JP2012212543A - Miniature switch for dc cutoff with arc-extinguishing device - Google Patents

Miniature switch for dc cutoff with arc-extinguishing device Download PDF

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JP2012212543A
JP2012212543A JP2011077151A JP2011077151A JP2012212543A JP 2012212543 A JP2012212543 A JP 2012212543A JP 2011077151 A JP2011077151 A JP 2011077151A JP 2011077151 A JP2011077151 A JP 2011077151A JP 2012212543 A JP2012212543 A JP 2012212543A
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movable contact
arc
interrupting
extinguishing device
switch
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JP5758169B2 (en
Inventor
Shoji Haneda
正二 羽田
Hidehiro Takakusa
英博 高草
Minoru Okada
實 岡田
Haruki Wada
晴樹 和田
Fumio Mura
文夫 村
Katsuhiro Tanaka
勝広 田中
Takatoshi Eda
貴俊 江田
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Nihon Kaiheiki Industry Co Ltd
NTT Data Intellilink Corp
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Nihon Kaiheiki Industry Co Ltd
NTT Data Intellilink Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a miniature switch for DC cutoff with arc-extinguishing device, capable of implementing complete arc-extinguishing by eliminating unstable factors of a system of implementing arc-extinguishing by extending an arc with magnetic fields or the like.SOLUTION: In the miniature switch for DC cutoff with arc-extinguishing device, a shielding plate 11 made of material having insulation properties and heat resistance is inserted between a stationary contact 4 and a movable contact 8 of a movable armature 6 and, by controlling a direction of mechanically pulling arcs, arcs generated during DC cutoff are completely extinguished and shut down.

Description

本発明は、消弧装置付き直流電流遮断用小形スイッチに係り、特に、直流電流の遮断時に発生するアークの消弧性能が優れた直流電流遮断用小形スイッチに関するものである。   The present invention relates to a small switch for interrupting a direct current with an arc extinguishing device, and more particularly to a small switch for interrupting a direct current that is excellent in extinguishing performance of an arc generated when the direct current is interrupted.

図１４は従来の消弧装置付き直流電流遮断用小形スイッチの直流電流の遮断部を示す斜視図、図１５はその直流電流の遮断部の平面図、図１６はその直流電流の遮断部の側面図である。
従来、消弧装置付き直流電流遮断用小形スイッチにおいては、図１４に示すように、固定接点１０１と可動接点１０２からなる直流電流回路において、直流電流の遮断部１０３の近傍に永久磁石１０４を配置しておき、図１５及び図１６に示すように、直流電流の遮断時に発生するアーク１０５を永久磁石１０４の磁気により引き伸ばし消弧するようにしている（下記特許文献１参照）。 FIG. 14 is a perspective view showing a DC current interrupting portion of a conventional DC current interrupting small switch with an arc extinguishing device, FIG. 15 is a plan view of the DC current interrupting portion, and FIG. 16 is a side view of the DC current interrupting portion. FIG.
Conventionally, in a small switch for interrupting DC current with an arc extinguishing device, as shown in FIG. 14, a permanent magnet 104 is arranged in the vicinity of a DC current interrupting portion 103 in a DC current circuit comprising a fixed contact 101 and a movable contact 102. As shown in FIGS. 15 and 16, the arc 105 generated when the DC current is interrupted is stretched and extinguished by the magnetism of the permanent magnet 104 (see Patent Document 1 below).

特開平９−３２０３７５号公報JP 9-320375 A

しかしながら、上記した消弧装置付き直流電流遮断用小形スイッチでは、開閉機構とは別個に永久磁石を用いた消弧装置を配置して発生したアークを引き伸ばして消孤しており、接点間に流れる電流値によってアークが変化し、その変化するアークを引き伸ばす方向を磁界によってコントロールしなければならないといった磁界等によりアークを引き伸ばして消孤する方式の不安定要因を排除するためには、複雑な設計が必要であり、場合によっては大型化する必要があった。   However, in the above-described small switch for interrupting DC current with an arc extinguishing device, an arc extinguishing device using a permanent magnet is arranged separately from the opening and closing mechanism, and the generated arc is extinguished and flows between the contacts. In order to eliminate the unstable factors of the method of extending and extinguishing the arc by a magnetic field, etc., in which the arc changes depending on the current value and the direction in which the changing arc is extended must be controlled by a magnetic field, a complicated design is required. Necessary, and in some cases, increased size.

本発明は、上記状況に鑑みて、小型化を図るとともに、磁界等によりアークを引き伸ばして消孤する方式の不安定要因を排除して確実にアークを消孤することができる、消弧装置付き直流電流遮断用小形スイッチを提供することを目的とする。   In view of the above situation, the present invention is equipped with an arc extinguishing device that can be reduced in size and can eliminate the instability factor of the method of extending and extinguishing the arc by a magnetic field or the like to reliably extinguish the arc. An object of the present invention is to provide a small switch for interrupting a direct current.

本発明は、上記目的を達成するために、
〔１〕消弧装置付き直流電流遮断用小形スイッチにおいて、固定接点と可動接片の可動接点との間に絶縁性と耐熱性の高い材質からなる遮断板を挿入し、機械的にアークを引く方向を制御することにより、直流電流を遮断する際に発生するアークを確実に消弧して遮断することを特徴とする。 In order to achieve the above object, the present invention provides
[1] In a small switch for DC current interruption with an arc extinguishing device, a breaker plate made of a material having high insulation and heat resistance is inserted between the fixed contact and the movable contact of the movable contact piece to mechanically draw an arc. By controlling the direction, the arc generated when interrupting the direct current is surely extinguished and interrupted.

〔２〕上記〔１〕記載の消弧装置付き直流電流遮断用小形スイッチにおいて、前記遮断板を駆動する速度を、スイッチの操作部の速度に因らず一定であり、かつ高速とするスプリング反転駆動機構を具備することを特徴とする。
〔３〕上記〔２〕記載の消弧装置付き直流電流遮断用小形スイッチにおいて、前記遮断板は、先端部がテーパ形状の底部と、この底部の両側に形成される先端が傾斜状の立ち上がり部とを具備し、この立ち上がり部により前記可動接片の先端部両側に形成される耳状の突部を押し上げて前記固定接点から前記可動接点を開き、その開かれた箇所に前記遮断板の先端部をさらに挿入するようにしたことを特徴とする。 [2] In the small switch for interrupting a direct current with an arc extinguishing device according to the above [1], the speed of driving the blocking plate is constant regardless of the speed of the operation part of the switch, and the spring reversal is set to a high speed. A drive mechanism is provided.
[3] In the small switch for interrupting a direct current with an arc extinguishing device according to [2], the interrupting plate has a bottom portion having a tapered tip portion and a rising portion having an inclined tip portion formed on both sides of the bottom portion. And the rising part pushes up the ear-shaped protrusions formed on both sides of the tip of the movable contact piece to open the movable contact from the fixed contact, and the tip of the blocking plate is opened at the open position. It is characterized in that a part is further inserted.

〔４〕上記〔２〕記載の消弧装置付き直流電流遮断用小形スイッチにおいて、前記固定接点と前記可動接点との間に生じるアークが、前記遮断板の先端部側で引き伸ばされ、前記固定接点の周辺から前方へ延びる筐体の底板に形成される狭い長溝の中へ押し込まれるように押し出され、前記狭い長溝の終端段部で前記遮断板にて阻まれて断ち切られるようにしたことを特徴とする。   [4] In the small switch for interrupting direct current with the arc extinguishing device according to [2], an arc generated between the fixed contact and the movable contact is stretched on a front end side of the interrupting plate, and the fixed contact It is pushed out so as to be pushed into a narrow long groove formed in the bottom plate of the casing extending forward from the periphery of the housing, and is cut off by being blocked by the blocking plate at the end step portion of the narrow long groove. And

〔５〕上記〔４〕記載の消弧装置付き直流電流遮断用小形スイッチにおいて、前記遮断板は、前記固定接点と前記可動接点とが完全に開かれた状態のときには前記遮断板の先端部が小形スイッチの筐体側壁の空間部のひさしに挟み込まれるように構成し、前記筐体の底板と前記遮断板との僅かな隙間に引き続けたアークが存在する場合にもアークを前記空間部へ閉じ込め完全に消弧するようにしたことを特徴とする。   [5] In the small switch for DC current interruption with the arc extinguishing device according to [4], the breaker plate is configured such that a tip portion of the breaker plate is in a state where the fixed contact and the movable contact are completely opened. The small switch is configured to be sandwiched between the eaves of the space on the side wall of the casing, and even when there is an arc that continues to be pulled in a slight gap between the bottom plate of the casing and the blocking plate, the arc is also transferred to the space. It is characterized in that the arc is completely extinguished.

〔６〕上記〔２〕記載の消弧装置付き直流電流遮断用小形スイッチにおいて、前記可動接片は、前記可動接点の前方から上部に折り返される厚めの板状体からなる折曲部と、この折曲部に連設される、滑動棒により押し下げられるやはり厚めの板状体からなる滑動部とをさらに具備することを特徴とする。
〔７〕上記〔６〕記載の消弧装置付き直流電流遮断用小形スイッチにおいて、前記出力端子は折曲部と上方へ突出した直立支点とからなるクランク形状であり、前記直立支点は前記可動接片のアーチ頂点に近接して位置するように固定されていることを特徴とする。 [6] In the small switch for interrupting direct current with an arc extinguishing device according to [2], the movable contact piece is a bent portion formed of a thick plate-like body folded back from the front to the top of the movable contact. And a sliding portion formed of a thick plate-like body, which is continuously provided to the bent portion and is pushed down by the sliding rod.
[7] In the small switch for DC current interruption with the arc extinguishing device according to [6], the output terminal has a crank shape including a bent portion and an upright fulcrum protruding upward, and the upright fulcrum is connected to the movable contact. It is fixed so that it may be located in proximity to the arch apex of one piece.

〔８〕上記〔６〕又は〔７〕記載の消弧装置付き直流電流遮断用小形スイッチにおいて、前記固定接点と前記可動接点の接触時（ＯＮ時）には、小形スイッチの転換子が回転し、この転換子の滑動棒が前記アーチ頂点を前方へと通過して前記可動接点側に移動すると、前記可動接片の前記折曲部と前記滑動部が前記アーチ頂点を支点として前記可動接点を押し下げることにより、前記滑動棒を介してバネの力を十分に前記可動接点に加えるようにしたことを特徴とする。   [8] In the small switch for interrupting DC current with the arc extinguishing device according to [6] or [7] above, when the fixed contact and the movable contact are in contact (when ON), the small switch converter rotates. When the sliding rod of this converter passes through the apex of the arch forward and moves to the movable contact side, the bent portion and the sliding portion of the movable contact piece use the movable contact with the arch apex as a fulcrum. By pushing down, the force of the spring is sufficiently applied to the movable contact through the sliding rod.

〔９〕上記〔６〕、〔７〕又は〔８〕記載の消弧装置付き直流電流遮断用小形スイッチにおいて、前記固定接点と前記可動接点の開時（ＯＮ時）には、前記アーチ頂点の後方へと前記滑動棒を移動させることにより前記可動接片に掛かる力を低減し、前記固定接点から前記可動接点が開きやすくなるような機構としたことを特徴とする。
〔１０〕上記〔６〕、〔７〕、〔８〕又は〔９〕記載の消弧装置付き直流電流遮断用小形スイッチにおいて、前記可動接片の片側は出力端子に固定されるようにしたことを特徴とする。 [9] In the small switch for DC current interruption with an arc extinguishing device according to [6], [7] or [8] above, when the fixed contact and the movable contact are open (ON), The mechanism is characterized in that a force applied to the movable contact piece is reduced by moving the sliding rod backward, and the movable contact is easily opened from the fixed contact.
[10] In the small switch for DC current interruption with an arc extinguishing device according to [6], [7], [8] or [9], one side of the movable contact piece is fixed to an output terminal. It is characterized by.

本発明によれば、以下のような効果を奏することができる。
（１）磁界等によりアークを引き伸ばして消孤する方式の不安定要因を排除し、確実にアークを消孤することができる。
（２）消弧装置付き直流電流遮断用小形スイッチの低コスト化、小型化を図ることができる。 According to the present invention, the following effects can be achieved.
(1) The instability factor of the method of extinguishing and extinguishing the arc by a magnetic field or the like can be eliminated, and the arc can be surely extinguished.
(2) It is possible to reduce the cost and size of a small switch for interrupting direct current with an arc extinguishing device.

（３）開閉機構と一体化させた機構的な装置により、的確にアークを消弧することができる。
（４）固定接点と可動接点との閉時（ＯＮ時）には十分な接触圧力が得られ、一方、開時（ＯＦＦ時）には可動接片に掛かる力をより少なくし、固定接点から可動接点が開きやすくなるようにすることができる。 (3) The arc can be accurately extinguished by a mechanical device integrated with the opening / closing mechanism.
(4) Sufficient contact pressure can be obtained when the fixed contact and the movable contact are closed (ON), while less force is applied to the movable contact when the fixed contact is open (OFF). The movable contact can be easily opened.

本発明の消弧装置付き直流電流遮断用小形スイッチの要部断面図である。It is principal part sectional drawing of the small switch for direct current interruption with an arc-extinguishing apparatus of this invention. 本発明の消弧装置付き直流電流遮断用小形スイッチの固定接点回りの構造を示す図である。It is a figure which shows the structure around the stationary contact of the small switch for direct current interruption with an arc-extinguishing apparatus of this invention. 本発明の消弧装置付き直流電流遮断用小形スイッチの可動接片の拡大部分構造を示す斜視図である。It is a perspective view which shows the expansion partial structure of the movable contact piece of the small switch for DC current interruption with an arc-extinguishing apparatus of this invention. 本発明の消弧装置付き直流電流遮断用小形スイッチの遮断板の拡大斜視図である。It is an expansion perspective view of the interruption | blocking board of the small switch for direct current interruption with an arc-extinguishing apparatus of this invention. 本発明の消弧装置付き直流電流遮断用小形スイッチの開閉動作（その１）を示す模式図である。It is a schematic diagram which shows the opening / closing operation | movement of the small switch for direct current interruption with an arc-extinguishing apparatus of this invention (the 1). 本発明の消弧装置付き直流電流遮断用小形スイッチの開閉動作（その２）を示す模式図である。It is a schematic diagram which shows the opening / closing operation | movement (the 2) of the small switch for direct current interruption with an arc-extinguishing apparatus of this invention. 本発明の消弧装置付き直流電流遮断用小形スイッチの開閉動作（その３）を示す模式図である。It is a schematic diagram which shows the opening / closing operation | movement (the 3) of the small switch for direct current interruption with an arc-extinguishing apparatus of this invention. 本発明の消弧装置付き直流電流遮断用小形スイッチの駆動機構と小形スイッチの開閉動作（その１）を示す図である。It is a figure which shows the drive mechanism of the small switch for DC current interruption with an arc-extinguishing apparatus of this invention, and the opening / closing operation | movement of a small switch (the 1). 本発明の消弧装置付き直流電流遮断用小形スイッチの駆動機構と小形スイッチの開閉動作（その２）を示す図である。It is a figure which shows the drive mechanism of the small switch for DC current interruption with an arc-extinguishing apparatus of this invention, and the opening / closing operation | movement of the small switch (the 2). 本発明の消弧装置付き直流電流遮断用小形スイッチの初期の固定接点に対する可動接点の接触状態を示す模式図である。It is a schematic diagram which shows the contact state of the movable contact with respect to the initial fixed contact of the small switch for direct current interruption with an arc-extinguishing apparatus of this invention. 本発明の消弧装置付き直流電流遮断用小形スイッチの固定接点に対する可動接点の挙動を示す模式図である。It is a schematic diagram which shows the behavior of the movable contact with respect to the fixed contact of the small switch for direct current interruption with an arc-extinguishing apparatus of this invention. 本発明の消弧装置付き直流電流遮断用小形スイッチの全体構成を示す断面図である。It is sectional drawing which shows the whole structure of the small switch for DC current interruption with an arc-extinguishing apparatus of this invention. 本発明の消弧装置付き直流電流遮断用小形スイッチの分解斜視図である。It is a disassembled perspective view of the small switch for DC current interruption with an arc-extinguishing device of the present invention. 従来の消弧装置付き直流電流遮断用小形スイッチの直流電流の遮断部を示す斜視図である。It is a perspective view which shows the interruption | blocking part of the direct current of the conventional small switch for direct current interruption with an arc-extinguishing apparatus. 従来の消弧装置付き直流電流遮断用小形スイッチの直流電流の遮断部の平面図である。It is a top view of the interruption part of the direct current of the conventional small switch for direct current interruption with an arc-extinguishing apparatus. 従来の消弧装置付き直流電流遮断用小形スイッチの直流電流の遮断部の側面図である。It is a side view of the interruption part of the direct current of the conventional small switch for direct current interruption with an arc-extinguishing apparatus.

本発明の消弧装置付き直流電流遮断用小形スイッチは、固定接点と可動接片の可動接点との間に絶縁性と耐熱性の高い材質からなる遮断板を挿入し、機械的にアークを引く方向を制御することにより、直流電流を遮断する際に発生するアークを確実に消弧して遮断する。   The small switch for interrupting direct current with an arc extinguishing device of the present invention inserts a breaker plate made of a material having high insulation and heat resistance between a fixed contact and a movable contact of a movable contact piece, and mechanically draws an arc. By controlling the direction, the arc generated when interrupting the direct current is surely extinguished and interrupted.

以下、本発明の実施の形態について詳細に説明する。
図１は本発明の消弧装置付き直流電流遮断用小形スイッチの要部断面図、図２はその固定接点回りの構造を示す図であり、図２（ａ）はその平面図、図２（ｂ）はその断面図である。図３はその可動接片の拡大部分斜視図（可動接点より先に延びる部分は図示していない）、図４はその遮断板の拡大斜視図、図５〜図７はその小形スイッチの開閉動作（その１〜３）を示す模式図（出力端子５の上端方向は図示していない）、図８及び図９はその小形スイッチの駆動機構と小形スイッチの開閉動作（その１〜２）を示す図、図１０はその小形スイッチの初期の固定接点に対する可動接点の接触状態を示す模式図、図１１はその小形スイッチの固定接点に対する可動接点の挙動を示す模式図であり、図１１（ａ）は固定接点に対する可動接点の初期の接触状態を示す模式図、図１１（ｂ）は続いて固定接点に対して摺動する接触状態を示す模式図である。図１２は本発明の消弧装置付き直流電流遮断用小形スイッチの全体構成を示す断面図、図１３はその小形スイッチの分解斜視図である。 Hereinafter, embodiments of the present invention will be described in detail.
FIG. 1 is a cross-sectional view of a main part of a small switch for interrupting DC current with an arc extinguishing device according to the present invention, FIG. 2 is a view showing a structure around a fixed contact, FIG. 2 (a) is a plan view thereof, FIG. b) is a sectional view thereof. 3 is an enlarged partial perspective view of the movable contact piece (the portion extending beyond the movable contact is not shown), FIG. 4 is an enlarged perspective view of the blocking plate, and FIGS. 5 to 7 are opening / closing operations of the small switch. FIG. 8 and FIG. 9 show the driving mechanism of the small switch and the opening / closing operation of the small switch (parts 1 and 2). FIG. 10 is a schematic diagram showing the contact state of the movable contact with respect to the initial fixed contact of the small switch, and FIG. 11 is a schematic diagram showing the behavior of the movable contact with respect to the fixed contact of the small switch. FIG. 11B is a schematic diagram showing an initial contact state of the movable contact with respect to the fixed contact, and FIG. 11B is a schematic diagram showing a contact state in which the movable contact subsequently slides on the fixed contact. FIG. 12 is a sectional view showing the overall configuration of a small switch for interrupting direct current with an arc extinguishing device of the present invention, and FIG. 13 is an exploded perspective view of the small switch.

これらの図において、１は筐体側壁、１Ａは筐体側壁の受け部、１Ｂは筐体側壁の空間部、１Ｃは空間部１Ｂのひさし、２は筐体の底板、２Ａは底板の床面、２Ｂは固定接点４を固定するための穴、２Ｃは後述する凹部（ザグリ部）に連設される狭い長溝、２Ｄは固定接点４の径とほぼ同寸法の径で形成される凹部（ザグリ部）、２Ｅは狭い長溝２Ｃの終端段部であり、３は固定接点４を固定する固定端子であり、固定接点４の下部を固定するための穴２Ｂを介してリベットで固定される。５は出力端子であり、その出力端子５の上部の曲折部５Ａと直立支点５Ｂを有する。６はアーチ状に曲げられた可動接片であり、その可動接片６の一端部６Ａが固定端子５に接続され、そのアーチ状に曲げられた可動接片６の先端部の両側に半円弧状の耳状の突部７が形成され、その先に可動接点８が取り付けられている。１１は丸ピン１３が形成される摺動体１２の両側に配置される遮断板であり、その遮断板１１の底部１１Ａの先端部１１Ｂはテーパー形状を有し、その遮断板１１の底部１１Ａの両側端には立ち上がり部１１Ｃが形成され、その立ち上がり部１１Ｃの幅は、可動接片６の耳状の突部７を受け止めるのに十分な幅を有し、その立ち上がり部１１Ｃの先端部には先端から後端に向かう傾斜部１１Ｄが形成されている。２１は第１の転換子（上部の転換子）であり、レバー２２が挿入されるレバー装着用穴２１Ａと、ピン２４が装着されるピン装着用穴２１Ｂが形成されており、その下部空間には、レバー装着用穴２１Ａの位置の両側にコイルスプリング２５が装着された滑動棒２６が装着されるとともに、レバー装着用穴２１Ａの位置に対応する中央部には、レバー２２の下端部２２Ｂに係合する受部２７とそれに係合するスプリング２８とが装着される。２９は第１の転換子２１の下方に配置される第２の転換子であり、ピン２４を受入れる円弧状の受部２９Ｂが上部に形成されたコの字形状の本体２９Ａと、このコの字形状の本体２９Ａの下部に設けられる遮断板１１を水平方向に駆動する二股の腕２９Ｃとで構成される。なお、ピン２４の両端は筐体側壁１の受部１Ａに係合させるようにしている。したがって、ピン２４の回転による二股の腕２９Ｃの回転運動を、丸ピン１３との係合により遮断板１１の水平方向へ転換する。なお、レバー２２の上部には操作ボタン２３が取り付けられる。だだし、この操作部材としての操作ボタン２３に替えてレバーとするようにしてもよい。   In these drawings, 1 is a housing side wall, 1A is a receiving portion of the housing side wall, 1B is a space portion of the housing side wall, 1C is an eaves of the space portion 1B, 2 is a bottom plate of the housing, and 2A is a floor surface of the bottom plate. 2B is a hole for fixing the fixed contact 4, 2C is a narrow long groove continuously provided in a later-described recess (counterbore), and 2D is a recess (counterbore) formed with a diameter substantially the same as the diameter of the fixed contact 4. 2E is a terminal step portion of the narrow long groove 2C, 3 is a fixed terminal for fixing the fixed contact 4, and is fixed with a rivet through a hole 2B for fixing the lower portion of the fixed contact 4. An output terminal 5 has a bent portion 5A and an upright fulcrum 5B at the top of the output terminal 5. 6 is a movable contact piece bent in an arch shape, one end portion 6A of the movable contact piece 6 is connected to the fixed terminal 5, and semicircular on both sides of the distal end portion of the movable contact piece 6 bent in the arch shape. An arcuate ear-shaped protrusion 7 is formed, and a movable contact 8 is attached to the tip. Reference numeral 11 denotes a blocking plate disposed on both sides of the sliding body 12 on which the round pin 13 is formed. The tip 11B of the bottom 11A of the blocking plate 11 has a tapered shape, and both sides of the bottom 11A of the blocking plate 11 A rising portion 11C is formed at the end, and the width of the rising portion 11C is large enough to receive the ear-shaped protrusion 7 of the movable contact piece 6, and the tip of the rising portion 11C has a tip. An inclined portion 11 </ b> D is formed from the end toward the rear end. Reference numeral 21 denotes a first converter (upper converter), which is formed with a lever mounting hole 21A into which the lever 22 is inserted and a pin mounting hole 21B into which the pin 24 is mounted. A sliding rod 26 having a coil spring 25 mounted on both sides of the position of the lever mounting hole 21A is mounted, and a central portion corresponding to the position of the lever mounting hole 21A is connected to the lower end 22B of the lever 22. A receiving portion 27 to be engaged and a spring 28 to be engaged with the receiving portion 27 are mounted. Reference numeral 29 denotes a second converter disposed below the first converter 21, and a U-shaped main body 29 </ b> A having an arcuate receiving portion 29 </ b> B for receiving the pin 24 formed thereon, It is composed of a bifurcated arm 29C that drives the blocking plate 11 provided in the lower part of the letter-shaped main body 29A in the horizontal direction. Note that both ends of the pin 24 are engaged with the receiving portion 1 </ b> A of the housing side wall 1. Therefore, the rotational movement of the bifurcated arm 29 </ b> C due to the rotation of the pin 24 is changed to the horizontal direction of the blocking plate 11 by the engagement with the round pin 13. An operation button 23 is attached to the upper portion of the lever 22. However, a lever may be used instead of the operation button 23 as the operation member.

したがって、レバー２２の操作による第１の転換子２１の回転速度に関わらず、スプリング反転駆動機構による一定の高速動作を行うような水平運動に変換することができる。
そこで、さらに、本発明の消弧装置付き直流電流遮断用小形スイッチの動作について詳細に説明する。 Therefore, irrespective of the rotation speed of the first converter 21 by the operation of the lever 22, it can be converted into a horizontal motion that performs a constant high-speed operation by the spring reversal drive mechanism.
Accordingly, the operation of the small switch for interrupting direct current with the arc extinguishing device of the present invention will be described in detail.

本発明は、（１）直流電流を遮断する際に発生するアークを、固定接点４と可動接点８との間に絶縁性と耐熱性の高い材質からなる遮断板１１を挿入することによりアークを消弧して遮断する。（２）遮断板１１を駆動する速度は、スイッチの操作部の速度に因らず一定で、かつ高速となる駆動機構を有する。（３）固定接点４と可動接点８との閉時（ＯＮ時）には十分な接触圧力が得られ、一方、接点の開時（ＯＦＦ時）には可動接片６に掛かる力をより少なくし、固定接点４から可動接点８が開きやすくなるような機構を有し、確実性を得るために出力端子５に片側固定された片持ちバネ型の可動接片６を有する。   According to the present invention, (1) an arc generated when a direct current is interrupted is inserted between a fixed contact 4 and a movable contact 8 by inserting an interrupting plate 11 made of a material having high insulation and heat resistance. Arc off and shut off. (2) The speed at which the blocking plate 11 is driven has a driving mechanism that is constant and high regardless of the speed of the operation portion of the switch. (3) Sufficient contact pressure can be obtained when the fixed contact 4 and the movable contact 8 are closed (ON), while less force is applied to the movable contact 6 when the contact is open (OFF). The movable contact 8 has a mechanism that facilitates the opening of the movable contact 8 from the fixed contact 4, and has a cantilever spring type movable contact piece 6 that is fixed to the output terminal 5 on one side in order to obtain certainty.

以上により、磁界等によりアークを引き伸ばして消孤する方式の不安定要因を排除して確実にアークを消孤することができる。
以下、更に本発明の特徴について詳細に説明する。
まず、アーク遮断機構について説明する。
図１に示すように、スイッチ筐体の底板２に固定された固定接点４と、同じく筐体の底板２に固定された出力端子５に片側が固定されたアーチ状の可動接片６が、距離をもって配置されている。図２に示すように、固定接点４には筐体の底板２に形成された固定接点４を固定するための穴２Ｂが設けられ、この穴２Ｂに連設する狭い長溝２Ｃが形成される凹部（ザグリ部）２Ｄが形成され、この凹部２Ｄに連設する狭い長溝２Ｃが形成されている。凹部２Ｄの深さは固定接点４の高さより僅かに深く、その幅は固定接点４の径とほぼ同寸法である。アークの消弧に機能する狭い長溝２Ｃは、筐体の底板２における可動接片６の固定部と反対方向に一定の長さで設けられる。 As described above, the arc can be reliably extinguished by eliminating the unstable factor of the method of extinguishing the arc by a magnetic field or the like.
Hereinafter, the features of the present invention will be described in detail.
First, the arc interruption mechanism will be described.
As shown in FIG. 1, a fixed contact 4 fixed to the bottom plate 2 of the switch housing, and an arch-shaped movable contact piece 6 fixed on one side to an output terminal 5 which is also fixed to the bottom plate 2 of the housing, Arranged at a distance. As shown in FIG. 2, the fixed contact 4 is provided with a hole 2B for fixing the fixed contact 4 formed on the bottom plate 2 of the housing, and a concave portion in which a narrow long groove 2C connected to the hole 2B is formed. (Counterbore portion) 2D is formed, and a narrow long groove 2C connected to the recess 2D is formed. The depth of the recess 2 </ b> D is slightly deeper than the height of the fixed contact 4, and the width thereof is approximately the same as the diameter of the fixed contact 4. The narrow long groove 2C that functions to extinguish the arc is provided with a constant length in the opposite direction to the fixed portion of the movable contact piece 6 in the bottom plate 2 of the housing.

図１及び図３に示すように、可動接片６はバネ性を持つ導電性の板材をアーチ状に曲げたアーチ形状部を有しており、出力端子５に固定される一端部６Ａは反対側に可動接点８を有し、スイッチ筐体に取り付けられた状態では、そのバネ性によって固定接点４に押し当てられて、電気回路の導通が行われる。
また、可動接片６は可動接点８の位置のやや後方の両側に耳状の突部７を有し、その耳状の突部７は側方から見ると半円弧状をなしている。 As shown in FIGS. 1 and 3, the movable contact piece 6 has an arch-shaped portion obtained by bending a conductive plate material having a spring property into an arch shape, and one end portion 6A fixed to the output terminal 5 is opposite. In a state where the movable contact 8 is provided on the side and attached to the switch housing, the spring is pressed against the fixed contact 4 to conduct the electric circuit.
Further, the movable contact piece 6 has ear-shaped protrusions 7 on both sides slightly behind the position of the movable contact 8, and the ear-shaped protrusion 7 has a semicircular shape when viewed from the side.

更に、図１及び図４に示すように、絶縁性と耐熱性の高い材質でできた遮断板１１は、接点の開時（ＯＦＦ時）には固定接点４と可動接点８との間に位置し、接点閉時（ＯＮ時）には固定接点４と可動接片６が固定される出力端子５との間に位置し、スイッチ非操作時は必ずそのどちらかに位置するように構成される。
図４に示すように、遮断板１１の底部１１Ａの先端部１１Ｂはテーパー形状をなし、底部１１Ａの両側には立ち上がり部１１Ｃを有する。立ち上がり部１１Ｃの幅は、前記可動接片６の耳状の突部７を受け止めるのに十分な幅を有し、側方から見ると先端から後端に向って高くなっている傾斜部１１Ｄを有している。 Further, as shown in FIGS. 1 and 4, the blocking plate 11 made of a material having high insulation and heat resistance is positioned between the fixed contact 4 and the movable contact 8 when the contact is opened (OFF). When the contact is closed (ON), it is positioned between the fixed contact 4 and the output terminal 5 to which the movable contact piece 6 is fixed, and is always positioned either when the switch is not operated. .
As shown in FIG. 4, the front end portion 11B of the bottom portion 11A of the blocking plate 11 has a tapered shape, and has rising portions 11C on both sides of the bottom portion 11A. The rising portion 11C has a sufficient width to receive the ear-shaped protrusion 7 of the movable contact piece 6, and an inclined portion 11D that is higher from the front end to the rear end when viewed from the side. Have.

固定接点４と可動接点８とが閉じた状態（ＯＮ状態）から開いた状態（ＯＦＦ状態）に移行する場合、図５に示すように、遮断板１１が固定接点４と可動接点８に向かって移動し、遮断板１１の両側端の立ち上がり部１１Ｂが耳状の突部７を押し上げ、閉じている固定接点４と可動接点８とを開かせる。それと同時に遮断板１１のテーパー形状の先端部１１Ｂを固定接点４と可動接点８との間に滑り込ませ、図６に示すように、必要最低限の距離だけ開いた固定接点４と可動接点８との間に発生するアークを前方へ押し出すように遮断板１１が水平方向に移動する。アークは、スイッチ筐体の底板２の狭い長溝２Ｃの中へ押し込まれるように押し出されこの狭い長溝２Ｃの終端段部２Ｅで遮断板１１にて阻まれ断ち切られる。   When the fixed contact 4 and the movable contact 8 shift from the closed state (ON state) to the open state (OFF state), the blocking plate 11 moves toward the fixed contact 4 and the movable contact 8 as shown in FIG. Then, the rising portions 11B on both side ends of the blocking plate 11 push up the ear-shaped protrusion 7 to open the closed fixed contact 4 and the movable contact 8. At the same time, the tapered tip portion 11B of the blocking plate 11 is slid between the fixed contact 4 and the movable contact 8, and as shown in FIG. The blocking plate 11 moves in the horizontal direction so as to push the arc generated during the period forward. The arc is pushed out so as to be pushed into the narrow long groove 2C of the bottom plate 2 of the switch housing, and is blocked by the blocking plate 11 at the end step portion 2E of the narrow long groove 2C and cut off.

更に、遮断板１１と筐体の底板の床面２Ａとの僅かな隙間に引き続けたアークが存在する場合は、図７に示されるように、最終的に遮断板１１が筐体側壁１に当接し、遮断板１１の先端部１１Ｂの上面が筐体の空間部１Ｂのひさし１Ｃに挟み込まれることによって完全に断ち切られる。
以上のように、機械的にアークを引く方向を制御することにより、最小の状態で素早くアークを断ち切るようにし、従来のように永久磁石などに頼らずに、不安定要因を排除し、確実にアークを消弧することができる。 Further, when there is an arc that continues to be pulled in a slight gap between the shielding plate 11 and the floor surface 2A of the bottom plate of the housing, the shielding plate 11 is finally attached to the housing side wall 1 as shown in FIG. The upper surface of the front end portion 11B of the blocking plate 11 is completely cut off by being sandwiched between the eaves 1C of the space portion 1B of the housing.
As described above, by controlling the direction of drawing the arc mechanically, the arc can be quickly cut off in the minimum state, and the unstable factor can be eliminated reliably without relying on permanent magnets as in the past. The arc can be extinguished.

次に、遮断板１１及び可動接片６の駆動機構について説明する。
遮断板１１を動作させるために、スプリング反転機構を用いることにより、固定接点４と可動接点８との開閉に関わる遮断板１１の動作速度を操作部（レバー２２）の操作速度と無関係とし、遮断板１１の水平方向への高速動作を実現するようにした。
スプリング反転機構は、操作部であるレバー２２の操作部分と反対端は反対側の端部（下端部２２Ｂ）を、それとは別の回転軸を持つ第２の転換子２９のコの字形状の本体２９Ａの内側部分とコイルスプリング２８で結び、レバー２２を操作することによってコイルスプリング２８の圧縮力を解放して第２の転換子２９が回転する機構である。操作部としてのレバー２２と第２の転換子２９は直接固定連結されていないので、レバー２２の操作速度と第２の転換子２９の駆動速度は無関係となり、また、コイルスプリング２８の圧縮力が解放される速度が第２の転換子２９の回転速度となるため、第２の転換子２９の駆動速度は高速運動となる。 Next, the drive mechanism for the blocking plate 11 and the movable contact piece 6 will be described.
By using a spring reversing mechanism to operate the shut-off plate 11, the operating speed of the shut-off plate 11 related to the opening and closing of the fixed contact 4 and the movable contact 8 is made independent of the operating speed of the operating portion (lever 22). The high-speed operation of the plate 11 in the horizontal direction was realized.
In the spring reversing mechanism, the opposite end to the operation portion of the lever 22 which is the operation portion is the opposite end portion (lower end portion 22B), and the U-shaped second converter 29 having a rotation axis different from the end portion. This is a mechanism in which the second converter 29 rotates by releasing the compressive force of the coil spring 28 by connecting the inner portion of the main body 29A with the coil spring 28 and operating the lever 22. Since the lever 22 and the second converter 29 as the operation unit are not directly fixedly connected, the operation speed of the lever 22 and the driving speed of the second converter 29 are irrelevant, and the compression force of the coil spring 28 is Since the released speed is the rotational speed of the second converter 29, the driving speed of the second converter 29 is a high-speed motion.

また、このスプリング反転機構においては、レバー２２の操作によって圧縮されたコイルスプリング２８は操作部であるレバー２２の倒れる方向に第２の転換子２９を付勢し、操作終了時にはレバー２２と第２の転換子２９は常にくの字又は逆くの字の位置関係となる。
更に、その第２の転換子２９のコの字形状の本体２９Ａの下部には、二股の腕２９Ｃが突出しているので、その二股の腕２９Ｃに遮断板１１の一部に設けた丸ピン形状部１３を挟み込ませることによって、レバー２２の操作に伴って第２の転換子２９が円弧運動すると、遮断板１１が水平運動するようになる。なお、遮断板１１は、操作部であるレバー２２の倒れる方向と同じ方向に水平運動し、したがって、レバー２２の操作終了時には常にレバー２２が倒れている方向と同じ方向に位置する。 Further, in this spring reversing mechanism, the coil spring 28 compressed by the operation of the lever 22 urges the second converter 29 in the direction in which the lever 22 as the operation portion falls, and at the end of the operation, The converter 29 is always in a positional relationship of a square or reverse letter.
Further, since a bifurcated arm 29C protrudes from the lower part of the U-shaped main body 29A of the second converter 29, a round pin shape provided on a part of the blocking plate 11 on the bifurcated arm 29C. By sandwiching the portion 13, when the second converter 29 moves in an arc as the lever 22 is operated, the blocking plate 11 moves horizontally. In addition, the blocking plate 11 moves horizontally in the same direction as the direction in which the lever 22 that is the operation unit falls, and therefore, when the operation of the lever 22 is finished, it is always located in the same direction as the direction in which the lever 22 is tilted.

以上が本発明の消弧装置付き直流電流遮断用スイッチの基本的な動作の説明であるが、可動接点８を遮断板１１が持ち上げる構造であるため、可動接片６のバネ圧力は軽くすることが望ましいので、ＯＮ時には可動接点８を押さえ込む圧力に不足を生じる恐れがある。そのために以下の対応策を講じることにした。
以下、ＯＮ時の接点間圧力の確保について説明する。 The above is the description of the basic operation of the DC current interrupting switch with the arc extinguishing device of the present invention. Since the movable contact 8 is lifted by the interrupting plate 11, the spring pressure of the movable contact piece 6 should be reduced. Therefore, there is a possibility that the pressure for pressing the movable contact 8 is insufficient when the switch is ON. Therefore, we decided to take the following countermeasures.
Hereinafter, securing of the pressure between the contacts at the time of ON will be described.

図１０に示すように、可動接点８から延びて上方へ折り返された折曲部９と滑動棒２６がその上を滑動する滑動部１０からなるへの字形状の可動接片６に比べると厚めの板状体が、滑動部１０に押し付けられる絶縁体からなる滑動棒２６を介して可動接点８を押し下げることによって、可動接点８の接触圧力が確保される。滑動棒２６とそのバネ２５は、上記した操作部（レバー）２２に取り付けられている第１の転換子２１に収容されている。第１の転換子２１はレバー２２の動きと連動して、その回転軸（ピン）２４を中心にして円弧運動する。それに伴い、滑動棒２６はそのバネ２５のバネ力によって可動接片６を押し下げながら滑動部１０上を滑動する。   As shown in FIG. 10, it is thicker than the U-shaped movable contact piece 6 which is composed of the bending portion 9 extending from the movable contact 8 and folded upward and the sliding rod 26 sliding thereon. The plate-like body pushes down the movable contact 8 via the sliding rod 26 made of an insulator pressed against the sliding portion 10, so that the contact pressure of the movable contact 8 is secured. The sliding rod 26 and its spring 25 are accommodated in the first converter 21 attached to the operation portion (lever) 22 described above. The first converter 21 moves in an arc around the rotation axis (pin) 24 in conjunction with the movement of the lever 22. Along with this, the sliding rod 26 slides on the sliding portion 10 while pushing down the movable contact piece 6 by the spring force of the spring 25.

上記したように、可撓性を有するアーチ形状の可動接片６の上に可撓性を有さないへの字形状の板材からなる折曲部９と滑動部１０が配置されている。可動接片６と折曲部９及び滑動部１０とは、可動接点８の取付部で可動接点８をリベットとして互いに繋ぎ合わされ、滑動部１０の終端部１０Ａ付近が可動接片６のアーチ頂点６Ｂ付近と接するように曲げ加工される。   As described above, the bent portion 9 and the sliding portion 10 made of a plate-like plate material having no flexibility are arranged on the flexible arch-shaped movable contact piece 6. The movable contact piece 6 and the bent portion 9 and the sliding portion 10 are connected to each other at the attachment portion of the movable contact 8 with the movable contact 8 as a rivet, and the vicinity of the terminal portion 10A of the sliding portion 10 is the arch apex 6B of the movable contact piece 6. It is bent so that it touches the vicinity.

可動接片６が接続される出力端子５は、折曲部５Ａと上方へと突出した直立支点５Ｂとからなるクランク形状をしており、直立支点５Ｂの先端が可動接片６のアーチ頂点６Ｂ（以下、この点をＸ点という）に近接して位置するようにして、筐体の底板２に可動接片６と共にスポット溶接等で留められている。
固定接点４と可動接点８のＯＮ時は、図８に示すように、レバー２２の操作によって第１の転換子２１が回転し、滑動棒２６がＸ点を通過して固定接点４および可動接点８側に移動すると、折曲部９と滑動部１０がＸ点を支点として可動接点８を押し下げる。これによって、滑動棒２６を介してバネの力を十分に可動接点８に加えることができる。 The output terminal 5 to which the movable contact piece 6 is connected has a crank shape including a bent portion 5A and an upright fulcrum 5B protruding upward, and the tip of the upright fulcrum 5B is an arch apex 6B of the movable contact piece 6. It is fastened to the bottom plate 2 of the casing together with the movable contact piece 6 by spot welding or the like so as to be positioned close to (hereinafter, this point is referred to as X point).
When the fixed contact 4 and the movable contact 8 are ON, as shown in FIG. 8, the first converter 21 is rotated by the operation of the lever 22, and the sliding rod 26 passes through the point X, so that the fixed contact 4 and the movable contact are moved. When it moves to the 8 side, the bending part 9 and the sliding part 10 push down the movable contact 8 by using the X point as a fulcrum. Thus, the spring force can be sufficiently applied to the movable contact 8 via the slide rod 26.

導電回路的には、可撓性を高めるために薄くしてある板材部分をショートカットして、可撓性を有さない折曲部９および滑動部１０（厚い部材）から出力端子５（厚い部材）に直接接続されるため、接触抵抗低減による発熱対策としても機能する。また、可動接片６（薄い部材）が放熱板となり発熱対策として機能する。
一方、固定接点４と可動接点８のＯＦＦ時は、図９に示すように、レバー２２の操作によって、滑動棒２６がＸ点を逆方向に通過して固定接点４および可動接点８と反対方向に移動すると、遮断板１１が可動接片６を持ち上げる方向に移動し始める。このとき、滑動棒２６を押し下げるコイルバネ２５は伸びきって力が少なくなるので、持ち上がる方向に動く可動接片６は、そのアーチ形状の根元付近（耳状の突部７付近）が上方へと軽く撓むことになる。これにより、遮断板１１がスムーズに高速で固定接点４と可動接点８との間に狭み込まれることが可能になる。 In terms of the conductive circuit, the plate portion which is thinned in order to increase flexibility is used as a shortcut, and the output terminal 5 (thick member) from the bent portion 9 and the sliding portion 10 (thick member) which do not have flexibility. ) Directly function as a countermeasure against heat generation by reducing contact resistance. Further, the movable contact piece 6 (thin member) serves as a heat radiating plate and functions as a countermeasure against heat generation.
On the other hand, when the fixed contact 4 and the movable contact 8 are OFF, as shown in FIG. 9, the sliding rod 26 passes the point X in the reverse direction by the operation of the lever 22, and is opposite to the fixed contact 4 and the movable contact 8. When moving to, the blocking plate 11 begins to move in the direction of lifting the movable contact piece 6. At this time, since the coil spring 25 that pushes down the sliding rod 26 is fully extended and the force is reduced, the movable contact piece 6 that moves in the lifting direction is lightly upward in the vicinity of the arch-shaped root (near the ear-shaped protrusion 7). It will bend. Thereby, the blocking plate 11 can be smoothly narrowed between the fixed contact 4 and the movable contact 8 at high speed.

以上のように、本発明は、可動接片６に可撓性を有する薄い板材と可撓性を有さない厚い板材からなる折曲部９および滑動部１０とを組み合わせて可動接片６を構成し、固定部と接触部分との間に支点を追加することにより、ＯＮ時に十分な接触圧力を確保しつつ、ＯＦＦ時には遮断板が軽く固定接点４と可動接点８間に入りアークを遮断しやすくなるようにした。   As described above, in the present invention, the movable contact piece 6 is formed by combining the movable contact piece 6 with the flexible thin plate material and the bent portion 9 and the sliding portion 10 made of a thick plate material without flexibility. By constructing and adding a fulcrum between the fixed part and the contact part, while ensuring sufficient contact pressure at the time of ON, the shut-off plate lightly enters between the fixed contact 4 and the movable contact 8 at the time of OFF and interrupts the arc. Made it easier.

次に、強制開離とアーク遮断時間の短縮について説明する。
図１０に示すように、可動接片６の可動接点８は、先端の方が僅かに低く前のめり状態に取り付けられている。
これにより、図１１（ａ）に示すように、固定接点４と当たる時（ＯＮ開始時）、まず先端が当たり、図１１（ｂ）に示すように、撓みやすい可動接片６の薄板のアーチ状部分が上から滑動棒２６で押さえられることにより可動接点８が平らに固定接点４に接触するようになる。ＯＦＦ時にはその逆になる。 Next, forced separation and shortening of the arc interruption time will be described.
As shown in FIG. 10, the movable contact 8 of the movable contact piece 6 is attached to the front side in a slightly lower end.
Thus, as shown in FIG. 11 (a), when it comes into contact with the fixed contact 4 (at the start of ON), the tip first hits, and as shown in FIG. 11 (b), a thin plate arch of the movable contact piece 6 that is easily bent. The movable contact 8 is brought into contact with the fixed contact 4 flatly by being pressed by the slide rod 26 from above. The opposite is true when OFF.

このように、摺動的な固定接点４と可動接点８の接触の仕方、開離の仕方が、溶着対策の一助となる。更には、固定接点４と可動接点８のＯＦＦ時に、遮断板１１が可動接点８の後端方向から、斜めに入るので、接触部分を斜めに引き剥がすように働く強制開離機構となる。
固定接点４と可動接点８のＯＦＦ時には、可動接点８の先端部分が最後に固定接点４から離れるため、後端から固定接点４と可動接点８との間に侵入する遮断板１１は、発生するアークを接点の径の最終位置で捉え押し切る態様になる。このようにオフセットした接触の仕方が、アークによる接点中央面磨耗低減と遮断時間短縮に貢献する。 As described above, the way of contact between the slidable fixed contact 4 and the movable contact 8 and the way of separation help the countermeasure against welding. Furthermore, when the fixed contact 4 and the movable contact 8 are OFF, the blocking plate 11 enters obliquely from the rear end direction of the movable contact 8, so that a forced separation mechanism that acts to peel the contact portion obliquely is obtained.
When the fixed contact 4 and the movable contact 8 are OFF, the front end portion of the movable contact 8 is finally separated from the fixed contact 4, so that a blocking plate 11 that enters between the fixed contact 4 and the movable contact 8 from the rear end is generated. The arc is caught and pushed at the final position of the contact diameter. This offset contact method contributes to the reduction of the contact center surface wear caused by the arc and the shortening of the interruption time.

なお、本発明は上記実施例に限定されるものではなく、本発明の趣旨に基づき種々の変形が可能であり、これらを本発明の範囲から排除するものではない。   In addition, this invention is not limited to the said Example, Based on the meaning of this invention, a various deformation | transformation is possible and these are not excluded from the scope of the present invention.

本発明の消弧装置付き直流電流遮断用小形スイッチは、磁界等によりアークを引き伸ばして消孤する方式の不安定要因を排除して確実にアークを消孤することができる、消弧装置付き直流電流遮断用小形スイッチとして利用可能である。   The small switch for DC current interruption with an arc extinguishing device of the present invention eliminates instability factors of the method of extinguishing and extinguishing the arc by a magnetic field or the like, and can extinguish the arc reliably. It can be used as a small switch for interrupting current.

１ 筐体側壁
１Ａ 筐体側壁の受部
１Ｂ 筐体側壁の空間部
１Ｃ 空間部のひさし
２ 筐体の底板
２Ａ 底板の床面
２Ｂ 固定接点を固定するための穴
２Ｃ 狭い長溝
２Ｄ 凹部（ザグリ部）
２Ｅ 狭い長溝の終端段部
３ 固定端子
４ 固定接点
５ 出力端子
５Ａ 出力端子の上部の曲折部
５Ｂ 直立支点
６ 可動接片
６Ａ 可動接片の一端部
６Ｂ 可動接片のアーチ頂点
７ 耳状の突部
８ 可動接点
９ 可動接片の曲折部（厚めの板状体）
１０ 可動接片の滑動部（厚めの板状体）
１０Ａ 滑動部の終端部
１１ 遮断板
１１Ａ 遮断板の底部
１１Ｂ 遮断板の底部の先端部
１１Ｃ 立ち上がり部
１１Ｄ 立ち上がり部の傾斜部
１２ 摺動体
１３ 丸ピン
２１ 第１の転換子
２１Ａ レバー装着用穴
２１Ｂ ピン装着用穴
２２ レバー
２２Ｂ レバーの下端部
２３ 操作ボタン
２４ ピン
２５ コイルスプリング
２６ 滑動棒
２７ レバーの下端部の受部
２９ 第２の転換子
２９Ａ コの字形状の本体
２９Ｂ ピンの受部
２９Ｃ 二股の腕 DESCRIPTION OF SYMBOLS 1 Housing side wall 1A Housing side wall receiving part 1B Housing side wall space 1C Spacer eaves 2 Housing bottom plate 2A Bottom plate floor surface 2B Hole for fixing fixed contact 2C Narrow long groove 2D Concavity )
2E Terminal step portion of narrow long groove 3 Fixed terminal 4 Fixed contact 5 Output terminal 5A Bent portion 5B of output terminal 5B Upright fulcrum 6 Movable contact piece 6A One end portion of movable contact piece 6B Arch apex of movable contact piece 7 Ear-shaped projection Part 8 Movable contact 9 Bent part of the movable contact piece (thick plate)
10 Sliding part of the movable contact piece (thick plate)
10A End portion of sliding portion 11 Blocking plate 11A Bottom portion of blocking plate 11B Tip end portion of blocking plate 11C Rising portion 11D Ramp portion of rising portion 12 Sliding body 13 Round pin 21 First converter 21A Lever mounting hole 21B Pin Mounting hole 22 Lever 22B Lever lower end portion 23 Operation button 24 Pin 25 Coil spring 26 Slide rod 27 Lever lower end receiving portion 29 Second converter 29A U-shaped main body 29B Pin receiving portion 29C Bifurcated arm

Claims (10)

固定接点と可動接片の可動接点との間に絶縁性と耐熱性の高い材質からなる遮断板を挿入し、機械的にアークを引く方向を制御することにより、直流電流を遮断する際に発生するアークを確実に消弧して遮断することを特徴とする消弧装置付き直流電流遮断用小形スイッチ。   Occurs when interrupting DC current by inserting a breaker plate made of highly insulating and heat-resistant material between the fixed contact and the movable contact of the movable contact piece, and controlling the direction of drawing the arc mechanically A small switch for interrupting a direct current with an arc extinguishing device, wherein the arc to be interrupted is surely extinguished and interrupted. 請求項１記載の消弧装置付き直流電流遮断用小形スイッチにおいて、前記遮断板を駆動する速度を、スイッチの操作部の速度に因らず一定であり、かつ高速とするスプリング反転駆動機構を具備することを特徴とする消弧装置付き直流電流遮断用小形スイッチ。   2. A small switch for interrupting a direct current with an arc extinguishing device according to claim 1, further comprising a spring reversal drive mechanism that makes the speed of driving the interrupting plate constant and high regardless of the speed of the operation portion of the switch. A small switch for interrupting direct current with an arc extinguishing device. 請求項２記載の消弧装置付き直流電流遮断用小形スイッチにおいて、前記遮断板は、先端部がテーパ形状の底部と、該底部の両側に形成される先端が傾斜状の立ち上がり部とを具備し、該立ち上がり部により前記可動接片の先端部両側に形成される耳状の突部を押し上げて前記固定接点から前記可動接点を開き、その開かれた箇所に前記遮断板の先端部をさらに挿入するようにしたことを特徴とする消弧装置付き直流電流遮断用小形スイッチ。   3. The small switch for interrupting a direct current with an arc-extinguishing device according to claim 2, wherein the blocking plate includes a bottom portion having a tapered tip portion and rising portions having inclined tip portions formed on both sides of the bottom portion. Then, the rising portion pushes up the ear-shaped protrusions formed on both sides of the distal end portion of the movable contact piece to open the movable contact from the fixed contact, and further insert the distal end portion of the blocking plate into the opened position. A small-sized switch for interrupting direct current with an arc extinguishing device, characterized in that 請求項２記載の消弧装置付き直流電流遮断用小形スイッチにおいて、前記固定接点と前記可動接点との間に生じるアークが、前記遮断板の先端部側で引き伸ばされ、前記固定接点の周辺から前方へ延びる筐体の底板に形成される狭い長溝の中へ押し込まれるように押し出され、前記狭い長溝の終端段部で前記遮断板にて阻まれて断ち切られるようにしたことを特徴とする消弧装置付き直流電流遮断用小形スイッチ。   3. A small switch for interrupting a direct current with an arc extinguishing device according to claim 2, wherein an arc generated between the fixed contact and the movable contact is stretched on the tip end side of the interrupting plate, and forward from the periphery of the fixed contact. The arc extinguishing is characterized by being pushed out into a narrow long groove formed in a bottom plate of a casing extending to be cut off by being blocked by the blocking plate at the end step of the narrow long groove Small switch for DC current interruption with device. 請求項４記載の消弧装置付き直流電流遮断用小形スイッチにおいて、前記遮断板は、前記固定接点と前記可動接点とが完全に開かれた状態のときには前記遮断板の先端部が小形スイッチの筐体側壁の空間部のひさしに挟み込まれるように構成し、前記筐体の底板と前記遮断板との僅かな隙間に引き続けたアークが存在する場合にもアークを前記空間部へ閉じ込め完全に消弧するようにしたことを特徴とする消弧装置付き直流電流遮断用小形スイッチ。   5. The small switch for interrupting a direct current with an arc extinguishing device according to claim 4, wherein when the fixed contact and the movable contact are completely opened, the end of the blocking plate is a small switch housing. It is configured to be sandwiched between the eaves of the space portion of the body side wall, and even when there is an arc that continues to be pulled in a slight gap between the bottom plate of the housing and the blocking plate, the arc is confined in the space portion and completely extinguished. A small-sized switch for interrupting direct current with an arc extinguishing device, characterized by arcing. 請求項２記載の消弧装置付き直流電流遮断用小形スイッチにおいて、前記可動接片は、前記可動接点の前方から上部に折り返される厚めの板状体からなる折曲部と、該折曲部に連設される、滑動棒により押し下げられるやはり厚めの板状体からなる滑動部とをさらに具備することを特徴とする消弧装置付き直流電流遮断用小形スイッチ。   3. The small switch for interrupting a direct current with an arc extinguishing device according to claim 2, wherein the movable contact piece is a bent portion formed of a thick plate-like body folded back from the front to the upper portion of the movable contact, and the bent portion. A small-sized DC current interrupting switch with an arc extinguishing device, further comprising a sliding portion formed of a thick plate-like body that is pressed down by a sliding rod. 請求項６記載の消弧装置付き直流電流遮断用小形スイッチにおいて、前記出力端子は折曲部と上方へ突出した直立支点とからなるクランク形状であり、前記直立支点は前記可動接片のアーチ頂点に近接して位置するように固定されていることを特徴とする消弧装置付き直流電流遮断用小形スイッチ。   7. The small switch for DC current interruption with an arc extinguishing device according to claim 6, wherein the output terminal has a crank shape including a bent portion and an upright fulcrum protruding upward, and the upright fulcrum is an arch apex of the movable contact piece. A small switch for interrupting a direct current with an arc extinguishing device, characterized in that it is fixed so as to be located close to the arc. 請求項６又は７記載の消弧装置付き直流電流遮断用小形スイッチにおいて、前記固定接点と前記可動接点の接触時（ＯＮ時）には、小形スイッチの転換子が回転し、該転換子の滑動棒が前記アーチ頂点を前方へと通過して前記可動接点側に移動すると、前記可動接片の前記折曲部と前記滑動部が前記アーチ頂点を支点として前記可動接点を押し下げることにより、前記滑動棒を介してバネの力を十分に前記可動接点に加えるようにしたことを特徴とする消弧装置付き直流電流遮断用小形スイッチ。   The small switch for DC current interruption with an arc-extinguishing device according to claim 6 or 7, wherein the switch of the small switch rotates when the fixed contact and the movable contact are in contact with each other (sliding). When the rod passes the arch apex forward and moves to the movable contact side, the bending portion and the sliding portion of the movable contact piece push down the movable contact with the arch apex as a fulcrum, thereby causing the sliding A small switch for interrupting a direct current with an arc extinguishing device, wherein a force of a spring is sufficiently applied to the movable contact through a rod. 請求項６、７又は８記載の消弧装置付き直流電流遮断用小形スイッチにおいて、前記固定接点と前記可動接点の開時（ＯＮ時）には、前記アーチ頂点の後方へと前記滑動棒を移動させることにより前記可動接片に掛かる力を低減し、前記固定接点から前記可動接点が開きやすくなるような機構としたことを特徴とする消弧装置付き直流電流遮断用小形スイッチ。   9. The small switch for interrupting direct current with an arc extinguishing device according to claim 6, 7 or 8, wherein when the fixed contact and the movable contact are open (when ON), the sliding rod is moved to the rear of the arch apex. A small switch for interrupting a direct current with an arc extinguishing device, characterized in that a force applied to the movable contact piece is reduced to facilitate opening of the movable contact from the fixed contact. 請求項６、７、８又は９記載の消弧装置付き直流電流遮断用小形スイッチにおいて、前記可動接片の片側は出力端子に固定されるようにしたことを特徴とする消弧装置付き直流電流遮断用小形スイッチ。   10. A small-sized DC current interrupting switch with an arc extinguishing device according to claim 6, 7, 8 or 9, wherein one side of the movable contact piece is fixed to an output terminal. Small switch for shutoff.
JP2011077151A 2011-03-31 2011-03-31 Small switch for DC current interruption with arc extinguishing device Expired - Fee Related JP5758169B2 (en)

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* Cited by examiner, † Cited by third party
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CN103646804A (en) * 2013-11-30 2014-03-19 德力西电气有限公司 Forced arc extinguishing device of circuit breaker
EP2784795A1 (en) * 2013-03-27 2014-10-01 Abb Ag Electric switch
JP2014194862A (en) * 2013-03-28 2014-10-09 Nkk Switches Co Ltd Contact mechanism of small switch for blocking direct-current
CN105023782A (en) * 2014-04-17 2015-11-04 富士通电子零件有限公司 Electromagnetic relay
CN107342178A (en) * 2017-08-23 2017-11-10 河北宝凯电气股份有限公司 A kind of high-breaking miniature breaker
CN107359093A (en) * 2017-08-23 2017-11-17 张珂 A kind of shielding arc-suppressing method of contact of breaker
WO2020054432A1 (en) * 2018-09-14 2020-03-19 パナソニックＩｐマネジメント株式会社 Contact device and breaker device
WO2020054580A1 (en) * 2018-09-14 2020-03-19 パナソニックＩｐマネジメント株式会社 Breaker device
WO2020059086A1 (en) 2018-09-20 2020-03-26 株式会社生方製作所 Direct-current circuit breaker
WO2020158693A1 (en) * 2019-01-29 2020-08-06 パナソニックＩｐマネジメント株式会社 Shut-off device
CN113517159A (en) * 2021-04-13 2021-10-19 华能青岛热电有限公司 Electric protection device of direct current distributed energy wisdom lighting circuit

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JP2000164108A (en) * 1998-11-25 2000-06-16 Matsushita Electric Works Ltd Circuit breaker

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US2324621A (en) * 1942-06-30 1943-07-20 Stephen S Grady Electric switch
JPS61161626A (en) * 1984-12-28 1986-07-22 ラ　テレメカニク　エレクトリク Switchgear with insulation screen to be inserted between contacts for breaking
JP2000164108A (en) * 1998-11-25 2000-06-16 Matsushita Electric Works Ltd Circuit breaker

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2784795A1 (en) * 2013-03-27 2014-10-01 Abb Ag Electric switch
JP2014194862A (en) * 2013-03-28 2014-10-09 Nkk Switches Co Ltd Contact mechanism of small switch for blocking direct-current
CN103646804A (en) * 2013-11-30 2014-03-19 德力西电气有限公司 Forced arc extinguishing device of circuit breaker
CN105023782A (en) * 2014-04-17 2015-11-04 富士通电子零件有限公司 Electromagnetic relay
JP2015207378A (en) * 2014-04-17 2015-11-19 富士通コンポーネント株式会社 electromagnetic relay
CN107342178A (en) * 2017-08-23 2017-11-10 河北宝凯电气股份有限公司 A kind of high-breaking miniature breaker
CN107359093A (en) * 2017-08-23 2017-11-17 张珂 A kind of shielding arc-suppressing method of contact of breaker
WO2020054580A1 (en) * 2018-09-14 2020-03-19 パナソニックＩｐマネジメント株式会社 Breaker device
WO2020054432A1 (en) * 2018-09-14 2020-03-19 パナソニックＩｐマネジメント株式会社 Contact device and breaker device
WO2020059086A1 (en) 2018-09-20 2020-03-26 株式会社生方製作所 Direct-current circuit breaker
KR20200118885A (en) 2018-09-20 2020-10-16 가부시키가이샤 우부카타 세이사쿠쇼 DC circuit breaker
CN111886666A (en) * 2018-09-20 2020-11-03 株式会社生方制作所 Direct current breaker
US11495424B2 (en) 2018-09-20 2022-11-08 Ubukata Industries Co., Ltd. DC circuit breaker
CN111886666B (en) * 2018-09-20 2023-08-08 株式会社生方制作所 DC circuit breaker
WO2020158693A1 (en) * 2019-01-29 2020-08-06 パナソニックＩｐマネジメント株式会社 Shut-off device
CN113517159A (en) * 2021-04-13 2021-10-19 华能青岛热电有限公司 Electric protection device of direct current distributed energy wisdom lighting circuit

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