中心点P0を含み、
かつ前記軌跡を含む面および前記第1導体部の電流路に
垂直な断面において、前記スリット左右の各々の第1導
体部断面の重心P1とP2を結ぶ線と、前記中心点P0
と前記重心P1および重心P2を各々結ぶ線の成す前記
軌跡を含む面側の角度θ1とθ2が45゜以上になるよ
うに固定接触子を形成したものである。A switch according to a nineteenth aspect is provided with a first conductor portion having a slit along a surface including a locus drawn by the movable contact during the opening / closing operation, and including a center point P0 of a fixed contact surface,
In addition, in a cross section perpendicular to the plane including the locus and the current path of the first conductor portion, a line connecting the centers of gravity P1 and P2 of the cross sections of the first conductor portions on the left and right of the slit, and the center point P0.
And the fixed contacts are formed such that the angles θ1 and θ2 on the surface side including the locus formed by the lines connecting the center of gravity P1 and the center of gravity P2 are 45 ° or more.
【0049】請求項20に係る開閉器は、可動接触子が
開閉動作で描く軌跡を含む面に沿ったスリットを有する
第1導体部を備え、固定接点表面の中心点P0を含み、
かつ前記軌跡を含む面および前記第1導体部の電流路に
垂直な断面において、前記スリット左右の各々の第1導
体部断面の重心P1とP2を各々結ぶ線の成す前記軌跡
を含む面側の角度θ1とθ2が45゜未満になるように
固定接触子を形成したものである。A switch according to a twentieth aspect of the invention is provided with a first conductor portion having a slit along a surface including a locus drawn by the movable contact during the opening / closing operation, and including a center point P0 of a fixed contact surface,
In the plane including the locus and the cross section perpendicular to the current path of the first conductor portion, the plane side including the locus formed by the lines connecting the centers of gravity P1 and P2 of the cross sections of the first conductor portions on the left and right sides of the slit, respectively. The fixed contacts are formed so that the angles θ1 and θ2 are less than 45 °.
【0050】請求項21に係る開閉器は、可動接触子が
開閉動作で描く軌跡を含む面に沿ったスリットを有する
第3導体部を備え、前記軌跡を含む面および前記第3導
体部の電流路に垂直な断面において、前記スリット左右
の各々の第3導体部断面の重心P1とP2を各々結ぶ線
と、固定接点表面の中心点P0から上方に伸ばした垂線
が前記断面と交わる点PO1 と前記重心P1および重心
P2を各々結ぶ線の成す前記軌跡を含む面側の角度θ1
とθ2が45゜以上、または45゜未満になるように固
定接触子を形成したものである。A switch according to a twenty-first aspect is provided with a third conductor portion having a slit along a surface including a locus drawn by the movable contact in the opening / closing operation, and the current of the surface including the locus and the third conductor portion. In a cross section perpendicular to the path, a line connecting the centers of gravity P1 and P2 of the cross sections of the respective third conductors on the left and right of the slit and a point PO 1 where a perpendicular line extending upward from the center point P0 of the fixed contact surface intersects with the cross section And the angle θ1 on the plane side including the locus formed by the lines connecting the center of gravity P1 and the center of gravity P2.
And the fixed contactor is formed so that θ2 is 45 ° or more or less than 45 °.
【0051】[0051]
【作用】請求項1の発明における開閉器は、接点開離直
後にアークが固定接触子を構成する導体部を流れる全て
の電流により端子部方向に引き延ばされ、その後もアー
クが第1導体部を覆う絶縁物に押し付けられることによ
り、高いアーク電圧を発生させて維持することができ
る。In the switch according to the invention of claim 1, immediately after the contact is opened, the arc is extended toward the terminal portion by all the current flowing through the conductor portion constituting the fixed contact, and thereafter the arc is the first conductor. A high arc voltage can be generated and maintained by being pressed against the insulator covering the part.
【0052】請求項2の発明における開閉器は、固定接
触子が略U字形状をなしていることにより、その固定接
触子の成形加工が頗る容易である。また、前記固定接触
子において、固定接点の固着面より上方に位置する導体
部位に可動接触子の開閉動作を許容するスリットを設け
たことにより、前記固定接点に対する前記可動接触子の
開閉動作が前記固定接触子によって妨げられるようなこ
ともない。In the switch according to the second aspect of the invention, since the fixed contact has a substantially U-shape, the fixed contact can be easily molded. Further, in the fixed contact, by providing a slit for allowing the opening / closing operation of the movable contact at a conductor portion located above the fixing surface of the fixed contact, the opening / closing operation of the movable contact with respect to the fixed contact is performed as described above. It is not disturbed by the fixed contacts.
【0053】請求項3の発明における開閉器は、固定接
触子の第1導体部を、可動接触子が開閉動作で描く軌跡
の平面の左右どちら一方で固定接点の上方位置に形成し
たので、前記可動接触子の開閉動作が前記固定接触子に
よって妨げられるようなことはない。また、可動接触子
の開極初期には接点間に発生したアークが第1導体部を
覆う絶縁物で冷却されることによって電流が限流され
る。さらに、遮断動作後半にはアークが絶縁物から遠ざ
かり容器内で発生する圧力が低下するので、遮断動作時
に容器内で発生する圧力による破損が起こり難い。In the switch according to the invention of claim 3, the first conductor portion of the fixed contact is formed above the fixed contact on either the left or right of the plane of the locus drawn by the movable contact during the opening and closing operation. The opening / closing operation of the movable contact is not hindered by the fixed contact. Further, in the initial stage of opening the movable contactor, the arc generated between the contacts is cooled by the insulator covering the first conductor portion, so that the current is limited. Further, since the arc moves away from the insulator in the latter half of the breaking operation and the pressure generated in the container decreases, damage due to the pressure generated in the container during the breaking operation does not easily occur.
【0054】請求項4の発明における開閉器は、端子部
を第1導体部と面一もしくは上方に配置したので、端子
部を流れる電流により接点開離直後にアークを引き延ば
し、アーク電圧をより急速に立ち上げることができる。
また、端子部を第1導体部より上方に配置すると、遮断
直前のアーク長を効果的に長くすることができる。ま
た、端子部もしくは端子部の一部を、第1導体部より下
方に配置したので、高いアーク電圧を維持でき、短絡電
流遮断時の通過エネルギーを小さく抑えることができ
る。さらに、端子部を第1導体部より下方で且つ固定接
点接触面より上方に配置すると、端子部の電流によって
固定接点表面近傍のアークを引き延ばすことができる。In the switch according to the invention of claim 4, since the terminal portion is arranged flush with or above the first conductor portion, the arc is extended immediately after the contact is opened by the electric current flowing through the terminal portion, and the arc voltage is further increased. Can be set up.
Further, by disposing the terminal portion above the first conductor portion, the arc length immediately before interruption can be effectively lengthened. In addition, since the terminal portion or a part of the terminal portion is arranged below the first conductor portion, a high arc voltage can be maintained, and the passing energy at the time of short-circuit current interruption can be suppressed to be small. Further, when the terminal portion is arranged below the first conductor portion and above the fixed contact contact surface, the arc in the vicinity of the fixed contact surface can be extended by the current of the terminal portion.
【0055】請求項5の発明における開閉器は、端子部
が固定接点接触面より下方に位置しているので、端子部
近傍でアークを補足する効果が増大し、アーク電圧を維
持する作用が増大する。In the switch according to the invention of claim 5, since the terminal portion is located below the fixed contact surface, the effect of catching the arc in the vicinity of the terminal portion is increased, and the action of maintaining the arc voltage is increased. To do.
【0056】請求項6の発明における開閉器は、端子部
が第1導体部の下方に位置するように第1導体部に固定
接点と反対側に凸の鈍角な屈曲部を設けたので、開極初
期のアーク電圧の立ち上がりを速められ、高いアーク電
圧を維持できると共に、固定接触子の曲げ加工が容易と
なる。In the switch according to the invention of claim 6, the first conductor portion is provided with the convex obtuse bent portion on the side opposite to the fixed contact so that the terminal portion is located below the first conductor portion. The rise of the arc voltage in the very initial stage can be accelerated, a high arc voltage can be maintained, and the fixed contact can be easily bent.
【0057】請求項7の発明における開閉器は、第2導
体部の固定接点の位置より端子部と反対側の部位に、接
点閉成時の可動接触子と略平行な部分を持つ固定接触子
構成としたので、電磁力による可動接触子の開極速度の
立ち上がりが上昇する。According to a seventh aspect of the invention, the switch has a fixed contact having a portion of the second conductor portion opposite to the terminal portion from the position of the fixed contact and having a portion substantially parallel to the movable contact when the contact is closed. Since it is configured, the rising of the contact opening speed of the movable contact due to the electromagnetic force is increased.
【0058】請求項8〜請求項10の発明における開閉
器は、第1導体部に鋭角かつ固定接点の反対側に凸の屈
曲部を設けた場合、第1導体部と第3導体部を鈍角の屈
曲部を介して連続させた場合、第3導体部を端子部と反
対側に凸の曲線で構成した場合の何れの場合であって
も、固定接点表面でのアークを引き延ばす磁場成分を増
大させることができる。また、上述のように、第3導体
部を端子部と反対側に凸の曲線で構成した場合、通電容
量が大きな開閉器の固定接触子であっても容易に加工す
ることが可能となる。In the switch according to the inventions of claims 8 to 10, when the first conductor portion is provided with an acute angle and a convex bent portion on the opposite side of the fixed contact, the first conductor portion and the third conductor portion are obtuse angles. In both cases, the magnetic field component that extends the arc on the fixed contact surface is increased, regardless of whether the third conductor part is formed as a convex curve on the side opposite to the terminal part when it is continuous through the bent part Can be made. In addition, as described above, when the third conductor portion is formed of a curved curve on the side opposite to the terminal portion, even a fixed contact of a switch having a large current carrying capacity can be easily processed.
【0059】請求項11の発明における開閉器は、第1
導体部に固定接触子側に凸の突出部を設け、この突出部
の頂点を固定接点より端子部側に配置したことにより、
アーク電圧の立ち上がりを改善できると共に、高いアー
ク電圧を維持できる。The switch according to the invention of claim 11 is the first
By providing a protruding portion on the fixed contact side of the conductor portion and disposing the apex of this protruding portion on the terminal portion side from the fixed contact,
It is possible to improve the rise of the arc voltage and maintain a high arc voltage.
【0060】請求項12の発明における開閉器は、固定
接点の接触面が上下方向の垂線より端子部側に向くよう
に配置したので、アークの接点から吹き出す力が大きく
なる大電流領域においても端子部側から接点間にアーク
が戻ることがなく、高いアーク電圧を維持できるように
なる。In the switch of the twelfth aspect of the invention, since the contact surface of the fixed contact is arranged to face the terminal portion side with respect to the vertical line in the vertical direction, the terminal is maintained even in a large current region in which the force blown out from the arc contact is large. It is possible to maintain a high arc voltage without the arc returning from the part side to the contact point.
【0061】請求項13の発明における開閉器は、第2
導体部の固定接点が固着されている導体部位が、第2導
体部の第3導体部と連続する端部より上方に位置するよ
うに構成したので、第3導体部の電流によるアーク引き
延ばし作用が増加すると共に、端子部側へ押し出された
アークへの容器からの圧力反射を妨げるので、アークが
一層引き延ばされ易くなり、アーク電圧が上昇する。ま
た、機構部側への熱流の流入を低減することができる。The switch according to the invention of claim 13 is the second switch.
Since the conductor portion to which the fixed contact of the conductor portion is fixed is located above the end portion of the second conductor portion which is continuous with the third conductor portion, the arc extending action by the current of the third conductor portion is prevented. As the number of arcs increases, the reflection of pressure from the container to the arc extruded toward the terminal portion is hindered, so that the arc is more easily elongated and the arc voltage increases. In addition, it is possible to reduce the inflow of heat flow into the mechanism section side.
【0062】請求項14の発明における開閉器は、第1
導体部と第3導体部を鋭角の屈曲部を介して連続させる
ことにより、可動接触子にかかる開極を促進する電磁力
を開極動作後半まで可動接触子に与えることができるよ
うにしたので、比較的小さな電流遮断動作時にも最大開
極距離に素早く到達できる。The switch according to the invention of claim 14 is the first switch
By making the conductor portion and the third conductor portion continuous through the bent portion at an acute angle, it is possible to apply an electromagnetic force that promotes the opening of the movable contact to the movable contact until the latter half of the opening operation. The maximum opening distance can be reached quickly even during relatively small current interruption operations.
【0063】請求項15の発明における開閉器は、可動
接触子が描く軌跡を含む面上に、第2導体部の中心線が
位置するようにし、さらに、前記第2導体部の第3導体
部側の一端部の幅より固定接点が固着されている他端部
を小さくして電流を中心線上に集中するようにしたの
で、アークを引き延ばす作用および可動接触子を開極さ
せる電磁力が増大すると共に、アークスポットの大きさ
を制限できる。In the switch according to the fifteenth aspect of the present invention, the center line of the second conductor portion is located on the plane including the locus drawn by the movable contact, and the third conductor portion of the second conductor portion is located. Since the other end where the fixed contact is fixed is made smaller than the width of the one end on the side to concentrate the current on the center line, the action of extending the arc and the electromagnetic force for opening the movable contact increases. At the same time, the size of the arc spot can be limited.
【0064】請求項16の発明における開閉器は、可動
接触子の開閉動作を妨げないようにスリット(切欠部)
を有し、且つ、略左右対称な第1導体部を備え、スリッ
トの端子部と反対側の幅を端子部側の幅よりも小さくし
たので、機構部側への熱流を減少させることができ、遮
断動作後に再投入不能となることを防げる。一方、スリ
ットの端子部側の幅を端子部と反対側の幅より小さくす
ると、絶縁物による冷却効果を高めることができる。In the switch of the sixteenth aspect of the present invention, the slit (notch portion) is provided so as not to interfere with the opening / closing operation of the movable contact.
Since the width of the slit on the side opposite to the terminal portion is smaller than the width on the terminal portion side, the heat flow to the mechanism portion can be reduced. , It can be prevented that the power cannot be turned on again after the breaking operation. On the other hand, if the width of the slit on the terminal portion side is smaller than the width on the side opposite to the terminal portion, the cooling effect of the insulator can be enhanced.
【0065】請求項17の発明における開閉器は、可動
接触子より可動導体の可動接点が固着されていない他端
部側で、且つ、可動接点のすぐ横の可動導体の部位を、
可動接点の固着面より後退させたので、アークが前記部
位に触れ難くなり、可動接触子の溶断を防ぐことができ
ると共に、金属蒸気の発生量が減少するので、絶縁回復
の遅れを防げる。According to a seventeenth aspect of the present invention, in the switch, the movable conductor is located on the other end side where the movable contact of the movable conductor is not fixed to the movable contactor, and the movable conductor is located immediately beside the movable contact.
Since it is set back from the fixed surface of the movable contact, it is difficult for the arc to touch the above-mentioned portion, the melting of the movable contact can be prevented, and the amount of metal vapor generated is reduced, so that delay in insulation recovery can be prevented.
【0066】請求項18の発明における開閉器は、可動
接触子の一部を成す可動導体の左右方向の幅を可動接点
の幅より小さく構成したことにより、可動接点の固着面
がアークから隠れるので、可動接点の脱落を防げると共
に、可動接触子の上下方向の機械的強度が増大する。In the switch according to the eighteenth aspect of the present invention, since the width of the movable conductor forming a part of the movable contact in the left-right direction is smaller than the width of the movable contact, the fixed surface of the movable contact is hidden from the arc. The movable contact can be prevented from falling off, and the vertical mechanical strength of the movable contact increases.
【0067】請求項19の発明における開閉器は、可動
接触子が開閉動作で描く軌跡を含む面に沿ったスリット
を有する第1導体部を備え、固定接点表面の中心点P0
を含み、かつ前記軌跡を含む面および前記第1導体部の
電流路に垂直な断面において、前記スリット左右の各々
の第1導体部断面の重心P1とP2を結ぶ線と、前記中
心点P0と前記重心P1および重心P2を各々結ぶ線の
成す前記軌跡を含む面側の角度θ1とθ2が45゜以上
になるように配置したので、固定接点面上およびその上
方近傍の空間のアークを引き延ばす力を増大させること
ができ、アーク電圧の立ち上がりを改善できる。A switch according to a nineteenth aspect of the present invention is provided with a first conductor portion having a slit along a plane including a locus drawn by the movable contact during the opening / closing operation, and the center point P0 of the fixed contact surface.
And a line connecting the centers of gravity P1 and P2 of the cross sections of the first conductors on the left and right sides of the slit, and the center point P0 in a cross section perpendicular to the current path of the first conductor and the plane including the trajectory. Since the angles θ1 and θ2 on the surface side including the locus formed by the lines connecting the centers of gravity P1 and P2 are arranged to be 45 ° or more, the force for extending the arc in the space above and below the fixed contact surface Can be increased and the rise of the arc voltage can be improved.
【0068】請求項20の発明における開閉器は、前記
請求項19における角度θ1とθ2を45゜未満にした
ことにより、固定接触子の各部位にかかる電磁力が小さ
くでき、十分な機械的強度が得られない場合の固定接触
子の変形を防止できるIn the switch according to the invention of claim 20, since the angles θ1 and θ2 in claim 19 are set to less than 45 °, the electromagnetic force applied to each part of the fixed contact can be reduced, and sufficient mechanical strength can be obtained. Can prevent deformation of the fixed contactor when
【0069】請求項21の発明における開閉器は、可動
接触子が描く軌跡を含む面に沿ったスリットを有する第
3導体部を備え、前記軌跡を含み面および前記第3導体
部の電流路に垂直な面において、前記スリット左右の各
々の第3導体部断面の重心P1とP2を結ぶ線と、固定
接点表面の中心点P0から上方に伸ばした垂線が前記断
面S0と交わる点PO1 と前記重心PIおよび重心P2
を各々結ぶ線の成す前記軌跡を含む面側の角度θ1とθ
2が45゜以上または45゜未満になるように構成した
ので、前記角度θ1とθ2が45゜以上の場合は、固定
接点面上およびその上方近傍の空間のアークを引き延ば
す力を増大させることができ、アーク電圧の立ち上がり
を改善できる。また、前記角度θ1とθ2が45゜未満
の場合には、固定接点より端子部側に移動した遮断直前
の固定接触子側のアークスポットおよびその上方近傍の
空間のアークを引き延ばす磁場成分を略最大とすること
ができる。According to a twenty-first aspect of the invention, a switch is provided with a third conductor portion having a slit along a plane including a locus drawn by a movable contact, and the plane including the locus and a current path of the third conductor portion are provided. On a vertical plane, a line connecting the centers of gravity P1 and P2 of the cross sections of the respective third conductors on the left and right of the slit, and a point PO 1 at which a perpendicular line extending upward from the center point P0 of the fixed contact surface intersects with the cross section S0 and Center of gravity PI and center of gravity P2
Angles θ1 and θ on the surface side including the locus formed by the lines connecting
Since 2 is set to be 45 ° or more or less than 45 °, when the angles θ1 and θ2 are 45 ° or more, it is possible to increase the force for extending the arc in the space on and above the fixed contact surface. It is possible to improve the rise of the arc voltage. Further, when the angles θ1 and θ2 are less than 45 °, the magnetic field component that extends the arc spot on the fixed contact side immediately before breaking moved from the fixed contact to the terminal side and the arc in the space above it is almost maximum. Can be
【0070】[0070]
実施例1.以下、この発明の一実施例を図について説明
する。図1は請求項1の発明の一実施例による開閉器と
して容器を断面じた回路遮断器の閉成状態を示す消弧部
の側面図、図2は図1の回路遮断器の開成状態を示す側
面図であり、図39〜図41と同一または相当部分には
同一符号を付して重複説明を省略する。図において、4
は一端部に固定接点3が設けられた固定接触子であり、
この固定接触子4は、第1導体部4aと第2導体部4e
と第3導体部4dとから構成されている。Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of an arc extinguishing section showing a closed state of a circuit breaker as a switch according to an embodiment of the invention as shown in FIG. 1, and FIG. 2 shows an opened state of the circuit breaker of FIG. 39 is a side view shown, and the same or corresponding portions as those in FIGS. 39 to 41 are denoted by the same reference numerals to omit redundant description. In the figure, 4
Is a fixed contactor having a fixed contact 3 at one end,
The fixed contactor 4 includes a first conductor portion 4a and a second conductor portion 4e.
And a third conductor portion 4d.
【0071】更に詳しく述べると、図1の接点閉成状態
において、可動接触子1の可動接点2が固定接点3から
開離する方向を上方とした時、前記固定接触子4は、電
源側の端子部5が接続されて水平方向に延びる第1導体
部4aと、この第1導体部4aの下方に離間位置した第
2導体部4eと、この第2導体部4eと前記第1導体部
4aを前記端子部5の反対側で上下方向に接続している
第3導体部4dとから成る形状に一体形成され、前記第
2導体部4e上に固定接点3を固着して該固定接点3を
第1導体部4aの下方に位置させた構成となっている。More specifically, in the contact closed state of FIG. 1, when the direction in which the movable contact 2 of the movable contact 1 separates from the fixed contact 3 is upward, the fixed contact 4 is connected to the power source side. A first conductor portion 4a connected to the terminal portion 5 and extending in the horizontal direction, a second conductor portion 4e spaced below the first conductor portion 4a, a second conductor portion 4e and the first conductor portion 4a. Is integrally formed into a shape composed of a third conductor portion 4d which is vertically connected to the opposite side of the terminal portion 5, and the fixed contact 3 is fixed on the second conductor portion 4e to fix the fixed contact 3 to the fixed conductor 3. It is configured to be located below the first conductor portion 4a.
【0072】そして、前記固定接触子4は、固定接点3
の位置より可動接触子1の可動接点2が固着されていな
い他端側で、且つ、前記端子部5の反対側(可動接触子
1の回動支点14側)に第3導体部4dが位置する向き
として容器12に取付けセットされている。この場合、
第1導体部4aは、固定接点3に可動接点2が接触した
接点閉成時に該接点接触面より上方に全て位置し、且
つ、接点開成時に可動接点2の接触面より下方に位置す
る配置としてある。The fixed contactor 4 has the fixed contact 3
The third conductor portion 4d is located on the other end side where the movable contact 2 of the movable contactor 1 is not fixed from the position of (4) and on the opposite side of the terminal portion 5 (the rotation fulcrum 14 side of the movable contactor 1). It is attached and set to the container 12 in the direction to do. in this case,
The first conductor portion 4a is located above the contact contact surface when the movable contact 2 is in contact with the fixed contact 3 when the contact is closed, and below the contact surface of the movable contact 2 when the contact is opened. is there.
【0073】図1および図2に示した消弧板6は、前記
可動接触子1の回動を妨げないようにするための切欠部
(図示せず)が設けられた構成となっている。なお、図
1および図2においては、図39に示した従来の回路遮
断器における機構部8とハンドル9および負荷側の端子
部10を省略しており、これらは、当然、容器12内に
収納配置されている。The arc-extinguishing plate 6 shown in FIGS. 1 and 2 has a notch (not shown) for preventing the movable contact 1 from rotating. 1 and 2, the mechanical section 8, the handle 9 and the load side terminal section 10 in the conventional circuit breaker shown in FIG. 39 are omitted, and these are naturally contained in the container 12. It is arranged.
【0074】図3(a),(b)は請求項2の発明の実
施例による固定接触子を示す斜視図である。図3(a)
に示す固定接触子4は、第1導体部4aと第2導体部4
eと第3導体部4dとによって略U字形状に一体形成さ
れ、そのU字状の一端である前記第1導体部4aの電源
接続側の端部に電源側の端子部5が接続されている。ま
た、これと反対側の端部となるU字形状の内側、即ち、
前記第2導体部4eの上面部に固定接点3が固着されて
いる。さらに、前記固定接触子4において、前記固定接
点3の固着面より上方に位置する接続導体部(第1導体
部4aと第3導体部4d)には、第2導体部4e上の固
定接点3に対する可動接触子1の開閉動作を妨げないよ
うにするためのスリット40が設けられている。FIGS. 3 (a) and 3 (b) are perspective views showing a fixed contact according to an embodiment of the present invention. Figure 3 (a)
The fixed contactor 4 shown in FIG.
e and the third conductor portion 4d are integrally formed in a substantially U shape, and the power source side terminal portion 5 is connected to the power source connection side end portion of the first conductor portion 4a which is one end of the U shape. There is. In addition, the inside of the U-shape which is the opposite end, that is,
The fixed contact 3 is fixed to the upper surface of the second conductor portion 4e. Further, in the fixed contactor 4, the connection conductor portions (first conductor portion 4a and third conductor portion 4d) located above the fixing surface of the fixed contact 3 have fixed contacts 3 on the second conductor portion 4e. A slit 40 is provided so as not to interfere with the opening / closing operation of the movable contactor 1 with respect to.
【0075】図3(b)において、15は絶縁物であ
り、この絶縁物15は、前記固定接触子4の表面と前記
スリット40の内面を、第1導体部4aの端子部5接続
部近傍から第3導体部4dに亘って被覆している。In FIG. 3B, reference numeral 15 is an insulator, and this insulator 15 causes the surface of the fixed contactor 4 and the inner surface of the slit 40 to be in the vicinity of the connection portion of the terminal portion 5 of the first conductor portion 4a. To the third conductor portion 4d.
【0076】次に動作について説明する。短絡電流など
の大電流が流れると、機構部の動作を待たずに可動接触
子1が回動して可動接点2と固定接点3が開離し、これ
らの接点2,3間にアークAが発生することは従来と同
様である。図4は、前記接点2,3の開離直後において
可動接点2の接触面が未だ第1導体部4aの下方にある
状態を示している。ここで、矢印は電流を示し、消弧板
6は簡単のために省略した。Next, the operation will be described. When a large current such as a short-circuit current flows, the movable contact 1 rotates without waiting for the operation of the mechanism section to separate the movable contact 2 and the fixed contact 3, and an arc A is generated between these contacts 2 and 3. What to do is the same as the conventional one. FIG. 4 shows a state in which the contact surface of the movable contact 2 is still below the first conductor portion 4a immediately after the contacts 2 and 3 are separated. Here, the arrow indicates the current, and the arc extinguishing plate 6 is omitted for simplicity.
【0077】端子部5から第1導体部4aまでで構成さ
れる電流経路は、全てアークAより上方にある。この結
果、その電流経路が発生するアークAに作用する電磁力
は、アークAを端子部5側に引き延ばす力となる。そし
て、第3導体部4dに流れる電流はアークAの電流と逆
方向になるので、第3導体部4dを流れる電流による電
磁力もアークを端子部5側に引き延ばす力となる。従っ
て、この固定接触子4に流れる電流が発生する電磁力
は、全てアークAを端子部5側に引き延ばす力となる。
この結果、接点開離直後のアークAは強力に引き延ばさ
れ、アーク抵抗が急激に高くなる。All current paths formed from the terminal portion 5 to the first conductor portion 4a are above the arc A. As a result, the electromagnetic force acting on the arc A generated by the current path becomes a force that extends the arc A toward the terminal portion 5. Then, since the current flowing through the third conductor portion 4d is in the opposite direction to the current of the arc A, the electromagnetic force due to the current flowing through the third conductor portion 4d also becomes a force that extends the arc toward the terminal portion 5 side. Therefore, the electromagnetic force generated by the current flowing through the fixed contact 4 is a force that extends the arc A toward the terminal portion 5 side.
As a result, the arc A immediately after the contact is opened is strongly extended, and the arc resistance sharply increases.
【0078】図5(a)は実施例1の固定接触子を流れ
る電流が発生する磁場強度分布の説明するために示した
可動接触子と固定接触子の側面図、図5(b)は図5
(a)のA−A線断面図である。図において、41はス
リット40を挟む左右両側の第1導体部4aの各断面の
重心である。図5(c)は理論計算で求めた固定接触子
4を流れる電流がつくる図5(b)のZ軸上での磁場強
度分布であり、正方向の磁場がアークを端子部5側に引
き延ばす磁場成分である。図5(c)で示すように、第
1導体部4aは可動接触子1が回動する平面から左右に
ずれた所に位置する。FIG. 5A is a side view of the movable contact and the fixed contact shown for explaining the magnetic field strength distribution generated by the current flowing through the fixed contact of the first embodiment, and FIG. 5
It is the sectional view on the AA line of (a). In the figure, 41 is the center of gravity of each cross section of the first conductor portion 4a on both the left and right sides of the slit 40. FIG. 5 (c) is a magnetic field strength distribution on the Z axis of FIG. 5 (b) created by the current flowing through the fixed contactor 4 obtained by theoretical calculation, and the positive direction magnetic field extends the arc toward the terminal portion 5 side. It is a magnetic field component. As shown in FIG. 5 (c), the first conductor portion 4a is located at a position displaced to the left and right from the plane on which the movable contact 1 rotates.
【0079】このような導体配置では、第2導体部4e
および第3導体部4dを流れる電流の影響のために、第
1導体部4aより上部の空間(領域Z0)までアークA
を端子部5側に引き延ばす磁場成分が存在する。そのた
め、図6のように、可動接点面が第1導体部4aより上
方まで回動しても、第1導体部4aのスリット40の部
分では、アークAは端子部5側に力を受け、前記スリッ
ト40の奥(スリット40の端子部5側の端部内面)の
部分を覆う絶縁物15aに押しつけられて冷却される。
この結果、接点開離直後に急激に上昇したアーク抵抗が
更に増大し、高いアーク電圧が維持されるので、電流ピ
ークおよび通過エネルギーを小さく押えることができ、
優れた限流性能を有した回路遮断器が得られる。In such a conductor arrangement, the second conductor portion 4e
And due to the influence of the current flowing through the third conductor portion 4d, the arc A reaches the space above the first conductor portion 4a (zone Z0).
Exists to the terminal portion 5 side. Therefore, as shown in FIG. 6, even if the movable contact surface is rotated above the first conductor portion 4a, the arc A receives a force on the terminal portion 5 side at the slit 40 portion of the first conductor portion 4a. It is cooled by being pressed against the insulator 15a that covers the inner portion of the slit 40 (the inner surface of the end portion of the slit 40 on the terminal portion 5 side).
As a result, the arc resistance that sharply increased immediately after contact opening increased further, and since a high arc voltage was maintained, the current peak and passing energy could be suppressed to a small level,
A circuit breaker with excellent current limiting performance is obtained.
【0080】上記実施例1においては、可動接触子1の
回動を妨げないようにするためのスリット40を前記可
動接触子1の回動面に対して左右対称に設けた固定接触
子4の形状について説明したが、この固定接触子4は図
7に示すような形状構成としても同様の効果が得られ
る。In the first embodiment, the slit 40 for preventing the rotation of the movable contact 1 from being disturbed is provided in the fixed contact 4 which is provided symmetrically with respect to the rotating surface of the movable contact 1. Although the shape has been described, the same effect can be obtained even if the fixed contactor 4 has a shape configuration as shown in FIG. 7.
【0081】実施例2.図7(a)は請求項3の発明の
一実施例による固定接触子の斜視図、図7(b)は図7
(a)の固定接触子を絶縁した状態を示す斜視図であ
る。この実施例2による固定接触子4は、図7(a)の
ように、端子部5側に向って左側にのみ第1導体部4a
を配した形状構成としている。この固定接触子4の場
合、図8(a)のように可動接触子の開極初期のアーク
Aの上部半分において、このアークAの電流と前記左側
だけの第1導体部4aの電流が同じ方向となるので、ア
ークAは前記左側だけの第1導体部4aに引き付けら
れ、この第1導体部4aを覆う絶縁物15に強く触れて
冷却される。このため、前記開極初期においては、アー
ク電圧がより素早く立ち上がる。Example 2. FIG. 7A is a perspective view of a fixed contact according to an embodiment of the invention of claim 3, and FIG.
It is a perspective view showing the state where the fixed contact child of (a) was insulated. As shown in FIG. 7A, the fixed contactor 4 according to the second embodiment has the first conductor portion 4a only on the left side toward the terminal portion 5 side.
Has a shape configuration. In the case of the fixed contactor 4, as shown in FIG. 8A, in the upper half of the arc A at the initial stage of opening the movable contactor, the current of the arc A and the current of the first conductor portion 4a only on the left side are the same. The arc A is attracted to the first conductor portion 4a only on the left side, and the insulator 15 covering the first conductor portion 4a is strongly touched and cooled. Therefore, the arc voltage rises more quickly in the initial stage of the opening.
【0082】一方、さらに接点2,3間が開離して可動
接点2が第1導体部4aより上方に位置すると、図8
(b)に示すように、アークAの下部半分において、ア
ーク電流と前記左側だけの第1導体部4aの電流が逆方
向となって反発し合うので、アークAは前記左側だけの
第1導体部4aを覆う絶縁物15から遠ざかり、この絶
縁物15から発生する蒸気量が減少し、電流増加に伴う
容器12内の圧力上昇を小さくでき、圧力による容器1
2の損傷を未然に防止できる。On the other hand, when the movable contacts 2 are positioned above the first conductor portion 4a by further separating the contacts 2 and 3, FIG.
As shown in (b), in the lower half of the arc A, the arc current and the current of the first conductor portion 4a on the left side are in opposite directions and repel each other. Therefore, the arc A is the first conductor on the left side only. The distance from the insulator 15 that covers the portion 4a is reduced, the amount of vapor generated from the insulator 15 is reduced, and the pressure increase in the container 12 due to the increase in current can be reduced.
The damage of 2 can be prevented in advance.
【0083】つまり、上記実施例2のように可動接触子
1の回動面に対する固定接触子4の第1導体部4aを左
右どちらか一方にすると、限流効果に優れ且つ圧力によ
る容器12の損傷が起こり難い形状構成の固定接触子4
を得ることができる。In other words, if the first conductor portion 4a of the fixed contactor 4 with respect to the rotating surface of the movable contactor 1 is left or right as in the second embodiment, the current limiting effect is excellent and the container 12 by pressure is excellent. Fixed contactor 4 with a shape configuration that does not easily cause damage
Can be obtained.
【0084】上記実施例1では端子部5を第1導体部4
aと面一にしたが、この実施例2のように左右どちらか
一方だけの第1導体部4aを有する図7の固定接触子4
とすることによって、端子部5を流れる電流成分も固定
接点3の表面近傍のアークを端子部5側に引き延ばす磁
場が発生し、接点開離初期のアークが効果的に引き延ば
される。In the first embodiment, the terminal portion 5 is replaced by the first conductor portion 4
Although it is flush with a, the fixed contactor 4 of FIG. 7 has only one of the left and right first conductor portions 4a as in the second embodiment.
By so doing, a current component flowing through the terminal portion 5 also generates a magnetic field that extends the arc near the surface of the fixed contact 3 toward the terminal portion 5 side, and the arc at the initial stage of contact opening is effectively extended.
【0085】実施例3.図9は請求項4の発明の一実施
例による要部の側面図である。この実施例では、電源側
の端子部5を第1導体部4aより上方に配した構成とし
ている。このように、端子部5を第1導体部4aより上
方にすると、端子部5の近くまで引き延ばされたアーク
Aの電流の一部が端子部5の電流と引き合うので、アー
クAが大きく延びる遮断直前において効果的にアークA
を引き延ばせる。Example 3. FIG. 9 is a side view of a main part according to an embodiment of the invention of claim 4. In this embodiment, the terminal portion 5 on the power supply side is arranged above the first conductor portion 4a. In this way, when the terminal portion 5 is positioned above the first conductor portion 4a, a part of the current of the arc A extended to the vicinity of the terminal portion 5 attracts the current of the terminal portion 5, so that the arc A becomes large. Effective arc A just before the interruption
Can be extended.
【0086】このように、遮断直前のアーク長を電磁力
により長くできるので、比較的高電圧の回路における比
較的小さな電流の遮断動作などの電磁力による遮断直前
のアーク引き延ばし作用が、遮断性能に重要な影響を与
える場合に有効である。As described above, since the arc length immediately before interruption can be lengthened by the electromagnetic force, the arc extending action immediately before interruption by the electromagnetic force such as interruption operation of a relatively small current in a relatively high voltage circuit has an effect on interruption performance. It is effective when it has a significant impact.
【0087】実施例4.図10は請求項4の発明の他の
実施例による要部の側面図である。この実施例による固
定接触子4は、端子部5を第1導体部4aより下方で、
且つ、固定接点3の表面より上方に位置させた形状構成
としている。このように固定接触子4の端子部5を第1
導体部4aより下方にすると、固定接触子4のアークよ
り端子部5側の一部において上方向の電流成分が生じ、
この電流成分がアークAと引き合うため、ある程度、接
点2,3が開離して引き延ばされたアークAを、この上
方向電流の近くで補足することが可能となる。そのた
め、遮断動作の途中でアークAが接点2,3間に引き戻
されるのを防ぐことができ、高いアーク電圧を維持する
ことが可能となる。Example 4. FIG. 10 is a side view of a main part according to another embodiment of the invention of claim 4. In the fixed contactor 4 according to this embodiment, the terminal portion 5 is located below the first conductor portion 4a,
In addition, the fixed contact 3 is formed above the surface of the fixed contact 3. In this way, the terminal portion 5 of the fixed contactor 4 is
If it is below the conductor portion 4a, an upward current component is generated in a part of the fixed contactor 4 on the terminal portion 5 side of the arc,
Since this current component attracts the arc A, it is possible to capture the extended arc A by opening the contacts 2 and 3 to some extent near this upward current. Therefore, it is possible to prevent the arc A from being pulled back between the contacts 2 and 3 during the interruption operation, and it is possible to maintain a high arc voltage.
【0088】また、上述のように、第1導体部4aより
下方に位置する端子部5を固定接点3の表面より上方に
配置したことにより、端子部5の電流が固定接点3の表
面のアークAを引き延ばす磁場成分が発生し、アーク電
圧の立ち上がりを速めることができる。Further, as described above, by disposing the terminal portion 5 located below the first conductor portion 4a above the surface of the fixed contact 3, the current of the terminal portion 5 causes an arc on the surface of the fixed contact 3. A magnetic field component that extends A is generated, and the rise of the arc voltage can be accelerated.
【0089】実施例5.図11は請求項4の発明の別の
実施例および請求項5の発明の実施例による要部の側面
図である。この実施例による固定接触子4は、端子部5
が第1導体部4aおよび固定接点3の表面より下方に位
置した形状構成となっており、端子部5が第1導体部4
aより下方に存在することによる作用効果は前記実施例
4の場合と同様である。また、この実施例5のように、
端子部5が更に固定接点3の表面より下方に存在するこ
とによって、前述のアークを補足する上方向の電流成分
が増加して補足効果が増大し、遮断動作後半において、
より高いアーク電圧を維持できる。そのため、電流遮断
完了までの時間が短くなり、遮断動作により遮断器内部
に発生する総エネルギー量および通過エネルギーを減少
させることが可能となる。Example 5. FIG. 11 is a side view of a main portion according to another embodiment of the invention of claim 4 and the embodiment of the invention of claim 5. The fixed contactor 4 according to this embodiment includes a terminal portion 5
Is located below the surfaces of the first conductor portion 4a and the fixed contact 3, and the terminal portion 5 has the first conductor portion 4a.
The function and effect obtained by being located below a is the same as in the case of the fourth embodiment. In addition, as in the fifth embodiment,
Since the terminal portion 5 is further below the surface of the fixed contact 3, the upward current component that supplements the arc increases and the supplement effect increases, and in the latter half of the breaking operation,
A higher arc voltage can be maintained. Therefore, the time until the completion of the current interruption is shortened, and it becomes possible to reduce the total energy amount and the passing energy generated inside the circuit breaker by the interruption operation.
【0090】実施例6.図12および図13は請求項6
の発明の実施例による主要部の側面図である。この実施
例による固定接触子4は、固定接点3と反対側に凸の屈
曲部を持つ第1導体部4aが一体形成された形状構成と
している。この固定接触子4の場合、前記上方向の電流
成分による補足効果は減少するが、接点開離初期の比較
的電流の小さい時に可動接点2に近いアークAの一部を
効率的に引っ張ることができるので、アーク電圧の初期
立ち上がりを速くできる。また、前記第1導体部4aの
屈曲部は鈍角に形成されており、これによって、前記固
定接触子4の曲げ加工が容易となる。さらに、端子部5
の位置が外部回路との接続の関係上規定されている場
合、図10〜図13のように第1導体部4aを端子部5
より上方に配置され、これによって、必然的に第3導体
部4dの長さが長くなり、第3導体部4dの下向きの電
流とアークAの上向きの電流が反発する作用が増大さ
れ、アークAの引き延ばしが促進される。Example 6. 12 and 13 are claims 6
FIG. 6 is a side view of a main part according to the embodiment of the invention of FIG. The fixed contactor 4 according to this embodiment has a shape configuration in which a first conductor portion 4a having a convex bent portion is integrally formed on the side opposite to the fixed contact 3. In the case of this fixed contactor 4, the supplementary effect due to the above-mentioned current component is reduced, but when the current is relatively small at the initial stage of contact opening, a part of the arc A near the movable contact 2 can be efficiently pulled. Therefore, the initial rise of the arc voltage can be accelerated. In addition, the bent portion of the first conductor portion 4a is formed at an obtuse angle, which facilitates bending of the fixed contactor 4. Furthermore, the terminal portion 5
When the position is defined in relation to the connection with the external circuit, the first conductor portion 4a is connected to the terminal portion 5 as shown in FIGS.
It is arranged higher, which inevitably increases the length of the third conductor portion 4d and increases the repulsive action of the downward current of the third conductor portion 4d and the upward current of the arc A. The extension of is promoted.
【0091】実施例7.図14は請求項7の発明の実施
例による要部の側面図である。この実施例7では、上記
実施例1において、固定接触子4の固定接点3を固着し
た第2導体部4eのかわりに、第2導体部4eを可動接
触子1の回動中心14の方向に延ばして、第2導体部4
eの部分に流れる電流が閉成時の可動接触子1に流れる
電流と略平行で逆方向になるよう構成している。このよ
うな構成にすると、第2導体部4eの電流によるアーク
Aを端子部5側に引き延ばす電磁力が増大し、また閉成
時の可動接触子1と第2導体部4eとの間に電磁反発力
が働くため、可動接触子1の回動スピードが増大し、接
点開離直後のアーク長が早く大きくなる。このため、ア
ーク抵抗の立ち上がりが、より早くなり、より限流性能
が向上する。Example 7. FIG. 14 is a side view of the essential part according to the embodiment of the invention of claim 7. In the seventh embodiment, instead of the second conductor portion 4e to which the fixed contact 3 of the fixed contact 4 is fixed in the first embodiment, the second conductor portion 4e is moved in the direction of the rotation center 14 of the movable contact 1. Extend the second conductor portion 4
The current flowing through the portion e is configured so as to be substantially parallel to the current flowing through the movable contact 1 at the time of closing and in the opposite direction. With such a configuration, the electromagnetic force that extends the arc A due to the current of the second conductor portion 4e toward the terminal portion 5 side increases, and the electromagnetic force is generated between the movable contact 1 and the second conductor portion 4e at the time of closing. Since the repulsive force acts, the rotating speed of the movable contactor 1 increases, and the arc length immediately after the contact is opened increases rapidly. Therefore, the arc resistance rises faster and the current limiting performance is further improved.
【0092】実施例8.図15は請求項8の発明の実施
例による主要部の側面図である。この実施例による固定
接触子4は、第1導体部4aの第3導体部4dに接続さ
れる部位が斜めに形成されているので、固定接点3の表
面でのアークAに引き延ばす磁場強度を増大させること
が可能となる。Example 8. FIG. 15 is a side view of a main part according to an embodiment of the invention of claim 8. In the fixed contactor 4 according to this embodiment, since the portion of the first conductor portion 4a connected to the third conductor portion 4d is formed obliquely, the magnetic field strength extended to the arc A on the surface of the fixed contact 3 is increased. It becomes possible.
【0093】以下、上述のことについて更に詳細に説明
する。理想的には、固定接触子4が作る固定接点3表面
の中心点でのアークを引き延ばす方向の磁場強度を最大
にするには、固定接点3表面の中心点を中心とし、且つ
アークAを引き延ばす方向の磁場が最大となる半径を持
ち、可動接触子1の回動面に垂直な円筒面上に固定接触
子4の導体部を配置する必要がある。但し、前記半径は
固定接触子4の導体部の形状により異なる。The above will be described in more detail below. Ideally, in order to maximize the magnetic field strength in the direction of extending the arc at the center of the surface of the fixed contact 3 created by the fixed contact 4, the center of the surface of the fixed contact 3 is made the center and the arc A is extended. It is necessary to arrange the conductor portion of the fixed contactor 4 on a cylindrical surface having a radius that maximizes the magnetic field in the direction and perpendicular to the rotating surface of the movable contactor 1. However, the radius differs depending on the shape of the conductor portion of the fixed contactor 4.
【0094】例えば、図3に示したように、可動接触子
1の回動面に対してスリット40を挟む左右対称の第1
導体部4aが配置されている場合、この左右の導体部間
の距離の半分の値が前記半径である。しかし、実際には
完全にこのような円筒面上に沿って導体部を配置するこ
とは困難であるかコストが非常に高くなる。そこで、前
記の理想円筒になるべく近く、且つ加工が簡単な導体部
形状が求められる。For example, as shown in FIG. 3, the first symmetrically symmetric first and second slits 40 sandwiching the rotary surface of the movable contact 1 are provided.
When the conductor portion 4a is arranged, half the distance between the left and right conductor portions is the radius. However, in practice, it is difficult or very costly to arrange the conductor portion completely along such a cylindrical surface. Therefore, a conductor portion shape that is as close as possible to the ideal cylinder and is easy to process is required.
【0095】上記実施例1のように、固定接触子4は屈
曲部が少ないほど加工は簡単であるが、固定接触子4の
導体部が前記理想円筒の位置からずれる部分が多くな
る。そこで、図15のように、第1導体部4aに屈曲部
を増やすことにより、前記理想円筒からのずれを減ら
し、固定接点3表面でのアークを引き延ばす磁場強度を
増大させると共に、加工コストの上昇等を最小限に抑え
ることが可能となる。As in the first embodiment, the smaller the number of bent portions of the fixed contactor 4 is, the easier the processing is. However, the conductor portion of the fixed contactor 4 is displaced from the position of the ideal cylinder in many portions. Therefore, as shown in FIG. 15, by increasing the bent portion in the first conductor portion 4a, the deviation from the ideal cylinder is reduced, the magnetic field strength for extending the arc on the surface of the fixed contact 3 is increased, and the processing cost is increased. It is possible to minimize the above.
【0096】実施例9.図16は請求項9の実施例によ
る主要部の側面図である。この実施例による固定接触子
4は、第1導体部4aと第3導体部4dとを鈍角の屈曲
部Δ1を介して連続させると共に、第3導体部4dと第
2導体部4eとを鋭角の屈曲部Δ2を介して連続させ、
前記鈍角および前記鋭角が固定接点3と反対側に凸とな
るように第3導体部4dを斜めに形成した形状構成とし
ている。この実施例9によれば、前記屈曲部の数を増や
すことなく、実施例1の場合よりも前記理想円筒からの
ずれを小さくできる。Example 9. FIG. 16 is a side view of the main part according to the embodiment of claim 9. In the fixed contactor 4 according to this embodiment, the first conductor portion 4a and the third conductor portion 4d are connected to each other through the obtuse-angled bent portion Δ1, and the third conductor portion 4d and the second conductor portion 4e have an acute angle. Continuing through the bending part Δ2,
The third conductor portion 4d is formed obliquely so that the obtuse angle and the acute angle are convex on the side opposite to the fixed contact 3. According to the ninth embodiment, the deviation from the ideal cylinder can be made smaller than that in the first embodiment without increasing the number of the bent portions.
【0097】ところで、通電容量の大きな回路遮断器の
場合、固定接触子4の導体部断面が大きくなり、図15
および図16のような小さな半径の曲げ加工は困難とな
る。By the way, in the case of a circuit breaker having a large current-carrying capacity, the cross section of the conductor portion of the fixed contact 4 becomes large, and FIG.
Bending with a small radius as shown in FIG. 16 becomes difficult.
【0098】実施例10.図17は請求項10の実施例
による主要部の側面図である。この実施例による固定接
触子4は、第3導体部4dを固定接点3と反対側に凸と
なる曲線状に形成している。これにより、固定接触子1
の導体部断面が大きな場合でも、理想的な導体部形状に
近い導体部配置が可能となるので、アーク電圧の立ち上
がりが速くなる。Example 10. FIG. 17 is a side view of a main part according to the tenth embodiment. In the fixed contactor 4 according to this embodiment, the third conductor portion 4d is formed in a curved shape protruding toward the side opposite to the fixed contact 3. As a result, the fixed contact 1
Even if the cross section of the conductor is large, the conductor can be arranged close to the ideal shape of the conductor, so that the arc voltage rises quickly.
【0099】実施例11.図18(a)は請求項11の
発明の実施例による接点開離直後の状態を示す主要部の
側面図、図18(b)は図18(a)の最大開離状態を
示す主要部の側面図である。この実施例による固定接触
子4は、第1導体部4aに固定接触子4側へ凸となる突
出部を4ax設け、この突出部4axの頂点が固定接点3よ
り端子部5側に位置するように構成している。この構成
によれば、接点開離初期においては、図18(a)に示
すように前記突出部4axの斜め上方に流れる電流成分に
よってアークAが引き付けられ、素早くアークAが引き
延ばされるので、アーク電圧の立ち上がりを速くするこ
とが可能である。また、図18(b)に示すように、接
点2,3が更に開離しアーク長が長くなると、アークA
は第1導体部4aの前記突出部4axの頂点より端子部5
側まで引き延ばされる。この時、前記突出部4axの斜め
下方に流れる電流成分とアーク電流が逆方向となって反
発し合うので、アークAが接点2,3間方向に戻るのを
妨げ、高いアーク電圧を維持できる。Example 11. 18 (a) is a side view of the main part showing a state immediately after contact opening according to the embodiment of the invention of claim 11, and FIG. 18 (b) is a main part showing the maximum open state of FIG. 18 (a). It is a side view. In the fixed contactor 4 according to this embodiment, the first conductor portion 4a is provided with a protruding portion 4ax that is convex toward the fixed contactor 4 side, and the apex of this protruding portion 4ax is located closer to the terminal portion 5 side than the fixed contact 3. It is configured to do. According to this configuration, in the initial stage of contact opening, the arc A is attracted by the current component flowing diagonally above the protruding portion 4 ax as shown in FIG. It is possible to speed up the rise of the arc voltage. Further, as shown in FIG. 18B, when the contacts 2 and 3 are further separated and the arc length becomes long, the arc A
Is the terminal portion 5 from the top of the protruding portion 4 ax of the first conductor portion 4 a.
It is stretched to the side. At this time, the current component flowing diagonally below the protruding portion 4 ax and the arc current repel each other in opposite directions, so that the arc A is prevented from returning in the direction between the contacts 2 and 3, and a high arc voltage can be maintained. .
【0100】実施例12.図19は請求項12の実施例
による主要部の側面図である。この実施例による固定接
触子4は、第2導体部4eの固定接点3が固着された一
端部を他端部より下方に配置し、固定接点3の接触面が
上下方向に垂直線より端子部5側に向くように構成して
いる。このような構成にすると、固定接点3上でのアー
クAの吹き出し方向を端子部5側に向けることができ
る。Example 12. FIG. 19 is a side view of a main portion according to the embodiment of claim 12. In the fixed contactor 4 according to this embodiment, one end portion of the second conductor portion 4e to which the fixed contact point 3 is fixed is arranged below the other end portion, and the contact surface of the fixed contact point 3 is a terminal portion from a vertical line in the vertical direction. It is configured to face the 5 side. With such a configuration, the blowing direction of the arc A on the fixed contact 3 can be directed to the terminal portion 5 side.
【0101】一般に、アークAの電流が大きくなると、
接点面からアークが吹き出す力が大きくなり、磁場によ
る引き延ばし効果が相対的に小さくなる。このため、遮
断動作初期の比較的小さな電流領域で磁場により引き延
ばされたアークも、電流の増加と共に接点間方向に引き
戻されアーク電圧が低下することがある。Generally, when the current of the arc A becomes large,
The force of the arc blown from the contact surface becomes large, and the effect of the magnetic field stretching becomes relatively small. Therefore, the arc stretched by the magnetic field in the relatively small current region in the initial stage of the breaking operation may be pulled back in the direction between the contacts as the current increases and the arc voltage may drop.
【0102】そこで、図19のようにアーク吹き出し方
向を端子部5側に向けると、アークAが吹き出す力が大
きくなってもアークAは接点2,3間側に戻らず、アー
ク電圧を維持することが可能となる。Therefore, when the arc blowing direction is directed to the terminal portion 5 side as shown in FIG. 19, the arc A does not return to the side between the contacts 2 and 3 and the arc voltage is maintained even if the force blowing out by the arc A becomes large. It becomes possible.
【0103】実施例13.図20は請求項13の発明の
実施例による主要部の側面図である。この実施例による
固定接触子4は、第2導体部4eの固定接点3が固着さ
れている導体部位を、第2導体部4eと第3導体部4d
の接続部位より上方に位置させた形状構成としている。
このような構成にすると、第3導体部4dの電流経路が
長くなり、この電流経路を流れる電流によるアークAを
端子部5側に押し出す力が増大する。また、固定接点3
より第3導体部4d側の第2導体部4eの導体部位がア
ークから遠ざかる。このため、アーク電流の増加に伴い
アーク径が大きくなっても、機構部側に(一般に、機構
部は可動接触子1の回動中心14側に配置される。)ア
ークが広がり難く、機構部への熱流および熱流に伴う溶
融物の流れ込みを防げるので、遮断動作後に開閉動作が
不能となることを防げる。Example 13. FIG. 20 is a side view of the main part according to the embodiment of the invention of claim 13. In the fixed contactor 4 according to this embodiment, the conductor portion to which the fixed contact 3 of the second conductor portion 4e is fixed is the second conductor portion 4e and the third conductor portion 4d.
The shape configuration is such that it is located above the connection part of.
With such a configuration, the current path of the third conductor portion 4d becomes long, and the force of pushing the arc A due to the current flowing through this current path toward the terminal portion 5 side increases. In addition, fixed contact 3
The conductor portion of the second conductor portion 4e closer to the third conductor portion 4d moves away from the arc. Therefore, even if the arc diameter increases as the arc current increases, the arc is difficult to spread on the mechanism portion side (generally, the mechanism portion is disposed on the rotation center 14 side of the movable contact 1), and the mechanism portion is difficult. Since it is possible to prevent the heat flow into and to the melt from flowing into the heat flow, it is possible to prevent the opening / closing operation from being disabled after the shutoff operation.
【0104】上記実施例13(図20)では容器を図示
していないが、固定接点3が固着されている導体部位を
上方にあげることにより、前記導体部位と容器間に空間
を設けることができる。この空間が存在しない場合、固
定接点3より端子部5が輪に押し出されたアークAが発
生する圧力が近接する容器部に反射されるので、アーク
がそれ以上端子部5が輪に押し出され難い。そこで、前
記近接する容器部を遠ざけることによって、前記アーク
圧力の反射を抑え、アークAが端子部5側に押し出され
易い気流を発生することが可能となる。Although the container is not shown in the thirteenth embodiment (FIG. 20), a space can be provided between the conductor part and the container by raising the conductor part to which the fixed contact 3 is fixed. . If this space does not exist, the pressure generated by the arc A, in which the terminal portion 5 is pushed out of the fixed contact 3 into the ring, is reflected to the container portion in the vicinity, so that the arc is less likely to be pushed out into the ring. . Therefore, by moving away the adjacent container portion, it is possible to suppress the reflection of the arc pressure and generate an airflow in which the arc A is easily pushed out to the terminal portion 5 side.
【0105】実施例14.図21は請求項14の発明の
実施例による主要部の側面図である。この実施例による
固定接触子4は、第2導体部4eと第3導体部4dとの
接続部を鋭角とし、第2導体部4eには屈曲部を設けな
いように構成したことにより、上記実施例13の場合と
同様の効果が得られる。Example 14. 21 is a side view of a main portion according to the embodiment of the invention of claim 14. FIG. In the fixed contactor 4 according to this embodiment, the connecting portion between the second conductor portion 4e and the third conductor portion 4d has an acute angle, and the second conductor portion 4e is not provided with a bent portion. The same effect as in the case of Example 13 can be obtained.
【0106】実施例15.図22は請求項15の発明の
実施例による主要部の側面図である。この実施例による
固定接触子4は、第3導体部4dの上方の部分が下方の
部分より固定接触子1の回動中心14側になるように第
3導体部4dを斜めに形成している。このような構成に
すると、接点開離初期から接点回路動作後半までの比較
的長い間、可動接触子1の一部が第1導体部4aと第2
導体部4eおよび3導体部4dで囲まれた空間内にあ
り、上記の比較的長い間、可動接触子1が固定接触子4
を流れる電流がつくる磁場により接点開離方向に力を受
ける。このため、接点開離初期だけでなく、可動接点2
が第1導体部4aの上部に出てからも可動接触子1の開
離速度は減少しないので、最大開離距離に到達する時間
を速めることが可能となる。Example 15. 22 is a side view of a main part according to an embodiment of the invention of claim 15. As shown in FIG. In the fixed contactor 4 according to this embodiment, the third conductor portion 4d is formed obliquely so that the upper portion of the third conductor portion 4d is closer to the rotation center 14 side of the fixed contactor 1 than the lower portion. . With such a configuration, a part of the movable contactor 1 and the second conductor part 4a and the second conductor part 4a are retained for a relatively long period from the initial stage of contact opening to the latter half of contact circuit operation.
The movable contact 1 is in the space surrounded by the conductor portion 4e and the three conductor portion 4d, and the movable contact 1 is fixed to the fixed contact 4 for a relatively long time.
The magnetic field generated by the current flowing through the contacts receives a force in the contact opening direction. For this reason, the movable contact 2 is not limited to the initial contact opening.
Since the opening speed of the movable contactor 1 does not decrease even after appears at the upper part of the first conductor portion 4a, it is possible to shorten the time to reach the maximum opening distance.
【0107】一般に、電源電圧が比較的高い電圧の回路
(例えば550V)における比較的小さな短絡電流領域
の遮断動作では、可動接触子1に働く電磁反発力が小さ
く電流遮断直前においても接点間の開離距離が小さいの
で、接点間にて絶縁破壊を起こし遮断失敗を起こすこと
がある。そこで、前述した図22のように、接点最大開
離距離に到達する時間を速めるように構成することによ
って、前述のような遮断失敗を防ぐことが可能となる。Generally, in the breaking operation of a relatively small short-circuit current region in a circuit having a relatively high power supply voltage (for example, 550V), the electromagnetic repulsive force acting on the movable contact 1 is small and the contacts are opened even immediately before breaking the current. Since the separation distance is small, insulation failure may occur between contacts, resulting in failure of interruption. Therefore, as shown in FIG. 22, it is possible to prevent the above-mentioned disconnection failure by arranging to accelerate the time for reaching the maximum contact separation distance.
【0108】図23は図22の第2導体部4eを上方か
ら見た図であり、この図のように、第2導体部4eは固
定接点3が固着されている方の導体幅を狭く形成し、そ
の第2導体部4eを流れる電流がなるべく該導体部の中
心線に沿って固定接点3側に集中するように構成してい
る。このように、電流を集中させることによって、第2
導体部4eの電流がつくる固定接点3近傍のアークAを
引き延ばす磁場成分を増大する。また、可動接触子1の
導体を流れる電流との電磁反発力が増大し可動接触子1
の開離速度が上昇する。FIG. 23 is a view of the second conductor portion 4e of FIG. 22 as seen from above. As shown in FIG. 23, the second conductor portion 4e has a narrower conductor width to which the fixed contact 3 is fixed. The current flowing through the second conductor portion 4e is concentrated on the fixed contact 3 side along the center line of the conductor portion as much as possible. By concentrating the current in this way, the second
The magnetic field component that extends the arc A near the fixed contact 3 formed by the current of the conductor portion 4e is increased. In addition, the electromagnetic repulsive force with the current flowing through the conductor of the movable contact 1 increases and the movable contact 1
The opening speed of the will increase.
【0109】このような効果により、アーク電圧の立ち
上がりが速くなり限流性能が向上する。また、一般にア
ーク電流の増大と共にアーク径が広がっていくが、図2
3のように固定接点3が固着している部分の導体幅を狭
くすると、アーク径の広がりが抑制され、アーク電流密
度が上昇するので、アーク抵抗が大きくなって高いアー
ク電圧を維持することが可能となる。Due to such an effect, the arc voltage rises quickly and the current limiting performance is improved. In addition, the arc diameter generally expands as the arc current increases.
When the conductor width of the portion where the fixed contact 3 is fixed as shown in 3 is narrowed, the spread of the arc diameter is suppressed and the arc current density increases, so that the arc resistance increases and the high arc voltage can be maintained. It will be possible.
【0110】実施例16.図24(a)は請求項16の
一実施例による可動接触子1と固定接触子4を上方から
見た図、図24(b)は図24(a)の側面図である。
この実施例では、固定接触子4に可動接触子1の開閉動
作を妨げないようにするためのスリット40を設け、且
つ、このスリット40の左右の導体部4a,4aを略平
行に配置している。Example 16. 24A is a view of the movable contact 1 and the fixed contact 4 according to an embodiment of claim 16 as seen from above, and FIG. 24B is a side view of FIG. 24A.
In this embodiment, the fixed contactor 4 is provided with a slit 40 for preventing the opening / closing operation of the movable contactor 1, and the left and right conductor portions 4a, 4a of the slit 40 are arranged substantially parallel to each other. There is.
【0111】実施例17.図25は請求項16の発明の
他の実施例による可動接触子1と固定接触子4を上方か
ら見た図である。この実施例では、固定接触子4のスリ
ット40を、可動接触子1の回動中心14側の幅が端子
部5側の幅より漸次小さくなるように形成している。こ
のような形状にスリット40を形成することにより、遮
断動作時の回動中心14側への熱流の流れを防ぐことが
できる。Example 17 FIG. 25 is a view of the movable contact 1 and the fixed contact 4 according to another embodiment of the invention of claim 16 as seen from above. In this embodiment, the slit 40 of the fixed contactor 4 is formed so that the width of the movable contactor 1 on the side of the rotation center 14 becomes gradually smaller than the width on the side of the terminal portion 5. By forming the slit 40 in such a shape, it is possible to prevent the heat flow from flowing toward the rotation center 14 during the shutoff operation.
【0112】一般に、可動接触子1の回動中心14側に
は可動接触子1を開閉動作させる機構部が存在してお
り、前記熱流により機構部に溶融物が付着し、遮断動作
後の再投入不能の原因となる。また、前記熱流により可
動接触子1の可動接点2より回動中心14側の導体部位
にアークが発弧してアーク電圧が急激に減少し、遮断不
能になる場合がある。In general, a mechanism portion for opening and closing the movable contact 1 is present on the side of the center of rotation 14 of the movable contact 1, and the melt adheres to the mechanism due to the heat flow, which causes a re-operation after the interruption operation. It will cause the input impossible. Further, the heat flow may cause an arc to ignite at a conductor portion on the side of the rotation center 14 with respect to the movable contact 2 of the movable contact 1, and the arc voltage may sharply decrease, making it impossible to interrupt.
【0113】そこで、図25のように、可動接触子1の
回動中心14側のスリット40の幅を端子部5側のスリ
ット幅より小さくすることにより、前記熱流を防ぎ信頼
性の高い遮断性能を実現することができる。Therefore, as shown in FIG. 25, the width of the slit 40 on the side of the rotation center 14 of the movable contact 1 is made smaller than the slit width on the side of the terminal portion 5 to prevent the heat flow and to provide a highly reliable breaking performance. Can be realized.
【0114】実施例18.図26は請求項16の発明の
更に別の実施例による主要部の平面図である。この実施
例では、図25の場合と逆に固定接触子4のスリット4
0の幅を、可動接触子1の回動中心14側が端子部5側
よりも大きくしている。前記スリット40に幅が狭い
程、アークが絶縁物15に触れて冷却される効果が大き
くなる。また、通過電流が大きくなってアーク断面が増
大する場合、アーク断面をスリット40の幅で制限する
ことができ、アーク電圧を一層高くすることが可能にな
る。Example 18. FIG. 26 is a plan view of a main portion according to still another embodiment of the invention of claim 16. In this embodiment, contrary to the case of FIG.
The width of 0 is made larger on the side of the rotation center 14 of the movable contact 1 than on the side of the terminal portion 5. The narrower the width of the slit 40, the greater the effect that the arc touches the insulator 15 and is cooled. When the passing current increases and the arc cross section increases, the arc cross section can be limited by the width of the slit 40, and the arc voltage can be further increased.
【0115】ところで、実際には、可動接触子1が開閉
動作の途中で左右に横ずれを起こすので、このずれ幅を
考慮したスリット幅以下にすることは困難である。Actually, since the movable contact 1 laterally shifts to the left and right during the opening / closing operation, it is difficult to set the width to be equal to or smaller than the slit width in consideration of the shift width.
【0116】実施例19.そこで、図26のように、固
定接触子4の左右のスリット幅を前記ずれ幅より大きく
とり、さらに、固定接触子4より端子部5側のスリット
幅を狭くすることにより、確実な開閉動作が得られ、且
つ、端子部5方向に引き延ばされたアークを絶縁物15
にて冷却すると共に、アーク断面を制限して高い限流性
能を実現することが可能となる。さらに、上述のよう
に、スリット40の幅を奥ほど狭くすると、このスリッ
ト40の内面に対する絶縁物15の取付けが簡単にな
る。Example 19 Therefore, as shown in FIG. 26, the left and right slit widths of the fixed contactor 4 are made larger than the above-mentioned deviation width, and further, the slit width on the terminal portion 5 side of the fixed contactor 4 is narrowed, so that a reliable opening / closing operation can be performed. The arc which is obtained and stretched in the direction of the terminal 5 is made into an insulator 15
It is possible to achieve high current limiting performance by limiting the arc cross section while cooling at. Further, as described above, if the width of the slit 40 is narrowed toward the inner side, the insulator 15 can be easily attached to the inner surface of the slit 40.
【0117】実施例20.図27は請求項17の発明の
実施例による可動接触子の側面図である。この可動接触
子1は、可動接点2より回動中心14側の可動導体1a
の部位1bを、可動接点2の固着面より上方に後退させ
た形状構成としている。Example 20. FIG. 27 is a side view of a movable contactor according to an embodiment of the invention of claim 17. The movable contactor 1 includes a movable conductor 1a located closer to the rotation center 14 than the movable contact 2.
The part 1b is shaped so as to recede above the fixed surface of the movable contact 2.
【0118】一般に、遮断動作時の電流増大に伴ってア
ークスポットの面積が増大し、アーク断面が大きくな
る。このとき、図27のように、前記可動導体1aの部
位1bを上方に後退させていない場合、可動接点2と可
動導体1aの可動接点2より端子部5側の部位1cだけ
では、広がるアークスポットを賄いきれず、可動接点2
より回動中心14側の可動導体1aの部位1bにまで広
がるので、前記可動導体1aが溶融して細くなり、機械
的強度が低下すると共に、遮断動作後の通電時の発熱の
原因となる。さらに、最悪の場合、可動接点2側の可動
導体の一部が脱落し、再投入が不能となる。また、一般
に可動導体1aは銅もしくは銅合金でつくられて可動接
点2より溶融し易いので、前記可動導体1aの部位1b
までアークが広がると、前記可動導体の部位1bから可
動接点2より大量の金属蒸気が発生する。このため、電
流遮断直前における前記可動導体1aの部位1b近傍の
絶縁回復が遅れ遮断不能が生じることがある。Generally, the area of the arc spot increases and the arc cross section increases as the current increases during the breaking operation. At this time, as shown in FIG. 27, when the portion 1b of the movable conductor 1a is not retracted upward, only the movable contact 2 and the portion 1c of the movable conductor 1a on the terminal portion 5 side of the movable contact 2 expands the arc spot. Movable contact 2
Since the movable conductor 1a further spreads to the portion 1b of the movable conductor 1a on the side of the rotation center 14, the movable conductor 1a is melted and becomes thin, which lowers the mechanical strength and causes heat generation during energization after the breaking operation. Furthermore, in the worst case, a part of the movable conductor on the movable contact 2 side is dropped off, and re-entry becomes impossible. Moreover, since the movable conductor 1a is generally made of copper or a copper alloy and is more easily melted than the movable contact 2, the portion 1b of the movable conductor 1a is more likely to melt.
When the arc spreads, a large amount of metal vapor is generated from the movable contact 2 from the movable conductor portion 1b. Therefore, the insulation recovery in the vicinity of the portion 1b of the movable conductor 1a may be delayed immediately before the current is interrupted, and interruption may be impossible.
【0119】このような問題を解決するためには、絶縁
物にて前記可動導体1aの部位1bを覆う方法と、前記
可動導体1aの部位1bをアークから遠ざける方法とが
考えられる。In order to solve such a problem, a method of covering the portion 1b of the movable conductor 1a with an insulator and a method of keeping the portion 1b of the movable conductor 1a away from the arc can be considered.
【0120】実施例20.図28(a)は請求項18の
発明の実施例による主要部の平面図、図28(b)は図
28(a)の側面図である。ところで、図28(a)に
示すように、絶縁物21を可動接触子1に取り付ける
と、可動接触子1の幅が大きくなるので、スリット40
の幅を同図中に破線で示すように広げる必要がある。こ
れに伴って、スリット40の左右の導体部の断面が小さ
くなり、充分な通電性能が得られなくなる。Example 20. 28 (a) is a plan view of a main part according to the embodiment of the invention of claim 18 and FIG. 28 (b) is a side view of FIG. 28 (a). By the way, as shown in FIG. 28A, when the insulator 21 is attached to the movable contactor 1, the width of the movable contactor 1 becomes large, so that the slit 40
It is necessary to widen the width as shown by the broken line in the figure. Along with this, the cross section of the left and right conductor portions of the slit 40 becomes smaller, and sufficient current carrying performance cannot be obtained.
【0121】このような理由により、絶縁物にて前記可
動導体1aの部位1bを覆う方法を用いることが困難な
場合、図27に示すような可動導体1aの部位1bをア
ークから遠ざける可動接触子1の形状が有効となる。For this reason, when it is difficult to use the method of covering the portion 1b of the movable conductor 1a with an insulator, the movable contactor for keeping the portion 1b of the movable conductor 1a away from the arc as shown in FIG. The shape of 1 is effective.
【0122】また、図28の固定接触子4を用いた場
合、電流の増大に伴って広がるアークスポットを、ほぼ
可動接点2および可動導体1aの可動接点2より端子部
5側の部位1cの面積に制限することができるので、ア
ーク電圧を上昇させることが可能となる。Further, when the fixed contactor 4 of FIG. 28 is used, the arc spot which spreads with the increase of the current is approximately the area of the movable contact 2 and the portion 1c of the movable conductor 1a closer to the terminal portion 5 than the movable contact 2. Therefore, the arc voltage can be increased.
【0123】さらに、前記可動導体1aの部位1bを上
方に後退させると、図28(b)に示すように、アーク
発弧直後におけるスリット40の一方の端部42と可動
導体1aとの距離dを長くすることが可能となり、前記
スリット40の一方の端部42と可動導体1aとの間で
の絶縁破壊に伴うアーク電圧の低下を防ぐことが可能と
なる。When the portion 1b of the movable conductor 1a is further retracted upward, as shown in FIG. 28 (b), the distance d between the one end 42 of the slit 40 and the movable conductor 1a immediately after the arc is ignited. Can be made longer, and it is possible to prevent a decrease in arc voltage due to dielectric breakdown between the one end 42 of the slit 40 and the movable conductor 1a.
【0124】実施例22.図29(a)は請求項18の
発明の他の実施例による可動接触子の側面図、図29
(b)が図29(a)のB−B線断面図である。この実
施例による可動接触子1は、可動導体1aの幅を可動接
点2の幅より狭くした構成となっている。この実施例に
よれば、短絡電流の遮断動作時において、可動接触子1
は開離方向に大きな電磁力を受け加速される。Example 22. 29 (a) is a side view of a movable contact according to another embodiment of the invention of claim 18 and FIG.
29B is a sectional view taken along the line BB of FIG. The movable contact 1 according to this embodiment has a structure in which the width of the movable conductor 1 a is narrower than the width of the movable contact 2. According to this embodiment, when the short-circuit current is interrupted, the movable contact 1
Is accelerated by a large electromagnetic force in the opening direction.
【0125】一般に高速に加速された可動接触子1は容
器の一部に設けられたストッパに衝突して停止する。こ
の時、可動接触子1は衝撃的な力を受けるので、機械的
強度が不足している場合、可動導体1aが変形すること
がある。Generally, the movable contactor 1 accelerated at high speed collides with a stopper provided in a part of the container and stops. At this time, the movable contactor 1 receives a shocking force, so that the movable conductor 1a may be deformed if the mechanical strength is insufficient.
【0126】可動接触子1の機械的強度を上げるには、
可動導体1aの断面を大きくすればよいが、可動導体1
aの幅を大きくすると、スリット40の幅が大きくなっ
て限流性能の低下につながる。To increase the mechanical strength of the movable contact 1,
It suffices if the movable conductor 1a has a large cross section.
When the width of a is increased, the width of the slit 40 is increased and the current limiting performance is deteriorated.
【0127】そこで、図29のように、可動導体1aの
左右方向の幅を可動接点2の左右方向の幅より小さく
し、可動導体1aの上下方向の幅にて通電に必要な断面
積および十分な機械的強度を確保するような可動接触子
1の形状が好ましいと考えられる。Therefore, as shown in FIG. 29, the width of the movable conductor 1a in the left-right direction is made smaller than the width of the movable contact 2 in the left-right direction, and the width of the movable conductor 1a in the up-down direction and the cross-sectional area required for energization are sufficient. It is considered that the shape of the movable contactor 1 that secures sufficient mechanical strength is preferable.
【0128】通常、可動接点2は、ろう付け加工により
固着されているが、前述のような可動接触子1の形状に
すると、可動接点2が脱落するのを防止できる。また、
スリット40の幅が小さい程、スリット40の絶縁物の
蒸気によるアーク冷却作用およびアーク断面を制限作用
が大きくなって限流性能が上昇することを先に述べた
が、前記アーク冷却作用を増大させるに伴い大量の蒸気
が発生するので、容器内の圧力が増大し、容器が破損す
ることがある。そのため、スリット40の左右の導体の
通電容量に余裕がある場合、スリット40の幅を比較的
広くして発生圧力を低減させることが考えられる。Normally, the movable contact 2 is fixed by brazing, but the movable contact 2 can be prevented from falling off by forming the movable contact 1 as described above. Also,
As described above, the smaller the width of the slit 40, the greater the effect of the arc cooling by the vapor of the insulator of the slit 40 and the effect of restricting the arc cross section, and the higher the current limiting performance. However, the arc cooling effect is increased. As a result, a large amount of steam is generated, which may increase the pressure in the container and damage the container. Therefore, when there is a margin in the current-carrying capacities of the conductors on the left and right of the slit 40, it is considered that the width of the slit 40 is made relatively wide to reduce the generated pressure.
【0129】スリット40の幅を広くすると、限流性能
が低下するが、可動接点2の回りに絶縁物を配して可動
接触子1側でアーク断面を制限することにより、前記限
流性能の低下を補うことができる。このように、可動接
点2の回りに絶縁物を取り付ける場合、図29のような
固定接点2の幅より幅狭い可動導体1aを用いると、可
動接触子1の幅の増加を比較的小さく抑えて絶縁物を取
り付けることが可能になる。When the width of the slit 40 is widened, the current limiting performance is deteriorated. However, by disposing an insulator around the movable contact 2 to limit the arc cross section on the movable contact 1 side, the current limiting performance can be improved. Can compensate for the decline. As described above, when the insulator is attached around the movable contact 2, by using the movable conductor 1a which is narrower than the width of the fixed contact 2 as shown in FIG. 29, the increase in the width of the movable contact 1 can be suppressed to be relatively small. It becomes possible to attach an insulator.
【0130】上述した図3の実施例では、可動接触子1
の略中央にスリット40を設け、第1導体部4aおよび
第3導体部4dを左右に配置している。このように、2
つの電流経路が略平行に存在する場合の前記電流経路を
流れる電流をつくる磁場の一般的な特性について、以下
に説明する。In the embodiment of FIG. 3 described above, the movable contact 1
A slit 40 is provided substantially at the center, and the first conductor portion 4a and the third conductor portion 4d are arranged on the left and right. Like this, 2
The general characteristics of the magnetic field that creates the current flowing through the current paths when the two current paths are substantially parallel will be described below.
【0131】図30(a)は、可動接触子の回動面左右
の2つの電流経路につくる磁場特性を説明するための簡
略図である。同図(a)において、zx面が可動接触子
の軌跡を含む面に相当し、端子部はx軸の正方向に、可
動接触子の回動中心はx軸の負の方向に、可動接点はz
軸の正方向にそれぞれ位置し、固定接触子の左右導体4
3a,43bの電流路の中心線はxy平面上に2a距離
にて平行に配置されており、前記左右導体43a,43
bはzx平面に対して対称であり、それらの左右導体を
流れる電流I1,I2は−x方向に流れ、大きさは等し
いとすると、y軸の正方向の時な成分がアークを端子部
側(x軸の正方向)に引き延ばすように作用する。この
時、原点0とy軸上の−aの点を結ぶ線とY軸上の−a
の点とz軸上の任意の点P0を結ぶ線の成す角度をθと
すると、点P0におけるY方向磁場Byの変化は、次式
で表わされる。 By=(μI/4πa)sin(2θ) 但し、θの範囲は−90゜<θ<90゜であり、μは透
磁率、電流I=I1+I2である。FIG. 30A is a simplified diagram for explaining the magnetic field characteristics created in the two current paths on the left and right of the rotating surface of the movable contactor. In FIG. 5A, the zx plane corresponds to the plane including the locus of the movable contact, the terminal portion is in the positive direction of the x axis, the center of rotation of the movable contact is in the negative direction of the x axis, and the movable contact is Is z
Left and right conductors 4 of the fixed contact located in the positive direction of the shaft.
The center lines of the current paths 3a and 43b are arranged in parallel on the xy plane at a distance of 2a.
b is symmetric with respect to the zx plane, currents I1 and I2 flowing through the left and right conductors thereof flow in the −x direction, and if the magnitudes are equal, the component in the positive direction of the y axis causes the arc to move toward the terminal portion side. It acts to stretch in the (positive direction of the x-axis). At this time, the line connecting the origin 0 and the −a point on the y axis and −a on the Y axis.
Letting θ be an angle formed by a line connecting the point P and an arbitrary point P0 on the z-axis, the change of the Y-direction magnetic field By at the point P0 is expressed by the following equation. By = (μI / 4πa) sin (2θ) However, the range of θ is −90 ° <θ <90 °, and μ is magnetic permeability and current I = I1 + I2.
【0132】図30(b)は、上式より、角度θとy方
向磁場Byの関係をグラフにした図である。また、図3
0(c)は、z=a・tanθの関係から図30(b)
の横軸をz軸上の長さに変換した図である。図30
(c)から分かるように、zの値が0≦z≦aの領域よ
りa<zの領域におけるzの値の増加に伴うy方向磁場
Byの変化割合が平均して小さい。例えば、y方向磁場
Byがピーク値の80%になる値は、0≦z≦aの領域
ではa/2であり、a<zの領域では2aである。以上
のような、xy平面上の平行な導体とz軸上の点P0の
位置関係を、実際の実施例にあてはめてみると、図31
のようになる。FIG. 30 (b) is a graph showing the relationship between the angle θ and the y-direction magnetic field By from the above equation. Also, FIG.
0 (c) is shown in FIG. 30 (b) from the relationship of z = a · tan θ.
It is the figure which converted the horizontal axis of into the length on az axis. Figure 30
As can be seen from (c), the change rate of the y-direction magnetic field By with the increase of the value of z in the region of a <z is smaller than that of the region of z ≦ 0 ≦ a. For example, the value at which the y-direction magnetic field By reaches 80% of the peak value is a / 2 in the region of 0 ≦ z ≦ a and 2a in the region of a <z. When the above-mentioned positional relationship between the parallel conductors on the xy plane and the point P0 on the z-axis is applied to an actual embodiment, FIG.
become that way.
【0133】実施例23.図31(a)は請求項19お
よび請求項20の発明の実施例による固定接触子の側面
図、図31(b)のC−C線断面図である。この実施例
では、前記C−C線断面をyz平面とし、P1,P2を
左右の第1導体部4aの各断面の重心とし、点P0を固
定接点3表面の中心としている。ここで、角度θが45
゜以上(a≦P0(z))になるように固定接触子4を
構成した場合、スリット40の左右の導体部を流れる電
流によるy方向磁場Byが最大となる点Pmaxは、固
定接点表面より上方のz軸上に位置し、さらに、前記左
右導体部の電流によるy方向磁場Byは固定接点3表面
においてもピーク値とあまり変わらない大きさになる。Example 23. 31 (a) is a side view of a fixed contact according to an embodiment of the invention of claims 19 and 20, and is a sectional view taken along the line CC of FIG. 31 (b). In this embodiment, the cross section along the line CC is the yz plane, P1 and P2 are the centers of gravity of the respective cross sections of the left and right first conductor portions 4a, and the point P0 is the center of the surface of the fixed contact 3. Where the angle θ is 45
In the case where the fixed contactor 4 is configured so that the angle is equal to or more than (° ≦ P0 (z)), the point Pmax at which the y-direction magnetic field By due to the current flowing through the conductors on the left and right of the slit 40 is maximum is the It is located on the upper z-axis, and the y-direction magnetic field By due to the current in the left and right conductors has a magnitude that does not change much from the peak value even on the surface of the fixed contact 3.
【0134】つまり、前記角度θを45゜以上(a≦P
≦0(z))に構成することにより、固定接点表面上お
よびその上方近傍の空間のアーク引き延ばし力を増大さ
せることができ、アーク電圧の立ち上がりを改善でき
る。That is, the angle θ is 45 ° or more (a ≦ P
By configuring ≦ 0 (z), the arc stretching force in the space on the surface of the fixed contact and in the vicinity above the fixed contact can be increased, and the rise of the arc voltage can be improved.
【0135】ところが、角度θを45゜以上(a≦P0
(z))にすると、第2導体部の電流路にも大きなy方
向磁場Byが働き、前記電流路を構成する導体部は下方
に電磁力を受ける。また、第1導体部は第2導体部の電
流路に近づくので、前記第2導体部の電流路に働く電磁
力の反作用として斜め上方に電磁力を受ける。そのた
め、外形寸法、材料コスト、加工技術などの制限から固
定接触子に十分な強度を持たすことができない場合、前
記電磁力により固定接触子が変形することが考えられ
る。However, if the angle θ is 45 ° or more (a ≦ P0
In the case of (z)), a large y-direction magnetic field By also acts on the current path of the second conductor section, and the conductor section forming the current path receives an electromagnetic force downward. Further, since the first conductor portion approaches the current path of the second conductor portion, it receives an electromagnetic force obliquely upward as a reaction of the electromagnetic force acting on the current path of the second conductor portion. Therefore, if the fixed contact cannot have sufficient strength due to restrictions such as external dimensions, material cost, and processing technology, the fixed contact may be deformed by the electromagnetic force.
【0136】そこで、電流を遮断するのに最低必要なア
ークを引き延ばす磁場の効果が得られる場合、前記角度
θ1,θ2を45゜未満(0<0(z)<a)とするこ
とにより、前記電流路にかかるy方向磁場を調整し、前
記変形を防ぐことが可能となる。Therefore, when the effect of the magnetic field extending the arc necessary for interrupting the current is obtained, the angles θ1 and θ2 are set to less than 45 ° (0 <0 (z) <a), The deformation can be prevented by adjusting the y-direction magnetic field applied to the current path.
【0137】図1の実施例では、第3導体部4dにもス
リット40を設けているので、第3導体部4dのスリッ
ト左右の導体部について、第1導体部4aのスリット左
右の導体部と同様の磁場に関する特性が得られる。In the embodiment of FIG. 1, since the slit 40 is also provided in the third conductor portion 4d, the conductor portions on the left and right sides of the slit of the third conductor portion 4d are connected to the conductor portions on the left and right sides of the slit of the first conductor portion 4a. Similar magnetic field characteristics are obtained.
【0138】図32は請求項20の発明の他の実施例に
よる固定接触子の一部を上方から見た図であり、第3導
体部4dのスリット左右の導体断面の重心42を結ぶ線
をy軸とし、y軸を中心としてz軸を−90゜回転させ
たz1 軸が固定接点3表面の中心点P0を通るように、
x1 y1 z1 座標を定める。このとき、図30(c)に
おけるy方向磁場Byとzの関係が、第3導体部4dの
スリット左右の電流がつくるy方向磁場とz1 において
も成立する。FIG. 32 is a view of a part of a fixed contact according to another embodiment of the twentieth aspect of the invention as seen from above, showing a line connecting the center of gravity 42 of the conductor cross section on the left and right of the slit of the third conductor 4d. The z1 axis, which is the y axis and is rotated by 90 degrees about the y axis, passes through the center point P0 of the fixed contact 3 surface.
Determine the x1 y1 z1 coordinates. At this time, the relationship between the y-direction magnetic field By and z in FIG. 30C is also established in the y-direction magnetic field and z1 generated by the currents on the left and right sides of the slit of the third conductor portion 4d.
【0139】図32において、前記角度θ1 を45゜以
上(a1 ≦P0(z))とすると、固定接点3より第3
導体部4d側に前記スリット40の左右導体部の電流に
よるy方向磁場Byのピークが位置し、前記左右導体部
の電流によるy方向磁場Byはこて3表面においてもピ
ーク値とあまり変わらない大きさになる。また、x1 y
1 z1 座標のy1 z1 平面をx1 方向に第3導体部4d
の長さ範囲内にて移動させても、同様の関係が得られ
る。In FIG. 32, if the angle θ1 is 45 ° or more (a1 ≤ P0 (z)), the fixed contact point 3
The y-direction magnetic field By due to the current of the left and right conductors of the slit 40 is located on the conductor 4d side, and the y-direction magnetic field By due to the current of the left and right conductors does not change much from the peak value on the surface of the trowel 3. It will be Also, x1 y
3rd conductor part 4d in the y1 z1 plane of the 1 z1 coordinates in the x1 direction
The same relationship can be obtained by moving within the length range of.
【0140】このような理由により、角度θ1 を45゜
以上(a≦P0(z))に構成すると、固定接点3面上
およびその上方近傍の空間のアーク引き延ばし力を増大
させることができ、アーク電圧の立ち上がりを改善でき
る。さらに、固定接点3より可動接触子の回動中心側に
前記y方向磁場強度Byのピークがあるので、アークが
機構部側に広がり難く、機構部側への熱流を減少させる
ことができる。また、固定接点3より端子部5側にアー
クランナーを設けている場合(固定接点3より端子部5
側に第2導体部4eの導体が延びている場合、固定接点
より端子部側の第2導体部の部位をアークランナーとみ
なす)、アークスポットは固定接点3から端子部5側の
アークランナーへと駆動されるが、アークスポットがア
ークランナーに移っても、前記y方向磁場Byは余り減
少しないので、素早いアーク駆動が可能になると共に、
アークランナーの先端でアークが効果的に引き延ばされ
る。このように、アークをアークランナーに移してアー
クを引き延ばすことにより、固定接点の消耗を低減でき
る。For this reason, when the angle θ1 is set to 45 ° or more (a ≦ P0 (z)), the arc stretching force in the space on the surface of the fixed contact 3 and in the vicinity above the fixed contact 3 can be increased. The rise of voltage can be improved. Furthermore, since the peak of the y-direction magnetic field strength By is located closer to the center of rotation of the movable contact than the fixed contact 3, the arc is less likely to spread to the mechanical section side, and the heat flow to the mechanical section side can be reduced. In addition, when an arc runner is provided on the terminal portion 5 side from the fixed contact 3 (from the fixed contact 3 to the terminal portion 5
When the conductor of the second conductor portion 4e extends to the side, the part of the second conductor portion on the terminal portion side of the fixed contact is regarded as an arc runner), and the arc spot is from the fixed contact 3 to the arc runner on the terminal portion 5 side. However, since the y-direction magnetic field By does not decrease so much even when the arc spot moves to the arc runner, quick arc driving is possible, and
The arc is effectively stretched at the tip of the arc runner. As described above, the wear of the fixed contact can be reduced by transferring the arc to the arc runner and extending the arc.
【0141】ところが、前記アークランナーが存在する
場合の遮断性能に注目すると、角度θを45゜未満(0
<P0(z)<a1 )にする方が好ましい場合が存在す
る。通常電流を遮断する直前のアークはアークランナー
先端に位置しており、その位置におけるアークを電磁力
により如何に引き延ばすかが遮断性能に重要な影響を与
える。However, paying attention to the breaking performance in the presence of the arc runner, the angle θ is less than 45 ° (0
There are cases where it is preferable to satisfy <P0 (z) <a1). The arc just before interrupting the normal current is located at the tip of the arc runner, and how to extend the arc at that position by electromagnetic force has an important effect on the interrupting performance.
【0142】特に、回路電圧が比較的高電圧であり、遮
断する電流値が比較的小さい場合、遮断直前においてア
ークを電磁力で引き延ばす必要がある。そこで、角度θ
1 を45゜未満(0<P0(z)<a1 )とし、アーク
ランナーの先端近傍における第3導体部4dのスリット
40左右の導体部の電流がつくるy方向磁場Byが最大
になるように配置することにより、前記遮断条件におい
ても遮断性能の向上が図れる。In particular, when the circuit voltage is relatively high and the current value for interruption is relatively small, it is necessary to extend the arc by electromagnetic force immediately before interruption. Therefore, the angle θ
1 is less than 45 ° (0 <P0 (z) <a1), and the y-direction magnetic field By created by the current in the conductors on the left and right of the slit 40 of the third conductor 4d near the tip of the arc runner is maximized. By doing so, the breaking performance can be improved even under the breaking conditions.
【0143】実施例24.図33はこの発明の更に異な
った別の実施例による固定接触子を示す斜視図である。
この実施例では、第1導体部4aおよび第3導体部4d
にスリット40を設け、且つ第2導体部4eと第3導体
部4dの接続部位より上方に配置している。このように
すると、図20,図21の実施例のように、第3導体部
4dを長くすることが可能となり、アークを端子部5側
に押し出す力が大きくなる。Example 24. FIG. 33 is a perspective view showing a fixed contact according to still another embodiment of the present invention.
In this embodiment, the first conductor portion 4a and the third conductor portion 4d
The slit 40 is provided in the above, and is arranged above the connection portion between the second conductor portion 4e and the third conductor portion 4d. By doing so, it becomes possible to lengthen the third conductor portion 4d as in the embodiment of FIGS. 20 and 21, and the force of pushing the arc toward the terminal portion 5 side becomes large.
【0144】図34(a)は図33の固定接触子の側面
図、図34(b)は図34(a)のC1−C1線断面
図、図34(c)は図34(a)のC2−C2線断面図
である。この実施例の固定接触子4では、角度θおよび
θ1 が略45゜になるように、固定接点3表面の中心点
P0を配置することにより、固定接点3表面でのy方向
磁場成分をより増大させることが可能となる。FIG. 34 (a) is a side view of the fixed contact of FIG. 33, FIG. 34 (b) is a sectional view taken along the line C1-C1 of FIG. 34 (a), and FIG. 34 (c) is of FIG. 34 (a). It is a C2-C2 sectional view taken on the line. In the fixed contactor 4 of this embodiment, the y-direction magnetic field component on the surface of the fixed contact 3 is further increased by arranging the center point P0 of the surface of the fixed contact 3 so that the angles θ and θ1 are approximately 45 °. It becomes possible.
【0145】実施例25.図35(a)はこの発明の他
の実施例による固定接触子の斜視図、図35(b)は図
35(a)の固定接触子を絶縁した状態の斜視図であ
る。前記図3の固定接触子4では、第1導体部4aと第
3導体部4dとに跨ってスリット40を設けたが、この
実施例25の固定接触子4は、第3導体部4dにスリッ
ト40を殆ど設けない形状構成としている。このよう
に、第3導体部4dのスリット40をなくすと、可動接
触子1の回動中心14側への熱流を防ぐことができると
共に、第3導体部4dの電流によるアーク引き延ばし作
用を増大させることができる。Example 25. FIG. 35 (a) is a perspective view of a fixed contact according to another embodiment of the present invention, and FIG. 35 (b) is a perspective view of the fixed contact of FIG. 35 (a) in an insulated state. In the fixed contactor 4 of FIG. 3, the slit 40 is provided across the first conductor portion 4a and the third conductor portion 4d, but the fixed contactor 4 of this Example 25 has a slit in the third conductor portion 4d. The shape configuration is such that 40 is hardly provided. As described above, by eliminating the slit 40 of the third conductor portion 4d, it is possible to prevent the heat flow toward the rotation center 14 side of the movable contactor 1 and to increase the arc extending action by the current of the third conductor portion 4d. be able to.
【0146】実施例26.図36はこの発明の別の実施
例による固定接触子の斜視図である。この実施例による
固定接触子4は、第1導体部4aと第3導体部4dおよ
び第2導体部4eの一部にスリット40を設けた形状構
成としている。このようなスリット40を設けることに
よって、固定接触子4の曲げ加工が行い易くなる。Example 26. FIG. 36 is a perspective view of a fixed contact according to another embodiment of the present invention. The fixed contactor 4 according to this embodiment has a shape configuration in which a slit 40 is provided in a part of the first conductor portion 4a, the third conductor portion 4d, and the second conductor portion 4e. Providing such slits 40 facilitates bending of the fixed contactor 4.
【0147】実施例27.図37はこの発明の更に別の
実施例による固定接触子の斜視図である。この実施例に
よる固定接触子4は、第1導体部4aの第3導体部4d
側を斜めに形成した形状構成としている。そして、前記
第1導体部4aと第3導体部4dおよび第2導体部4e
の一部に図36の場合と同様にスリット40を設けてい
る。従って、この実施例27にあっても、上記実施例2
6の場合と同様の効果が得られる。Example 27. FIG. 37 is a perspective view of a fixed contact according to still another embodiment of the present invention. The fixed contactor 4 according to this embodiment includes a third conductor portion 4d of the first conductor portion 4a.
The side is formed obliquely. Then, the first conductor portion 4a, the third conductor portion 4d, and the second conductor portion 4e.
A slit 40 is provided in a part of the same as in the case of FIG. Therefore, even in the 27th embodiment,
The same effect as in the case of 6 can be obtained.
【0148】実施例28.図38はこの発明の更に異な
った実施例による固定接触子の斜視図である。この実施
例では、固定接触子1のスリット40の奥部を被覆する
絶縁物15aの高さを高く構成している。このように構
成すると、端子部5側に引き延ばされたアークが押し付
けられる絶縁物の面積が多くなり、アークを冷却する効
果が増大し、アーク電圧が上昇するので、限流性能が向
上する。また、排気孔から端子部5側に引き出すホット
ガスが端子部5に触れるのを防止でき、可動接触子1と
端子部5との間でのアークの発弧に伴うアーク電圧の低
下を防止できる。Example 28. FIG. 38 is a perspective view of a fixed contact according to another embodiment of the present invention. In this embodiment, the height of the insulator 15a that covers the inner part of the slit 40 of the fixed contact 1 is made high. According to this structure, the area of the insulator on which the arc extended to the terminal portion 5 side is pressed is increased, the effect of cooling the arc is increased, and the arc voltage is increased, so that the current limiting performance is improved. . Further, it is possible to prevent the hot gas drawn from the exhaust hole to the terminal portion 5 side from touching the terminal portion 5, and it is possible to prevent the arc voltage between the movable contact 1 and the terminal portion 5 from lowering due to arcing. .
【0149】なお、上記実施例では、回路遮断器の場合
について説明したが、他の開閉器であってもよく、上記
実施例と同様の効果が得られる。Although the circuit breaker has been described in the above embodiments, other switches may be used, and the same effect as that of the above embodiments can be obtained.
【0150】[0150]
【発明の効果】以上のように、請求項1の発明によれ
ば、接点開離直後には固定接触子の全ての電流経路がア
ークを端子部側に引き延ばす電磁力を発生し、急激にア
ーク電圧を立ち上げることができ、さらに、可動接触子
の開離距離が増大しても、スリットの絶縁物によるアー
ク冷却作用により高いアーク電圧を発生、維持できるよ
うに構成したので、優れた限流性能を持った開閉器が得
られる効果がある。As described above, according to the first aspect of the invention, immediately after the contact is opened, all the current paths of the fixed contact generate an electromagnetic force that extends the arc toward the terminal portion, and the arc is suddenly increased. The voltage can be raised, and even if the separation distance of the movable contact is increased, the arc cooling function of the insulator of the slit can generate and maintain a high arc voltage. There is an effect that a switch with high performance can be obtained.
【0151】請求項2の発明によれば、固定接触子がほ
ぼU字形状をなしていることにより、その固定接触子の
成形加工が頗る容易である。また、前記固定接触子にお
ける、固定接点の固着面より上方に位置する導体部位に
可動接触子の開閉動作を許容するスリットを設けたこと
により、前記可動接触子の開閉動作が前記固定接触子に
よって妨げられる恐れがないという効果がある。According to the second aspect of the present invention, since the fixed contact is substantially U-shaped, the fixed contact can be easily molded. Further, by providing a slit in the conductor portion of the fixed contact located above the fixing surface of the fixed contact to allow the opening / closing operation of the movable contact, the opening / closing operation of the movable contact is performed by the fixed contact. The effect is that there is no fear of being hindered.
【0152】請求項3の発明によれば、可動接触子が開
閉動作で描く軌跡の平面の左右どちらか一方に第1導体
部を配置したので、限流性能が優れ、且つ、大電流遮断
時に容器内で発生する圧力による破損が起こり難い開閉
器が得られる効果がある。According to the third aspect of the present invention, the first conductor portion is arranged on either the left or right of the plane of the locus drawn by the movable contact during the opening / closing operation. Therefore, the current limiting performance is excellent and a large current is cut off. This is effective in obtaining a switch that is less likely to be damaged by the pressure generated in the container.
【0153】請求項4の発明によれば、端子部を第1導
体部と面一もしくは上方に配置したので、端子部を流れ
る電流により接点開離直後にアークを引き延ばすことが
でき、限流性能がさらに向上する効果がある。また、端
子部を第1導体部より上方に配置すると、比較的高い電
圧の回路遮断性能が向上する効果がある。さらに、端子
部もしくは端子部の一部を、第1導体部より下方に配置
したので、高いアーク電圧を維持でき、短絡電流遮断時
の通過エネルギーを小さく抑える効果がある。また、端
子部を第1導体部より下方かつ固定接点接触面より上方
に配置したことによって、端子部の電流によりこて表面
近傍のアークを引き延ばすことができ、限流性能が向上
する効果がある。According to the invention of claim 4, since the terminal portion is arranged flush with or above the first conductor portion, the arc can be extended immediately after the contact is opened by the electric current flowing through the terminal portion, and the current limiting performance is improved. Has the effect of further improving. Further, when the terminal portion is arranged above the first conductor portion, there is an effect that the circuit breaking performance of a relatively high voltage is improved. Furthermore, since the terminal portion or a part of the terminal portion is arranged below the first conductor portion, a high arc voltage can be maintained, and there is an effect of suppressing the passing energy at the time of interruption of the short-circuit current to be small. Further, by arranging the terminal portion below the first conductor portion and above the fixed contact contact surface, the arc in the vicinity of the iron surface can be extended by the current of the terminal portion, which has the effect of improving the current limiting performance. .
【0154】請求項5の発明によれば、端子板部を固定
接点接触子より下方に配置したことによって、端子部近
傍でアークを補足する効果が増大するので、アーク電圧
を維持する作用が増大し、遮断動作時の通過エネルギー
を減少させる効果がある。According to the invention of claim 5, since the terminal plate portion is arranged below the fixed contact, the effect of catching the arc in the vicinity of the terminal portion is increased, so that the action of maintaining the arc voltage is increased. However, it has the effect of reducing the passing energy during the interruption operation.
【0155】請求項6の発明によれば、端子部が第1導
体部の下方に位置するように第1導体部に固定接点と反
対側に凸の鈍角な屈曲部を設けたことにより、開極初期
のアーク電圧の立ち上がりを速められ、且つ、高いアー
ク電圧を維持でき、電流性能がより向上する効果がある
と共に、固定接触子の曲げ加工が容易になる効果があ
る。According to the sixth aspect of the invention, since the first conductor portion is provided with the convex obtuse bent portion on the side opposite to the fixed contact so that the terminal portion is located below the first conductor portion, There is an effect that the rising of the arc voltage in the very initial stage can be accelerated, a high arc voltage can be maintained, the current performance can be further improved, and the bending process of the fixed contact can be facilitated.
【0156】請求項7の発明によれば、第2導体部の固
定接点の位置より端子部と反対側の部位に、閉成時の可
動接触子と略平行な部分を持つように構成したので、電
磁力による可動接触子の開極速度の立ち上がりが上昇
し、一層限流性能が向上する効果がある。According to the seventh aspect of the present invention, the second conductor portion is provided with a portion substantially parallel to the movable contact at the time of closing at a portion opposite to the terminal portion from the position of the fixed contact. The rise of the contact opening speed of the movable contact due to the electromagnetic force is increased, and the current limiting performance is further improved.
【0157】請求項8〜請求項10の発明によれば、第
1導体部に鈍角かつ固定接点の反対側に凸の屈曲部を設
けるか、第1導体部と第3導体部を鈍角の屈曲部を介し
て連続させるか、もしくは第3導体部を端子部と反対側
に凸の曲線にて構成することにより、固定接点表面での
アークを引き延ばす磁場成分を増大させることができ、
さらに限流性能が向上する効果がある。また、第3導体
部を端子部と反対側に凸の曲線にて構成したことによ
り、通電容量が大きな開閉器における固定接触子におい
ても容易に加工することが可能となる効果がある。According to the invention of claims 8 to 10, the first conductor portion is provided with an obtuse angle and a convex bent portion on the opposite side of the fixed contact, or the first conductor portion and the third conductor portion are obtusely bent. The magnetic field component for extending the arc on the surface of the fixed contact can be increased by making it continuous through the part or by configuring the third conductor part with a convex curve on the side opposite to the terminal part,
Further, there is an effect that the current limiting performance is improved. Further, since the third conductor portion is formed of a curved line that is convex on the side opposite to the terminal portion, it is possible to easily process a fixed contactor in a switch having a large current carrying capacity.
【0158】請求項11の発明によれば、第1導体部に
固定接触子側に凸の突出部を設け、この突出部の頂点を
固定接点より端子部側に配置したので、アーク電圧の立
ち上がりを改善できると共に、高いアーク電圧を維持で
き、限流性能が向上する効果がある。According to the eleventh aspect of the present invention, since the convex contact portion is provided on the fixed contact side of the first conductor portion and the apex of this protrusion portion is arranged closer to the terminal portion side than the fixed contact, the arc voltage rises. It is possible to improve the current limiting voltage, maintain a high arc voltage, and improve the current limiting performance.
【0159】請求項12の発明によれば、固定接点の接
触面が上下方向の垂線より端子部側に向くように配置し
たので、アークの接点から吹き出す力が大きくなる大電
流領域においても高いアーク電圧を維持でき、短絡遮断
時の通過エネルギーを小さくできる効果がある。According to the twelfth aspect of the invention, since the contact surface of the fixed contact is arranged so as to face the terminal portion side with respect to the vertical line in the vertical direction, a high arc is achieved even in a large current region in which the force ejected from the arc contact is large. The voltage can be maintained, and the passing energy at the time of short circuit interruption can be reduced.
【0160】請求項13の発明によれば、第2導体部の
固定接点が固着されている導体部位が、第2導体部の第
3導体部と連続する端部より上方に位置するように構成
したので、第3導体部の電流によるアーク引き延ばし作
用が増加すると共に、端子部側に押し出されたアークへ
の容器からの圧力反射を防げるので、アークが一層引き
延ばされ易くなり、限流性能がより向上する効果があ
る。また、機構部への熱流の流入を低減することができ
るので、開閉動作の信頼性が向上する効果がある。According to the thirteenth aspect of the invention, the conductor portion to which the fixed contact of the second conductor portion is fixed is located above the end portion of the second conductor portion which is continuous with the third conductor portion. As a result, the arc extending action due to the current in the third conductor portion is increased, and pressure reflection from the container to the arc extruded to the terminal portion side can be prevented, so that the arc is more easily extended and the current limiting performance is improved. Has the effect of improving. Further, since the inflow of heat flow into the mechanism section can be reduced, there is an effect that the reliability of the opening / closing operation is improved.
【0161】請求項14によれば、第1導体部と第3導
体部を鋭角の屈曲部を介して連続させることにより、可
動接触子にかかる開極を促進する電磁力を開極動作後半
まで可動接触子に与えることができるようにしたので、
比較的高い電源電圧の回路における遮断性能を向上させ
る効果がある。According to the fourteenth aspect, by making the first conductor portion and the third conductor portion continuous through the bent portion having an acute angle, an electromagnetic force for promoting the contact opening applied to the movable contact is applied until the latter half of the contact opening operation. Since it can be given to the movable contact,
This has the effect of improving the breaking performance in a circuit with a relatively high power supply voltage.
【0162】請求項15によれば、可動接触子が描く軌
跡を含む面上に、第2導体部の中心線が位置するように
し、さらに前記第2導体部の第3導体部の一端部の幅よ
り固定接点が固着されている他端部側の幅を小さくして
電流を中心線上に集中するようにしたので、アークを引
き延ばし、且つ、可動接触子を開極させる磁場成分が増
大すると共に、アークスポットの大きさを制限できるの
で、限流性能がさらに向上する効果がある。According to the fifteenth aspect, the center line of the second conductor portion is positioned on the plane including the locus drawn by the movable contact, and the one end portion of the third conductor portion of the second conductor portion is further positioned. Since the width of the other end side where the fixed contact is fixed is made smaller than the width to concentrate the current on the center line, the magnetic field component that extends the arc and opens the movable contact increases. Since the size of the arc spot can be limited, the current limiting performance is further improved.
【0163】請求項16によれば、可動接触子の開閉動
作を妨げないようにするためのスリットを有し、且つ、
略左右対称な第1導体部を備え、前記スリットの端子部
と反対側の幅を端子部側の幅より小さくしたので、機構
部側への熱流を減少させることができ、遮断動作後に再
投入不能となることを防げ、開閉動作の信頼性の高い開
閉器を得ることができるという効果がある。一方、前記
スリットの端子部側の幅を端子部と反対側の幅より小さ
くすると、絶縁物による冷却効果を高めることができ、
限流性能がさらに向上する効果がある。According to the sixteenth aspect, there is provided a slit for not obstructing the opening / closing operation of the movable contact, and
Since the width of the slit on the side opposite to the terminal portion is smaller than the width on the terminal portion side, the first conductor portion having a substantially left-right symmetry is provided, so that the heat flow to the mechanism portion can be reduced, and the slit is re-injected after the operation. There is an effect that it is possible to obtain a switch having a highly reliable opening / closing operation, which can be prevented from becoming impossible. On the other hand, if the width of the slit on the side of the terminal portion is smaller than the width on the side opposite to the terminal portion, the cooling effect by the insulator can be enhanced,
This has the effect of further improving current limiting performance.
【0164】請求項17によれば、可動接点より可動導
体の可動接点が固着されていない他端部側で、且つ可動
接点のすぐ横の可動導体の部位を、可動接点の固着面よ
り後退させたので、可動接触子の溶断を防ぐと共に、絶
縁回復の遅れに伴う遮断不能を防ぐ効果がある。According to the seventeenth aspect, the portion of the movable conductor on the other end side where the movable contact of the movable conductor is not fixed to the movable contact and immediately next to the movable contact is retracted from the fixed surface of the movable contact. Therefore, it is effective in preventing melting of the movable contactor and preventing inability to cut off due to delay in insulation recovery.
【0165】請求項18の発明によれば、可動接触子の
一部を成す可動導体の左右方向の幅を、可動接点の幅よ
り小さく構成したので、可動接点の脱落を防ぐ効果と共
に、可動接触子の上下方向の機械的強度が増大し、可動
接触子の変形を防ぐ効果がある。According to the eighteenth aspect of the present invention, since the width of the movable conductor forming a part of the movable contact in the left-right direction is smaller than the width of the movable contact, the movable contact can be prevented from falling off and the movable contact can be prevented. The mechanical strength of the child in the vertical direction is increased, and deformation of the movable contactor is prevented.
【0166】請求項19および請求項20の発明によれ
ば、可動接触子の開閉動作を妨げないように、可動接触
子が描く軌跡を含む面に沿ったスリットを有する第1導
体部を備え、固定接点表面の中心点P0を含み、且つ、
前記軌跡を含む面および前記第1導体部の電流路に垂直
な断面において、前記スリット左右の各々の第1導体部
断面の重心P1とP2を結ぶ線と、前記中心点P0と前
記重心P1および重心P2を各々結ぶ線の成す前記軌跡
を含む面側の角度θ1とθ2が45゜以上になるように
配置したので、固定接点面上およびその上方近傍の空間
のアークを引き延ばす力を増大させ、アーク電圧の立ち
上がりを改善できるので、限流性能を更に向上させる効
果がある。一方、角度θ1とθ2を45゜未満にする
と、固定接触子の各部位にかかる電磁力を小さくできる
ので、十分な機械的強度が得られない場合の固定接触子
の変形を防ぐ効果がある。According to the nineteenth and twentieth aspects of the invention, there is provided the first conductor portion having the slit along the surface including the locus drawn by the movable contact so as not to hinder the opening / closing operation of the movable contact. Including the center point P0 of the fixed contact surface, and
In a cross section perpendicular to the plane including the locus and the current path of the first conductor portion, a line connecting the centroids P1 and P2 of the cross sections of the first conductor portions on the left and right of the slit, the center point P0, and the centroid P1. Since the angles θ1 and θ2 on the surface side including the locus formed by the lines connecting the centers of gravity P2 are arranged to be 45 ° or more, the force for extending the arc in the space on the fixed contact surface and in the vicinity above the fixed contact surface is increased, Since the rise of the arc voltage can be improved, it has the effect of further improving the current limiting performance. On the other hand, if the angles θ1 and θ2 are less than 45 °, the electromagnetic force applied to each part of the fixed contact can be reduced, so that the deformation of the fixed contact can be prevented when sufficient mechanical strength cannot be obtained.
【0167】請求項21の発明によれば、可動接触子の
開閉動作を妨げないように、可動接触子が描く軌跡を含
む面に沿ったスリットを有する第3導体部を備え、前記
軌跡を含む面および前記第3導体部の電流路に垂直な断
面S0において、前記スリット左右の各々の第3導体部
断面の重心P1とP2を結ぶ線と、固定接点表面の中心
点P0から上方に伸ばした垂線が前記断面S0と交わる
点PO1 と前記重心P1および重心P2を各々結ぶ線の
成す前記軌跡を含む面側の角度θ1とθ2が45゜以上
になるように配置したので、固定接点面上およびその上
方近傍の空間のアークを引き延ばす力を増大させアーク
電圧の立ち上がりを改善できるので、限流性能を更に向
上させる効果がある。一方、角度θ1とθ2を45゜未
満にすると、固定接点より端子部側に移動した遮断直前
の固定接触子側のアークスポットおよびその上方近傍の
空間のアークを引き延ばす磁場成分を略最大にすること
ができ、遮断性能が向上する効果がある。According to the twenty-first aspect of the invention, the third conductor portion having the slit along the surface including the locus drawn by the movable contact is provided so as not to hinder the opening / closing operation of the movable contact, and the locus is included. In a plane S0 and a cross section S0 perpendicular to the current path of the third conductor, the line connecting the centers of gravity P1 and P2 of the cross sections of the third conductors on the left and right of the slit and the center point P0 of the fixed contact surface are extended upward. Since the angle θ1 and θ2 on the surface side including the locus formed by the line connecting the center of gravity P1 and the center of gravity P2 with the point PO 1 where the perpendicular intersects the cross section S0 and the center of gravity P1 and the center of gravity P2 are 45 ° or more, Also, since the force of extending the arc in the space near and above it can be increased and the rise of the arc voltage can be improved, there is an effect of further improving the current limiting performance. On the other hand, if the angles θ1 and θ2 are set to less than 45 °, the magnetic field component that extends the arc spot on the fixed contact side just before breaking and the arc in the space above the fixed contact moved to the terminal side from the fixed contact is maximized. It has the effect of improving the blocking performance.
【図1】請求項1の発明の一実施例による回路遮断器の
閉成状態を示す消弧部の側面図である。FIG. 1 is a side view of an arc extinguishing section showing a closed state of a circuit breaker according to an embodiment of the present invention.
【図2】図1の回路遮断の開成状態を示す側面図であ
る。FIG. 2 is a side view showing an open state of the circuit breaker of FIG.
【図3】図3(a)は図1の固定接触子を示す斜視図で
ある。図3(b)は図3(a)の固定接触子を絶縁した
状態を示す斜視図である。3 (a) is a perspective view showing the fixed contact of FIG. 1. FIG. FIG. 3B is a perspective view showing a state in which the fixed contactor of FIG. 3A is insulated.
【図4】図1の回路遮断器の接点回路食後の状態を示す
動作説明図である。FIG. 4 is an operation explanatory view showing a state after the contact circuit of the circuit breaker of FIG. 1 has been eaten.
【図5】図5(a)は図2の固定接触子を流れる電流が
発生する磁場強度分布の説明図である。図5(b)は図
5(a)のA−A線断面図である。図5(c)は図5
(b)のZ軸上において固定接触子を流れる電流がつく
る磁場強度分布を示すグラフ図である。5 (a) is an explanatory diagram of a magnetic field strength distribution generated by a current flowing through the fixed contact of FIG. FIG. 5B is a sectional view taken along the line AA of FIG. FIG. 5C shows FIG.
It is a graph which shows the magnetic field strength distribution which the electric current which flows through a fixed contact makes on the Z-axis of (b).
【図6】図1の回路遮断器の可動接触子の最大開離状態
を示す動作説明図である。FIG. 6 is an operation explanatory view showing the maximum open state of the movable contactor of the circuit breaker of FIG. 1.
【図7】図7(a)は請求項1の他の実施例による固定
接触子の斜視図である。図7(b)は図7(a)の固定
接触子を絶縁した状態の斜視図である。FIG. 7 (a) is a perspective view of a fixed contact according to another embodiment of claim 1. FIG. FIG. 7B is a perspective view showing a state in which the fixed contact of FIG. 7A is insulated.
【図8】図8(a)は図7(b)の固定接触子を採用し
た回路遮断器の接点開離直後の状態を示す主要部の側面
図である。図8(b)は図8(a)の接点最大開離状態
を示す主要部の側面図である。8 (a) is a side view of a main portion showing a state immediately after contact opening of a circuit breaker adopting the fixed contact of FIG. 7 (b). FIG. 8B is a side view of the main part showing the contact maximum open state of FIG.
【図9】請求項4の発明の一実施例による要部の側面図
である。FIG. 9 is a side view of a main part according to an embodiment of the invention of claim 4;
【図10】請求項4の発明の他の実施例による要部の側
面図である。FIG. 10 is a side view of a main part according to another embodiment of the invention of claim 4;
【図11】請求項4の発明の別の実施例および請求項5
の発明の一実施例による要部の側面図である。11 is another embodiment of the invention of claim 4 and claim 5;
FIG. 3 is a side view of the main part according to an embodiment of the invention of FIG.
【図12】請求項6の発明の一実施例による主要部の側
面図である。FIG. 12 is a side view of a main part according to an embodiment of the invention of claim 6;
【図13】請求項6の発明の他の実施例による主要部の
側面図である。FIG. 13 is a side view of a main part according to another embodiment of the invention of claim 6;
【図14】請求項7の発明の一実施例による主要部の側
面図である。FIG. 14 is a side view of a main part according to an embodiment of the invention of claim 7;
【図15】請求項8の発明の一実施例による主要部の側
面図である。FIG. 15 is a side view of a main part according to an embodiment of the invention of claim 8;
【図16】請求項9の発明の一実施例による主要部の側
面図である。FIG. 16 is a side view of a main part according to an embodiment of the invention of claim 9;
【図17】請求項10の発明の一実施例による主要部の
側面図である。FIG. 17 is a side view of a main part according to an embodiment of the invention of claim 10;
【図18】図18(a)は請求項11の発明の一実施例
による接点開離直後の状態を示す主要部の側面図であ
る。図18(b)は図18(a)の接点最大開離状態を
示す主要部の側面図である。FIG. 18 (a) is a side view of a main portion showing a state immediately after contact opening according to an embodiment of the invention of claim 11; FIG. 18B is a side view of the main part showing the contact maximum open state of FIG.
【図19】請求項12の発明の一実施例による主要部の
側面図である。FIG. 19 is a side view of a main part according to an embodiment of the invention of claim 12;
【図20】請求項13の発明の一実施例による主要部の
側面図である。FIG. 20 is a side view of a main part according to an embodiment of the invention of claim 13;
【図21】請求項14の発明の一実施例による主要部の
側面図である。FIG. 21 is a side view of a main part according to an embodiment of the invention of claim 14;
【図22】請求項15の発明の一実施例による主要部の
側面図である。FIG. 22 is a side view of a main part according to an embodiment of the invention of claim 15;
【図23】図22の第2導体部を上方から見た図であ
る。23 is a view of the second conductor portion of FIG. 22 as seen from above.
【図24】図24(a)は請求項16の発明の一実施例
による可動接触子と固定接触子を上方から見た図であ
る。図24(b)は図24(b)の側面図である。FIG. 24 (a) is a view of a movable contact and a fixed contact according to an embodiment of the invention of claim 16 as seen from above. FIG. 24 (b) is a side view of FIG. 24 (b).
【図25】請求項16の発明の他の実施例による可動接
触子と固定接触子を上方から見た図である。FIG. 25 is a view of a movable contact and a fixed contact according to another embodiment of the invention of claim 16 as seen from above.
【図26】請求項16の発明の更に別の実施例による可
動接触子と固定接触子を上方から見た図である。FIG. 26 is a view of a movable contactor and a fixed contactor according to still another embodiment of the sixteenth invention as viewed from above.
【図27】請求項17の発明の一実施例による可動接触
子の側面図である。FIG. 27 is a side view of a movable contactor according to an embodiment of the invention of claim 17;
【図28】図28(a)は請求項18の発明の一実施例
による主要部の平面図である。図28(b)は図28
(a)の側面図である。FIG. 28 (a) is a plan view of a main part according to an embodiment of the invention of claim 18; 28 (b) is shown in FIG.
It is a side view of (a).
【図29】図29(a)は請求項18の発明の他の実施
例による可動接触子の側面図である。図29(b)は図
29(a)のB−B線断面図である。FIG. 29 (a) is a side view of a movable contactor according to another embodiment of the invention of claim 18; 29B is a sectional view taken along the line BB of FIG.
【図30】図30(a)は平行電流の対称面における一
般的な磁場特性の説明図である。図30(b)は図30
(c)における角度θとy方向磁場Byとの関係を表わ
すグラフ図である。図30(c)はz=a・tanθの
関係から図30(b)の横軸をz軸上の長さに変換した
グラフ図である。FIG. 30 (a) is an explanatory diagram of general magnetic field characteristics on a plane of symmetry of a parallel current. 30 (b) is shown in FIG.
FIG. 7 is a graph showing the relationship between the angle θ and the y-direction magnetic field By in (c). FIG. 30C is a graph diagram in which the horizontal axis of FIG. 30B is converted to the length on the z axis from the relationship of z = a · tan θ.
【図31】図31(a)は請求項19および請求項20
の発明の一実施例による固定接触子の側面図である。図
31(b)は図31(a)のC−C線断面図である。FIG. 31 (a) shows claims 19 and 20.
FIG. 6 is a side view of a fixed contact according to an embodiment of the invention. 31B is a cross-sectional view taken along the line CC of FIG.
【図32】請求項21の発明の一実施例による固定接触
子の一部を上方から見た図である。FIG. 32 is a diagram showing a part of a fixed contact according to an embodiment of the invention of claim 21 as seen from above.
【図33】この発明の別の実施例による固定接触子の斜
視図である。FIG. 33 is a perspective view of a fixed contact according to another embodiment of the present invention.
【図34】図34(a)は図33の固定接触子の側面図
である。図34(b)は図34(a)のC1−C1線断
面図である。図34(c)は図34(a)のC2−C2
線断面図である。34 (a) is a side view of the fixed contact shown in FIG. 33. FIG. 34B is a cross-sectional view taken along the line C1-C1 of FIG. FIG. 34C shows C2-C2 of FIG.
It is a line sectional view.
【図35】図35(a)はこの発明の更に別の実施例に
よる固定接触子の斜視図である。図35(b)は図35
(a)の固定接触子を絶縁した状態を示す斜視図であ
る。FIG. 35 (a) is a perspective view of a fixed contact according to still another embodiment of the present invention. 35 (b) is shown in FIG.
It is a perspective view showing the state where the fixed contact child of (a) was insulated.
【図36】この発明の更に他の実施例による固定接触子
の斜視図である。FIG. 36 is a perspective view of a fixed contact according to still another embodiment of the present invention.
【図37】図36の固定接触子の変形例を示す斜視図で
ある。FIG. 37 is a perspective view showing a modified example of the fixed contactor of FIG. 36.
【図38】この発明の更に異なった実施例による固定接
触子の斜視図である。FIG. 38 is a perspective view of a fixed contact according to still another embodiment of the present invention.
【図39】従来の回路遮断器の開成状態を示す側面図で
ある。FIG. 39 is a side view showing an open state of a conventional circuit breaker.
【図40】図39の回路遮断器の接点開離直後の状態を
示す側面図である。40 is a side view showing a state immediately after contact opening of the circuit breaker of FIG. 39. FIG.
【図41】図40の回路遮断器における可動接触子の最
大開離状態を示す側面図である。41 is a side view showing the maximum open state of the movable contactor in the circuit breaker of FIG. 40. FIG.
1 可動接触子 2 可動接点 3 固定接点 4 固定接触子 4a 第1導体部 4d 第3導体部 4e 第2導体部 5 端子部 15 絶縁物 DESCRIPTION OF SYMBOLS 1 movable contactor 2 movable contact point 3 fixed contact point 4 fixed contactor 4a first conductor portion 4d third conductor portion 4e second conductor portion 5 terminal portion 15 insulator
───────────────────────────────────────────────────── フロントページの続き (72)発明者 仁科 健一 福山市緑町1番8号 三菱電機株式会社福 山製作所内 (72)発明者 山県 伸示 福山市緑町1番8号 三菱電機株式会社福 山製作所内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Kenichi Nishina Kenichi Nishina 1-8 Midoricho, Fukuyama City Mitsubishi Electric Co., Ltd. Fukuyama Factory (72) Inventor Shinichi Yamaguchi 1-8 Midoricho, Fukuyama City Fukuyama Works Mitsubishi Electric Corporation Within
Claims (21)
と、この可動接触子の開閉動作で前記可動接点と接離可
能な固定接点を一端部に有する固定接触子と、この固定
接触子の他端部に接続する端子部とを備えた開閉器にお
いて、接点閉成状態の前記可動接点が前記固定接点から
開離する方向を上方とした時、前記固定接触子を、前記
端子部と接続する第1導体部、前記固定接点を有する第
2導体部、及び第1導体部と第2導体部を上下方向に接
続する第3導体部で構成し、第3導体部を前記固定接点
の位置より可動接触子の可動接点が設けられていない他
端部側で且つ前記端子部の反対側に配置し、第1導体部
を、前記接点閉成時の該接点接触面より上方に配置する
と共に、前記接点開成時に前記可動接点の接触面より下
方に配置し、前記接点開成時に前記可動接点表面から見
渡せる前記第1導体部の部位を絶縁物で被覆したことを
特徴とする開閉器。1. A movable contact having a movable contact at one end, a fixed contact having at one end a fixed contact that can be brought into contact with and separated from the movable contact by opening and closing the movable contact, and a fixed contact of the fixed contact. In a switch having a terminal part connected to the other end, when the direction in which the movable contact in the contact closed state separates from the fixed contact is upward, the fixed contact is connected to the terminal part. A first conductor portion, a second conductor portion having the fixed contact, and a third conductor portion that vertically connects the first conductor portion and the second conductor portion, and the third conductor portion is located at the fixed contact position. The movable contact of the movable contactor is disposed on the other end side where the movable contact is not provided and on the opposite side of the terminal portion, and the first conductor portion is disposed above the contact contact surface when the contact is closed. The contact is arranged below the contact surface of the movable contact when the contact is opened, A switch which is characterized in that a portion of the first conductor portion that can be seen from the surface of the movable contact at the time of opening is covered with an insulator.
た接続導体部位を有し、そのU字形状の一端部の内側に
固定接点が固着され、且つ、前記U字形状の他端部に端
子部が接続されているもので、前記固定接点の固着面よ
り上方に位置する接続導体の部位には、前記固定接触子
に対する可動接触子の開閉動作を許容するためのスリッ
トが設けられていることを特徴とする請求項1記載の開
閉器。2. The fixed contact has a substantially U-shaped connecting conductor portion, a fixed contact is fixed to the inside of one end of the U-shape, and the other end of the U-shape is formed. A terminal portion is connected to the fixed contact, and a slit for allowing the opening / closing operation of the movable contact with respect to the fixed contact is provided at a portion of the connection conductor located above the fixing surface of the fixed contact. The switch according to claim 1, wherein the switch is provided.
作で描く軌跡の平面の左右どちらか一方で、前記固定接
点より上方に位置する第1導体部が形成されていること
を特徴とする請求項1記載の開閉器。3. The fixed contact is characterized in that a first conductor portion located above the fixed contact is formed on one of left and right of a plane of a locus drawn by the movable contact by an opening / closing operation. The switch according to claim 1.
記第1導体部と面一、または、その第1導体部より上
方、もしくは、前記第1導体部より下方に位置するよう
に形成され、前記第1導体部の下方に位置する端子部
は、接点閉成状態の時の接点接触面より上方に位置して
いることを特徴とする請求項1記載の開閉器。4. The terminal portion connected to the fixed contact is formed so as to be flush with the first conductor portion or above the first conductor portion or below the first conductor portion. The switch according to claim 1, wherein the terminal portion located below the first conductor portion is located above a contact contact surface when the contact is closed.
接続されるリード部と、外部電路に接続される端子板部
とで構成され、前記端子板部を接点閉成状態の時の接点
接触面より下方に配置したことを特徴とする請求項1記
載の開閉器。5. The terminal portion includes a lead portion connected to the first conductor portion of the fixed contact and a terminal plate portion connected to an external electric circuit, and the terminal plate portion is in a contact closed state. The switch according to claim 1, wherein the switch is arranged below a contact surface of the contact.
とを接続する第1導体部に、鈍角で且つ固定接点と反対
側に凸の屈曲部が設けられ、前記第1導体部の前記屈曲
部より端子部と反対側の部位が固定接点を有する第2導
体部とほぼ平行していることを特徴とする請求項1記載
の開閉器。6. The fixed contact has a first conductor portion connecting the terminal portion and the fixed contact with a bent portion having an obtuse angle and a side opposite to the fixed contact. The switch according to claim 1, wherein a portion of the bent portion opposite to the terminal portion is substantially parallel to the second conductor portion having the fixed contact.
接続する接続導体のうち、固定接点にすぐ接続される部
分で、固定接点の位置より端子部と反対側に、閉性時の
可動接触子とほぼ平行な部分を持つていることを特徴と
する請求項1記載の開閉器。7. The fixed contact is a portion of a connection conductor that connects the terminal portion and the fixed contact, which is immediately connected to the fixed contact, and is movable from the position of the fixed contact to the side opposite to the terminal portion when closed. The switch according to claim 1, wherein the switch has a portion substantially parallel to the contact.
とを接続する第1導体部に、鈍角で且つ固定接点の反対
側に凸の屈曲部が設けられ、前記第1導体部の前記屈曲
部より端子部側の部位を固定接点が固着された第2導体
部とほぼ平行させたことを特徴とする請求項1記載の開
閉器。8. The fixed contact has a first conductor portion connecting the terminal portion and the fixed contact with a bent portion having an obtuse angle and opposite to the fixed contact. 2. The switch according to claim 1, wherein a portion closer to the terminal portion than the bent portion is made substantially parallel to the second conductor portion to which the fixed contact is fixed.
体部を鈍角の屈曲部を介して連続させると共に、第3導
体部と第2導体部を鋭角の屈曲部を介して連続させ、前
記鈍角および前記鋭角が固定接点と反対側に凸になるよ
うに配置したことを特徴とする請求項1記載の開閉器。9. The fixed contact is such that the first conductor portion and the third conductor portion are continuous with each other through an obtuse-angled bent portion, and the third conductor portion and the second conductor portion are continuous with each other through an acute-angled bent portion. The switch according to claim 1, wherein the obtuse angle and the acute angle are arranged so as to be convex on the side opposite to the fixed contact.
部と反対側に凸の曲線で形成されていることを特徴とす
る請求項1記載の開閉器。10. The switch according to claim 1, wherein in the fixed contactor, the third conductor portion is formed as a convex curve on the side opposite to the terminal portion.
接触子側へ凸の突出部が設けられ、この突出部の頂点が
固定接点より端子部側に位置していることを特徴とする
請求項1記載の開閉器。11. The fixed contact is characterized in that a protrusion protruding toward the fixed contact is provided on the first conductor portion, and the apex of the protrusion is located closer to the terminal than the fixed contact. The switch according to claim 1.
が上下方向の垂線より端子部側に向くように、第2導体
部の固定接点が設けられた一端部を他端部より下方に位
置させた形状になっていることを特徴とする請求項1記
載の開閉器。12. The fixed contact has one end portion, where the fixed contact of the second conductor portion is provided, located below the other end portion such that the contact surface of the fixed contact faces the terminal portion side from a vertical line in the vertical direction. The switch according to claim 1, wherein the switch has a shape that is positioned.
接点が固着されている導体部位が、第2導体部の第3導
体部と連続する端部より上方に位置するように形成され
ていることを特徴とする請求項1記載の開閉器。13. The fixed contact is formed such that a conductor portion to which a fixed contact of the second conductor portion is fixed is located above an end portion of the second conductor portion which is continuous with the third conductor portion. The switch according to claim 1, wherein the switch is provided.
導体部とが鋭角の屈曲部を介して連続し、且つ、第3導
体部と第2導体部とが鈍角の屈曲部を介して連続し、前
記鈍角および前記鋭角が固定接点と反対側に凸となるよ
うに形成されていることを特徴とする請求項1記載の開
閉器。14. The fixed contact includes a first conductor portion and a third conductor portion.
The conductor portion is continuous through a bent portion with an acute angle, the third conductor portion and the second conductor portion are continuous through a bent portion with an obtuse angle, and the obtuse angle and the acute angle are convex to the side opposite to the fixed contact. The switch according to claim 1, wherein the switch is formed as follows.
動作により描く軌跡を含む面上に、第2導体部の中心線
が位置し、且つ、前記第2導体部の第3導体部側の一端
部の幅より、固定接点が固着されている他端部側の幅を
小さく形成されていることを特徴とする請求項1記載の
開閉器。15. The fixed contact is such that the center line of the second conductor is located on a plane including the locus drawn by the movable contact by the opening / closing operation, and the third conductor of the second conductor is closer to the center. 2. The switch according to claim 1, wherein the width of the other end side to which the fixed contact is fixed is smaller than the width of one end of the switch.
動作を妨げないように、可動接触子が描く軌跡を含む面
に沿ったスリットを有する第1導体部を備え、前記第1
導体部を前記軌跡を含む面に対してほぼ対称な形成する
と共に、前記スリットの左右の導体部をほぼ平行に形成
するか、または、前記スリットの端子部と反対側の幅を
端子部側の幅より小さく形成し、あるいは、前記スリッ
トの端子部側の幅を端子部と端子部と反対側の幅より小
さく形成してなることを特徴とする請求項1記載の開閉
器。16. The fixed contact includes a first conductor portion having a slit along a surface including a locus drawn by the movable contact so as not to hinder the opening / closing operation of the movable contact.
The conductor part is formed substantially symmetrical with respect to the plane including the locus, and the left and right conductor parts of the slit are formed substantially parallel to each other, or the width of the slit on the side opposite to the terminal part is equal to that of the terminal part side. 2. The switch according to claim 1, wherein the switch is formed to be smaller than the width, or the width of the slit on the terminal portion side is smaller than the width of the terminal portion and the side opposite to the terminal portion.
れていない他端部側で、且つ、前記可動接点のすぐ横の
可動導体の部位を、前記可動接点の固着面より後退させ
たことを特徴とする請求項1記載の開閉器。17. The movable contact is such that the movable conductor portion on the other end side where the movable contact is not fixed, and right next to the movable contact is set back from the fixed surface of the movable contact. The switch according to claim 1, wherein:
を含む面に垂直な方向を左右方向とした時、可動接触子
の一部を成す可動導体の左右方向の幅を、可動接点の幅
より小さく構成したことを特徴とする請求項1記載の開
閉器。18. When the direction perpendicular to the plane containing the locus of the movable contact drawn by the opening and closing operation is the left-right direction, the width of the movable conductor forming a part of the movable contact in the left-right direction is the width of the movable contact. The switch according to claim 1, wherein the switch is made smaller.
開閉動作で描く軌跡を含む面に沿ったスリットを有する
第1導体部を備え、固定接点表面の中心点P0を含み、
かつ前記軌跡を含む面および前記第1導体部の電流路に
垂直な断面において、前記スリット左右の各々の第1導
体部断面の重心P1とP2を結ぶ線と、前記中心点P0
と前記重心P1および重心P2を各々結ぶ線の成す前記
軌跡を含む面側の角度θ1とθ2が45゜以上になるよ
うに配置したことを特徴とする請求項1記載の開閉器。19. The fixed contact includes a first conductor portion having a slit along a surface including a locus drawn by the movable contact in an opening / closing operation, and includes a center point P0 of a fixed contact surface,
In addition, in a cross section perpendicular to the plane including the locus and the current path of the first conductor portion, a line connecting the centers of gravity P1 and P2 of the cross sections of the first conductor portions on the left and right of the slit, and the center point P0.
2. The switch according to claim 1, wherein the switches are arranged so that the angles θ1 and θ2 on the surface side including the locus formed by the lines connecting the center of gravity P1 and the center of gravity P2 are 45 ° or more.
開閉動作で描く軌跡を含む面に沿ったスリットを有する
第1導体部を備え、固定接点表面の中心点P0を含み、
かつ前記軌跡を含む面および前記第1導体部の電流路に
垂直な断面において、前記スリット左右の各々の第1導
体部断面の重心P1とP2を各々結ぶ線の成す前記軌跡
を含む面側の角度θ1とθ2が45゜未満になるように
配置したことを特徴とする請求項1記載の開閉器。20. The fixed contact includes a first conductor portion having a slit along a surface including a locus drawn by the movable contact in an opening / closing operation, and includes a center point P0 of a fixed contact surface,
In addition, in the plane including the locus and the cross section perpendicular to the current path of the first conductor portion, the side of the plane including the locus formed by the lines connecting the centroids P1 and P2 of the cross sections of the first conductor portions on the left and right sides of the slit, respectively. The switch according to claim 1, wherein the switches are arranged such that the angles θ1 and θ2 are less than 45 °.
開閉動作で描く軌跡を含む面に沿ったスリットを有する
第3導体部を備え、前記軌跡を含む面および前記第3導
体部の電流路に垂直な断面において、前記スリット左右
の各々の第3導体部断面の重心P1とP2を各々結ぶ線
と、固定接点表面の中心点P0から上方に伸ばした垂線
が前記断面と交わる点PO1 と前記重心P1および重心
P2を各々結ぶ線の成す前記軌跡を含む面側の角度θ1
とθ2が45゜以上、または45゜未満になるように配
置したことを特徴とする請求項1記載の開閉器。21. The fixed contact includes a third conductor portion having a slit along a surface including a locus drawn by the movable contact during opening and closing operations, and a current including the surface including the locus and the current of the third conductor portion. In a cross section perpendicular to the path, a line connecting the centers of gravity P1 and P2 of the cross sections of the respective third conductors on the left and right of the slit and a point PO 1 where a perpendicular line extending upward from the center point P0 of the fixed contact surface intersects with the cross section And the angle θ1 on the plane side including the locus formed by the lines connecting the center of gravity P1 and the center of gravity P2.
2. The switch according to claim 1, wherein the switch is arranged such that the angle θ2 is 45 ° or more or less than 45 °.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4197444A JP3034697B2 (en) | 1992-07-02 | 1992-07-02 | Switch |
TW082102276A TW409265B (en) | 1992-07-02 | 1993-03-26 | Circuit breaker |
US08/076,741 US5583328A (en) | 1992-07-02 | 1993-06-15 | High voltage switch including U-shaped, slitted stationary contact assembly with arc extinguishing/magnetic blowout features |
EP93110049A EP0576992B1 (en) | 1992-07-02 | 1993-06-23 | Switch |
DE69328444T DE69328444T3 (en) | 1992-07-02 | 1993-06-23 | switch |
DE69315384T DE69315384T2 (en) | 1992-07-02 | 1993-06-23 | counter |
EP95113702A EP0698899B2 (en) | 1992-07-02 | 1993-06-23 | Switch |
CN 93107622 CN1028264C (en) | 1992-07-02 | 1993-06-25 | Switch |
KR93012316A KR0128485B1 (en) | 1992-07-02 | 1993-07-01 | Switch |
US08/434,529 US5596184A (en) | 1992-07-02 | 1995-05-04 | Switch including a moving element, a repelling element and a conductor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4197444A JP3034697B2 (en) | 1992-07-02 | 1992-07-02 | Switch |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0620547A true JPH0620547A (en) | 1994-01-28 |
JP3034697B2 JP3034697B2 (en) | 2000-04-17 |
Family
ID=16374612
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4197444A Expired - Fee Related JP3034697B2 (en) | 1992-07-02 | 1992-07-02 | Switch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3034697B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010287377A (en) * | 2009-06-10 | 2010-12-24 | Fuji Electric Fa Components & Systems Co Ltd | Circuit breaker |
JP2013012504A (en) * | 2012-10-16 | 2013-01-17 | Mitsubishi Electric Corp | Circuit breaker |
-
1992
- 1992-07-02 JP JP4197444A patent/JP3034697B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010287377A (en) * | 2009-06-10 | 2010-12-24 | Fuji Electric Fa Components & Systems Co Ltd | Circuit breaker |
JP2013012504A (en) * | 2012-10-16 | 2013-01-17 | Mitsubishi Electric Corp | Circuit breaker |
Also Published As
Publication number | Publication date |
---|---|
JP3034697B2 (en) | 2000-04-17 |
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