JPH0620550A - Switch - Google Patents
SwitchInfo
- Publication number
- JPH0620550A JPH0620550A JP19744692A JP19744692A JPH0620550A JP H0620550 A JPH0620550 A JP H0620550A JP 19744692 A JP19744692 A JP 19744692A JP 19744692 A JP19744692 A JP 19744692A JP H0620550 A JPH0620550 A JP H0620550A
- Authority
- JP
- Japan
- Prior art keywords
- contact
- arc
- conductor portion
- fixed
- current
- 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１１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１２は図１１の回
路遮断器の接点開離直後の状態を示す側面図、図１３は
図１２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。図において、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１
４を（図１２，図１３参照）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. 11 is a side view showing a state in which a circuit breaker as a conventional switch is open, for example, FIG. 12 is a side view showing a state immediately after contact opening of the circuit breaker of FIG. 11, 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, 1 is a movable contactor of a circuit breaker, and this movable contactor 1 is a rotation fulcrum 1 of a base portion.
4 is supported so as to rotate around (see FIGS. 12 and 13). 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, 11
Is a conductor that connects 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。従来の固定接触子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４
ｂ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４
ｄ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. The conventional fixed contactor 4 is formed by bending a conductor portion 4a connected to the terminal portion 5 on the power source side and extending in the horizontal direction and an end portion of the conductor portion 4a opposite to the terminal portion 5 downward. Vertical conductor part 4b and this conductor part 4b
A stepped lower conductor portion 4c extending horizontally from the lower end of the conductor portion 4a opposite to the conductor portion 4a, a conductor portion 4d rising vertically from the tip of the conductor portion 4c, and the conductor portion 4
The fixed contact 3 is integrally formed in a shape including a conductor portion 4e extending horizontally from the upper end of d toward the conductor portion 4a, 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１１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. 11, 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 contactor 1 rotates downward about the rotation fulcrum 14 of the base portion, so that the movable contact 2 becomes the fixed contact 3. The contact is closed and power is supplied from the power supply 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１
２および図１３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. When such contacts are opened,
2 and FIG. 13, 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
１１〜図１３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１
１〜図１３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（導体部）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. The current path by this fixed contact 4 is shown in FIG.
1 to 13, 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 (conductor portion) 4e on the fixed contact 3 side of the fixed contactor 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、接点
２，３開離直後に可動接触子１を開極させる方向に働
き、かつアークＡを電源側の端子部５方向に引き延ばす
電磁力を同時に発生する固定接触子４の電流経路は、固
定接点３側の導体部４ｅだけである。他の電流経路（導
体部）４ａ，４ｂ，４ｃ，４ｄは、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している。ま
た、可動接触子１の回動支点１４側の一部に働く電流経
路４ｄによる電磁力は可動接触子１をを開極させる方向
だが、可動接触子１の可動接点２側の一部に働く電流経
路４ｄによる電磁力は前記開極を妨げる方向であり、全
体として電流経路４ｄによる可動接触子１の開極を妨げ
るように働く。さらに、電流経路４ｄの電流は、前記ア
ークＡの電流と同方向でアークと引き合うため、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。
電流経路４ａと４ｃの電流は可動接触子１の電流と同方
向のために可動接触子１と引き合い、可動接触子１に開
極方向と反対方向の電磁力を及ぼす。また、電流経路４
ａと４ｃの電流は電流経路４ｅと逆方向に流れているの
で、アークを端子部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る。電流経路４ｂの電流は、可
動接触子１の電流と垂直かつ可動接触子より端子部５側
に位置するので、可動接触子１に開極と反対方向の電磁
力を及ぼす。また、電流経路４ｂの電流は、アークの電
流と逆方向のため反発し合い、アークを端子部５の方向
と逆方向に引き延ばすことになる。このような理由によ
り、電流経路４ｅが発生する可動接触子１を開極させ且
つアークを端子部５方向に引き延ばす電磁力が減少して
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てい
ないという問題点があった。Since the switch having the conventional fixed contact shape is constructed as described above, it works in the direction of opening the movable contact 1 immediately after the contacts 2 and 3 are separated, In addition, the current path of the fixed contactor 4 that simultaneously generates the electromagnetic force that extends the arc A toward the terminal portion 5 on the power supply side is only the conductor portion 4e on the fixed contact 3 side. The other current paths (conductor portions) 4a, 4b, 4c, 4d generate an electromagnetic force that extends the arc A to the side opposite to the terminal portion 5. Further, the electromagnetic force due to the current path 4d that acts on a part of the movable contact 1 on the side of the rotation fulcrum 14 is in the direction of opening the movable contact 1, but acts on a part of the movable contact 1 on the side of the movable contact 2. The electromagnetic force due to the current path 4d is in a direction that hinders the opening, and acts as a whole to prevent the opening of the movable contactor 1 by the current path 4d. Further, the current in the current path 4d attracts the arc in the same direction as the current of the arc A, so that the arc A is elongated in the direction opposite to the direction of the terminal portion 5.
The currents in the current paths 4a and 4c attract the movable contact 1 because they are in the same direction as the current of the movable contact 1, and exert an electromagnetic force on the movable contact 1 in the direction opposite to the opening direction. In addition, the current path 4
The currents a and 4c flow in the opposite direction to the current path 4e, resulting in the generation of an electromagnetic force that extends the arc in the direction opposite to the direction of the terminal portion 5. The current in the current path 4b is perpendicular to the current in the movable contactor 1 and is located closer to the terminal 5 than the movable contactor, and therefore exerts an electromagnetic force on the movable contactor 1 in the direction opposite to the opening. Further, the current in the current path 4b repels each other because it is in the opposite direction to the current of the arc, so that the arc is extended in the direction opposite to the direction of the terminal portion 5. For this reason, the electromagnetic force that causes the current path 4e to open the movable contact 1 and extends the arc toward the terminal portion 5 decreases. 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 the arc 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、接点開離直後のアーク
が導体の電流成分より端子部側に引き延ばされ、消弧板
に触れて冷却されるようにして限流性能の向上を図った
開閉器を得ることを目的とする。The invention of claim 1 has been made to solve the above-mentioned problems. The arc immediately after the contact is opened is extended to the terminal side from the current component of the conductor, and the arc extinguishing plate is provided. The purpose is to obtain a switch with improved current limiting performance by being touched and cooled.
【００１３】請求項２の発明は、小電流時の遮断時にお
いてもアークの駆動磁場を増強でき、広範囲の電流領域
において遮断性能の向上を図り、また、小電流時でも高
いアーク電圧を発生、維持できる限流性能の優れた開閉
器を得ることを目的とする。According to the second aspect of the present invention, the driving magnetic field of the arc can be enhanced even when breaking at a small current, the breaking performance can be improved in a wide current region, and a high arc voltage can be generated even at a small current. The purpose is to obtain a switch with excellent current limiting performance that can be maintained.
【００１４】[0014]
【課題を解決するための手段】請求項１の発明に係る開
閉器は、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、可動接点と接触する前記固定接点
の接触面の位置を前記端子部の位置より下方に配置し、
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、前記接点閉性状態時に前
記接点接触面の位置より上方に配置すると共に、前記接
点開成状態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、前記第１導体部の下方
に消弧板を配置したものである。A switch according to the invention of claim 1 is 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 an opening / closing operation of the movable contact. In a switch equipped with a fixed contact having at one end thereof and a terminal connected to the other end of the fixed contact, a direction in which the movable contact in the contact closed state is separated from the fixed contact is upward. In this case, a first conductor portion that connects the fixed contact to the terminal portion, a second conductor portion that has the fixed contact, and a third conductor that vertically connects the first conductor portion and the second conductor portion. And the position of the contact surface of the fixed contact that comes into contact with the movable contact is arranged below the position of the terminal portion.
The third conductor portion is arranged from the position of the fixed contact to the other end side where the movable contact of the movable contactor is not provided and to the opposite side of the terminal portion, and the first conductor portion is the above-mentioned in the contact closing state. The first contact is disposed above the contact contact surface and can be seen from the movable contact surface when the contact is open.
The conductor portion is covered with an insulator, and an arc extinguishing plate is arranged below the first conductor portion.
【００１５】請求項２の発明に係る開閉器は、前記第１
導体部下方の消弧板を、磁性体または非磁性体で形成し
たものである。A switch according to a second aspect of the present invention is the switch according to the first aspect.
The arc extinguishing plate below the conductor is formed of a magnetic material or a non-magnetic material.
【００１６】[0016]
【作用】請求項１の発明における開閉器は、接点開離直
後のアークが固定接触子を構成する導体を流れる全ての
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、維持することができる。ま
た、固定接触子のつくる強い磁場によってアークは接点
開離直後から端子部の方向に引き延ばされるので、第１
導体部下方の消弧板に瞬時に触れて冷却され、限流性能
の向上が図れる。In the switch according to the invention of claim 1, the arc immediately after the contact is opened is extended toward the terminal portion by all the currents flowing through the conductors forming the fixed contact, and thereafter the arc is the first conductor portion. A high arc voltage can be generated and maintained by being pressed against the insulator covering the. In addition, since the arc is extended toward the terminal immediately after the contact is opened by the strong magnetic field generated by the fixed contact,
The arc-extinguishing plate below the conductor is instantly touched and cooled, and the current limiting performance can be improved.
【００１７】請求項２の発明における開閉器は、第１導
体部下方の消弧板が磁性体からなる場合は、小電流時の
遮断時においてもアークの駆動磁場を増強でき、広範囲
の電流領域において遮断性能を向上させ得る。また、前
記消弧板が非磁性体からなる場合は、固定接触子によっ
て増強された固定接点周囲のアーク駆動磁場を乱すこと
なくアークを伸長、冷却するので、小電流でも高いアー
ク電圧を発生、維持できて優れた限流性能が得られる。In the switch according to the second aspect of the present invention, when the arc extinguishing plate below the first conductor portion is made of a magnetic material, the driving magnetic field of the arc can be strengthened even when the current is cut off at a small current, and a wide current range is achieved. The blocking performance can be improved in. When the arc-extinguishing plate is made of a non-magnetic material, the arc is extended and cooled without disturbing the arc driving magnetic field around the fixed contact, which is enhanced by the fixed contact, so that a high arc voltage is generated even with a small current, It can be maintained and excellent current limiting performance can be obtained.
【００１８】[0018]
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
して容器を断面で表わし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１１〜図１３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. 1 is a side view of an arc extinguishing section showing a closed state of a circuit breaker in which a container is shown in cross section as a switch according to an embodiment of the invention of claim 1. FIG. 2 is an opened state of the circuit breaker of FIG. FIG. 14 is a side view showing the same as FIG. 11 to FIG. In the figure, 4 is a fixed contactor having a fixed contact 3 provided at one end thereof, and the fixed contactor 4 is composed of a first conductor portion 4a, a second conductor portion 4e, and a third conductor portion 4d. There is.
【００１９】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.
【００２０】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 a 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.
【００２１】ここで、固定接触子４に接続された端子部
５は、固定接点３の接触面より上方に位置している。ま
た、固定接触子４の固定接点３が固着された第２導体部
４ｅと端子部５の接続は、第１導体部４ａと第３導体部
４ｄとで行われている。第１導体部４ａは全て固定接点
３の接触面より上方に位置しており、第３導体部４ｄと
第１導体部４ａを固定接点３の位置より回動支点１４側
で接続している。The terminal portion 5 connected to the fixed contact 4 is located above the contact surface of the fixed contact 3. Further, the connection between the second conductor portion 4e to which the fixed contact 3 of the fixed contactor 4 is fixed and the terminal portion 5 is made by the first conductor portion 4a and the third conductor portion 4d. All the first conductor portions 4a are located above the contact surface of the fixed contact 3, and the third conductor portion 4d and the first conductor portion 4a are connected from the position of the fixed contact 3 on the rotation fulcrum 14 side.
【００２２】１６は消弧板で、この消弧板１６は第１導
体部４ａの下方に配置されている。この消弧板１６は、
可動接触子１の回動および可動接点２と固定接点３の接
離を妨げないようにするための切欠部１６ａ（図９参
照）を有している。図９から明らかなように、前記消弧
板１６の切欠部１６ａは種々の形状に形成し得る。Reference numeral 16 is an arc extinguishing plate, and this arc extinguishing plate 16 is arranged below the first conductor portion 4a. This arc extinguishing plate 16 is
It has a notch 16a (see FIG. 9) for not hindering the rotation of the movable contact 1 and the contact and separation of the movable contact 2 and the fixed contact 3. As is apparent from FIG. 9, the cutout portion 16a of the arc extinguishing plate 16 can be formed in various shapes.
【００２３】もう一方の消弧板６にあっても、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１１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１
０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。Even the other arc-extinguishing plate 6 is provided with a notch (not shown) for not hindering the rotation of the movable contact 1. 1 and 2, the mechanism section 8 and the handle 9 and the load side terminal section 1 in the conventional circuit breaker shown in FIG.
0 is omitted, and naturally, these are housed and arranged in the container 12.
【００２４】図３（ａ），（ｂ）はこの発明の実施例に
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４ｅ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。3 (a) and 3 (b) are perspective views showing a fixed contact according to an embodiment of the present invention. The fixed contactor 4 shown in FIG. 3 (a) is integrally formed in a substantially U-shape by the first conductor portion 4a, the second conductor portion 4e, and the third conductor portion 4d, and is one end of the U-shape. The power source side terminal portion 5 is connected to the power source connection side end of the first conductor portion 4a. Further, the fixed contact 3 is fixed to the inside of the U-shape that is the end portion on the opposite side, that is, to the upper surface portion of the second conductor portion 4e.
Further, in the fixed contactor 4, a connection conductor portion (first conductor portion 4a) located above the fixing surface of the fixed contact 3 is provided.
The third conductor portion 4d) is provided with a slit 40 so as not to interfere with the opening / closing operation of the movable contact 1 with respect to the fixed contact 3 on the second conductor portion 4e.
【００２５】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 connecting portion of the terminal portion 5 of the first conductor portion 4a. To the third conductor portion 4d.
【００２６】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が開離した直後の状
態を示している。ここで、矢印は電流を示し、消弧板
６，１６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 immediately after the contacts 2 and 3 are opened. Here, the arrow indicates the current, and the arc extinguishing plates 6 and 16 are omitted for simplicity.
【００２７】端子部５から固定接触子４の第１導体部４
ａまでで構成される電流経路は、全てアークＡの上方に
ある。この結果、こ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
である。第３導体部４ｄを流れる電流は可動接触子１を
流れる電流に対して垂直方向であり、固定接触子４の第
３導体部４ｄに流れる電流はアーク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は、強力に引き延ばされ、アーク抵
抗が急激に高くなる。From the terminal portion 5 to the first conductor portion 4 of the fixed contactor 4.
The current paths formed up to a are all above the arc A. As a result, the electromagnetic force acting on the arc A generated by this current path is a force that extends the arc A to the terminal portion 5 side. The current flowing through the third conductor portion 4d is perpendicular to the current flowing through the movable contactor 1, and the current flowing through the third conductor portion 4d of the fixed contactor 4 is in the opposite direction to the arc current. The electromagnetic force due to the current flowing through the conductor portion 4d also serves as a force for extending 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 toward the terminal portion 5 side. As a result, the arc immediately after the contact is opened is strongly stretched, and the arc resistance rapidly increases.
【００２８】図６（ａ）は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６（ｂ）は図６（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６（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６（ｂ）のＺ軸上での磁場強度分布図であ
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（以下、アーク駆動磁場と呼ぶ）である。図６
（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. 6 (a) 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, and FIG. 6 (b) is shown in FIG. 6 (a). A-
It is an A line sectional view. 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. 6 (c) is a magnetic field strength distribution diagram on the Z axis of FIG. 6 (b) created by the current flowing through the fixed contactor 4 obtained by theoretical calculation, and the forward magnetic field causes the arc to move toward the terminal portion 5 side. It is a magnetic field component to be extended (hereinafter referred to as an arc drive magnetic field). Figure 6
As shown in (c), the first conductor portion 4a is located at a position displaced left and right from the plane on which the movable contact 1 rotates.
【００２９】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７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. 7, even when 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.
【００３０】実施例２．図１において、前記消弧板１６
を磁性体で構成することにより、定格電流や、過電流な
どの領域、すなわち、固定接触子４に流れる電流値が小
さく、その電流のつくる磁場も小さい領域の遮断におい
て、接点開離直後のアークに対する駆動磁場を増強する
ことができ、引き延ばされたアークは直ちに冷却される
ので、広範囲にわたる電流に対して優れた遮断性能が得
られる。Example 2. In FIG. 1, the arc extinguishing plate 16
By using a magnetic material, the arc immediately after the contact breaks when shutting off in areas such as rated current and overcurrent, that is, in areas where the current value flowing through the fixed contact 4 is small and the magnetic field produced by the current is also small. The driving magnetic field for the can be enhanced and the extended arc is cooled immediately, resulting in excellent interruption performance over a wide range of currents.
【００３１】実施例３．図１において、前記消弧板１６
を非磁性体で構成することにより、第１導体部４ａの下
方におけるアークの駆動磁場を乱すことなく、アークの
駆動、冷却ができる。特に、消弧板１６を非磁性体の金
属で構成した場合、アークの冷却は一層効果的で、高い
アーク電圧を得ることができる。Example 3. In FIG. 1, the arc extinguishing plate 16
By using a non-magnetic material, it is possible to drive and cool the arc without disturbing the driving magnetic field of the arc below the first conductor portion 4a. In particular, when the arc extinguishing plate 16 is made of a non-magnetic metal, the cooling of the arc is more effective and a high arc voltage can be obtained.
【００３２】実施例４．図１において、絶縁物よりなる
消弧板１６を図７のように一枚以上配置することによ
り、接点開離直後の引き延ばされたアークＡは強制的に
波形に押し込められ、さらにはアークを伸長でき、高い
アーク電圧が得られる。Example 4. In FIG. 1, by disposing one or more arc extinguishing plates 16 made of an insulating material as shown in FIG. 7, the extended arc A immediately after contact opening is forcibly pushed into the waveform, and further, the arc. Can be extended and a high arc voltage can be obtained.
【００３３】なお、上記実施例において、消弧板１６
は、例えば図１０のような棒状のものを使用してもよ
い。この場合も、可動接触子１の回動および接点２，３
の接離を妨げないように配置することは上記の場合と同
様である。その効果は上記実施例と同様である。In the above embodiment, the arc extinguishing plate 16
For example, a rod-shaped one as shown in FIG. 10 may be used. Also in this case, the rotation of the movable contact 1 and the contacts 2, 3
It is the same as the above case that it is arranged so as not to interfere with the contact and separation of. The effect is similar to that of the above embodiment.
【００３４】また、上記実施例で示した固定接触子４の
固定接点３を固着した第２導体部４ｅのかわりに、図８
に示すような第２導体部４ｅを回動接点の方向に伸ばし
て、第２導体部４ｅの部分に流れる電流が閉成時の可動
接触子１に流れる電流とほぼ平行で逆方向になるように
してもよい。このようにすると、電流経路４ｅによるア
ークを端子部５側に引き延ばす力が増大し、また、閉成
時の可動接触子１と固定接触子４の第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が急激に大きくなる
ため、アーク抵抗の立ち上がりが速く、より限流性能が
向上する。Further, instead of the second conductor portion 4e to which the fixed contact 3 of the fixed contactor 4 shown in the above-mentioned embodiment is fixed, FIG.
The second conductor portion 4e shown in Fig. 2 is extended in the direction of the rotating contact so that the current flowing in the portion of the second conductor portion 4e is substantially parallel to the current flowing in the movable contact 1 at the time of closing and in the opposite direction. You may By doing so, the force for extending the arc due to the current path 4e to the terminal portion 5 side increases, and the electromagnetic repulsive force between the movable contactor 1 and the second conductor portion 4e of the fixed contactor 4 at the time of closing is increased. Is applied, the rotating speed of the movable contactor 1 is increased, and the arc immediately after the contact is opened is rapidly increased, so that the arc resistance rises quickly and the current limiting performance is further improved.
【００３５】また、上記実施例では、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
例と同様の効果を奏する。In the above embodiment, the case of the circuit breaker has been described, but other switches may be used, and the same effect as that of the above embodiment can be obtained.
【００３６】[0036]
【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するため、可
動接触子の開離直後のアークを大きく引き延ばすことが
できる上に、固定接触子の第１導体部の下方に配置した
消弧板に触れさせ冷却するので、急激のアーク電圧を立
ち上げることができる。さらには、可動接触子の開離距
離が増大しても絶縁物によるアーク冷却作用によって、
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という効
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, so that the movable contact is moved. Since the arc immediately after the child is separated can be greatly extended and the arc-extinguishing plate arranged below the first conductor portion of the fixed contact is brought into contact with the arc-cooling plate to cool it, a rapid arc voltage can be raised. Furthermore, even if the separation distance of the movable contact increases, the arc cooling effect of the insulator causes
Since it is configured to generate and maintain a high arc voltage, there is an effect that a switch with excellent current limiting performance can be obtained.
【００３７】また、請求項２の発明によれば、固定接触
子の第１導体部の下方に配置する消弧板を磁性体または
非磁性体で構成するようにしたので、磁性体の消弧板の
場合、定格電流や過負荷電流などの小電流時、すなわ
ち、電流が上記固定接触子を流れる時につくるアーク駆
動磁場の小さいときでも、その駆動磁場を増強でき、広
範囲の電流領域に対して優れた限流を持つ開閉器が得ら
れるという効果がある。Further, according to the invention of claim 2, since the arc extinguishing plate disposed below the first conductor portion of the fixed contact is made of a magnetic material or a non-magnetic material, the arc extinguishing of the magnetic material is performed. In the case of a plate, at the time of a small current such as a rated current or an overload current, that is, even when the arc drive magnetic field created when the current flows through the fixed contact is small, the drive magnetic field can be strengthened and a wide current range can be obtained. This has the effect of providing a switch with excellent current limiting.
【００３８】また、非磁性対の消弧板の場合は、アーク
駆動磁場を乱すことなく接点開離直後のアークを冷却、
伸長できるので、高いアーク電圧を発生させ、優れた限
流性能を持った開閉器が得られるという効果がある。In the case of a non-magnetic pair of arc-extinguishing plates, the arc immediately after contact opening is cooled without disturbing the arc driving magnetic field,
Since it can be extended, there is an effect that a high arc voltage is generated and a switch having excellent current limiting performance can be obtained.
【図１】この発明の一実施例による回路遮断器の可動接
触子が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 movable contactor of a circuit breaker according to an embodiment of the present invention.
【図２】図１の回路遮断器の可動接触子が開成状態を示
す消弧部の側面図である。FIG. 2 is a side view of an arc extinguishing section showing a movable contact of the circuit breaker of FIG. 1 in an open state.
【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開離直後の状態を示す
動作説明図である。4 is an operation explanatory view showing a state immediately after contact opening of the circuit breaker of FIG. 1. FIG.
【図５】図１の回路遮断器の可動接触子が最大開離した
状態を示す動作説明図である。5 is an operation explanatory view showing a state where the movable contactor of the circuit breaker of FIG. 1 is maximally separated.
【図６】図６（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を説明するための図である。図６
（ｂ）は図６（ａ）のＡ−Ａ線断面図である。図６
（ｃ）は図６（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。6A is a diagram for explaining a magnetic field strength distribution generated by a current flowing through the fixed contact of FIG. Figure 6
6B is a cross-sectional view taken along the line AA of FIG. Figure 6
FIG. 6C is a graph showing a magnetic field strength distribution created by a current flowing through the fixed contact on the Z axis of FIG. 6B.
【図７】この発明の一実施例にる回路遮断器の動作説明
図である。FIG. 7 is an operation explanatory view of the circuit breaker according to the embodiment of the present invention.
【図８】この発明の他の実施例による回路遮断器の動作
説明図である。FIG. 8 is an operation explanatory diagram of a circuit breaker according to another embodiment of the present invention.
【図９】図９（ａ）〜図９（ｈ）はこの発明の実施例に
よる消弧板の変形例を示す斜視図である。9 (a) to 9 (h) are perspective views showing modifications of the arc extinguishing plate according to the embodiment of the present invention.
【図１０】この発明の他の実施例による消弧板の斜視図
である。FIG. 10 is a perspective view of an arc extinguishing plate according to another embodiment of the present invention.
【図１１】従来の回路遮断器の開成状態を示す側面図で
ある。FIG. 11 is a side view showing an open state of a conventional circuit breaker.
【図１２】図１１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。12 is a side view showing a state of the circuit breaker of FIG. 11 immediately after contact opening.
【図１３】図１２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。13 is a side view showing the maximum open state of the movable contact in the circuit breaker of 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 １６ 消弧板 DESCRIPTION OF SYMBOLS 1 movable contactor 2 movable contact 3 fixed contact 4 fixed contactor 4a 1st conductor part 4d 3rd conductor part 4e 2nd conductor part 5 terminal part 15 insulator 16 arc extinguishing plate
───────────────────────────────────────────────────── フロントページの続き (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 (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 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Shinji Yamamoto, No. 8 Midoricho, Fukuyama City, Fukuyama Plant, Mitsubishi Electric Co., Ltd. (72) No. 1-8 Kenichi Nishina, Midoricho, Fukuyama City, Mitsubishi Electric Corporation Fukuyama Plant, Ltd. Within
Claims (2)
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、可動接点と接触する前記固
定接点の接触面の位置を前記端子部の位置より下方に配
置し、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、前記接点閉性状態
時に前記接点接触面の位置より上方に配置すると共に、
前記接点開成状態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、前記第１導体部
の下方に消弧板を配置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. Contact of the fixed contact, which comprises 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 contacts the movable contact. The position of the surface is disposed below the position of the terminal portion, and the third conductor portion is located on the other end side where the movable contact of the movable contact is not provided and on the opposite side of the terminal portion from the position of the fixed contact. And disposing the first conductor portion of the contact contact surface when the contact is closed. Placed above the position,
A switch, wherein a portion of the first conductor portion that can be seen from the surface of the movable contact in the contact opened state is covered with an insulator, and an arc extinguishing plate is arranged below the first conductor portion.
りなって前記第１導体部の下方に配置されていることを
特徴とする請求項１記載の開閉器。2. The switch according to claim 1, wherein the arc-extinguishing plate is made of a magnetic material or a non-magnetic material and is disposed below the first conductor portion.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4197446A JP2996808B2 (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 |
| DE69328444T DE69328444T3 (en) | 1992-07-02 | 1993-06-23 | switch |
| EP95113702A EP0698899B2 (en) | 1992-07-02 | 1993-06-23 | Switch |
| EP93110049A EP0576992B1 (en) | 1992-07-02 | 1993-06-23 | Switch |
| DE69315384T DE69315384T2 (en) | 1992-07-02 | 1993-06-23 | counter |
| 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 |
|---|---|---|---|
| JP4197446A JP2996808B2 (en) | 1992-07-02 | 1992-07-02 | Switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0620550A true JPH0620550A (en) | 1994-01-28 |
| JP2996808B2 JP2996808B2 (en) | 2000-01-11 |
Family
ID=16374646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4197446A Expired - Fee Related JP2996808B2 (en) | 1992-07-02 | 1992-07-02 | Switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2996808B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030016063A (en) * | 2001-08-20 | 2003-02-26 | 엘지산전 주식회사 | structure for preventing grounding and dust in Molded Case Circuit Breaker |
| JP2007149486A (en) * | 2005-11-28 | 2007-06-14 | Hitachi Industrial Equipment Systems Co Ltd | Circuit breaker |
| JP2012174686A (en) * | 2011-02-22 | 2012-09-10 | Ls Industrial Systems Co Ltd | Circuit breaker with arc-extinguishing part |
| WO2014045963A1 (en) * | 2012-09-21 | 2014-03-27 | 富士通コンポーネント株式会社 | Electromagnetic relay |
-
1992
- 1992-07-02 JP JP4197446A patent/JP2996808B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030016063A (en) * | 2001-08-20 | 2003-02-26 | 엘지산전 주식회사 | structure for preventing grounding and dust in Molded Case Circuit Breaker |
| JP2007149486A (en) * | 2005-11-28 | 2007-06-14 | Hitachi Industrial Equipment Systems Co Ltd | Circuit breaker |
| JP4542025B2 (en) * | 2005-11-28 | 2010-09-08 | 株式会社日立産機システム | Circuit breaker |
| JP2012174686A (en) * | 2011-02-22 | 2012-09-10 | Ls Industrial Systems Co Ltd | Circuit breaker with arc-extinguishing part |
| US8772665B2 (en) | 2011-02-22 | 2014-07-08 | Lsis Co., Ltd. | Circuit breaker with arc extinguishing mechanism |
| WO2014045963A1 (en) * | 2012-09-21 | 2014-03-27 | 富士通コンポーネント株式会社 | Electromagnetic relay |
| US9330872B2 (en) | 2012-09-21 | 2016-05-03 | Fujitsu Component Limited | Electromagnetic relay |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2996808B2 (en) | 2000-01-11 |
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