JPS6361741U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案の実施例の消弧部を示す斜視
図、第２図は第１図に示す消弧部を組込んだ回路
しや断器の接点閉成時の要部を示す断面図、第３
図は第１図に示す消弧部を組込んだ回路しや断器
の接点開成時の要部を示す断面図、第４図は従来
の技術による回路しや断器の消弧部を示す断面図
、第５図は第４図に示す消弧部の斜視図である。 反撥接点：２、可動接点：３、消弧板：７、絶
縁部材：８、消弧板：２１，２２、Ｌ字折曲部：
２１′，２２′。 Fig. 1 is a perspective view showing the arc extinguishing part of the embodiment of this invention, and Fig. 2 is a cross section showing the main parts of the circuit and disconnector incorporating the arc extinguishing part shown in Fig. 1 when the contacts are closed. Figure, 3rd
The figure is a sectional view showing the main parts of the circuit breaker incorporating the arc-extinguishing part shown in Fig. 1 when the contact is opened, and Figure 4 shows the arc-extinguishing part of the circuit breaker according to the conventional technology. The sectional view and FIG. 5 are perspective views of the arc extinguishing section shown in FIG. 4. Repulsion contact: 2, movable contact: 3, arc extinguishing plate: 7, insulating member: 8, arc extinguishing plate: 21, 22, L-shaped bent part:
21', 22'.

Claims (1)

【実用新案登録請求の範囲】 (1) 負荷電流を開閉する少なくとも一対の接点
の近傍に設けられ接点の開成時に発生するアーク
を消弧する複数の消弧板を所定間隔で実質的に平
行かつ相互に絶縁を保ちつつ重畳配置した回路し
や断器の消弧部において、 両端部の消弧板の少なくとも一方の消弧板の接
点に対向する前端部を消弧部の中央に向いかつ各
消弧板の接点に対向する端縁部との間に所定の間
隔を有するＬ字折曲部に形成し、かつ上記両端部
の消弧板を含む少なくとも一個の消弧板の後端部
に所定の幅の電気的絶縁部材を設けたことを特徴
とする回路しや断器。 (2) 前記電気的絶縁部材は消弧板の表面に形成
した絶縁材の被膜であることを特徴とする実用新
案登録請求の範囲第１項記載の回路しや断器。[Claims for Utility Model Registration] (1) A plurality of arc-extinguishing plates arranged near at least one pair of contacts that switch on and off the load current and extinguishing the arc generated when the contacts open are arranged substantially parallel to each other at predetermined intervals. In the arc-extinguishing parts of circuit shields and breakers that are arranged one on top of the other while maintaining mutual insulation, the front end of the arc-extinguishing plates at both ends, which faces the contact point of at least one of the arc-extinguishing plates, faces toward the center of the arc-extinguishing part, and each The arc-extinguishing plate is formed into an L-shaped bent portion having a predetermined distance between the end edge facing the contact point and the rear end of at least one arc-extinguishing plate including the arc-extinguishing plates at both ends. A circuit breaker or breaker characterized by being provided with an electrically insulating member having a predetermined width. (2) The circuit breaker according to claim 1, wherein the electrically insulating member is a coating of an insulating material formed on the surface of an arc-extinguishing plate.