JPS6199349U - - Google Patents

Description

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

図はこの考案に係る回路しや断器の実施例の要
部を示すものであり、第１図は消弧板と固定接点
の関係を示す一部切欠した斜視図、第２図は消弧
板および圧力反射体の働きを示す説明図、第３図
は固定接触子と圧力反射体の一部切欠した分解斜
視図、第４図は可動接触子と圧力反射体の一部切
欠した分解斜視図、第５図および第６図は圧力反
射体の他の実施例を示すものであり、第５図は固
定接触子と圧力反射体の一部切欠した分解斜視図
、第６図は可動接触子と圧力反射体の一部切欠し
た分解斜視図、第７図は回路しや断器の従来例を
示すものであり、ａは一部切欠した平面図、ｂは
ａのｂ―ｂ線断面図である。 図において、各図中同一部分には同一符号を付
しており、２……固定接触子、２０２……固定接
点、３……可動接触子、３０２……可動接点、５
，５Ａ……消弧板、５ｂ……切欠溝、５ｃ……底
部、６，７……圧力反射体である。 The figures show the main parts of an embodiment of the circuit and breaker according to this invention. Fig. 1 is a partially cutaway perspective view showing the relationship between the arc extinguishing plate and the fixed contact, and Fig. 2 is the arc extinguishing plate. An explanatory diagram showing the functions of the plate and the pressure reflector. Figure 3 is an exploded perspective view with a partial cutout of the fixed contact and the pressure reflector. Figure 4 is an exploded perspective view with a partial cutout of the movable contact and the pressure reflector. 5 and 6 show other embodiments of the pressure reflector, FIG. 5 is a partially cutaway exploded perspective view of the fixed contact and the pressure reflector, and FIG. 6 is a movable contact. Fig. 7 is a partially cutaway exploded perspective view of the sensor and pressure reflector, and Fig. 7 shows a conventional example of a circuit breaker. It is a diagram. In the figures, the same parts in each figure are given the same reference numerals, 2... Fixed contact, 202... Fixed contact, 3... Movable contact, 302... Movable contact, 5
, 5A... Arc-extinguishing plate, 5b... Notch groove, 5c... Bottom, 6, 7... Pressure reflector.

Claims (1)

【実用新案登録請求の範囲】 (1) 固定接点を有する固定接触子、前記固定接
点に相対する可動接点を有する可動接触子および
前記可動接点の軌跡に沿つて複数個配置され、前
記固定接点と前記可動接点との開離時に発生した
アークを消弧する消弧板を有する回路しや断器に
おいて、前記接点の一部を突出させ、それ以外の
部分を覆い隠すように設けられた高抵抗材料から
なる圧力反射体を備えるとともに、前記消弧板の
それぞれにＵ字形状の切欠溝を設け、かつ前記切
欠溝底部の位置が前記軌跡に対してジグザグ状と
なるように、隣り合う消弧板の切欠溝底部と前記
軌跡との距離を異ならせたことを特徴とする回路
しや断器。 (2) 前記消弧板のＵ字形切欠溝が曲線状で、鋭
い隅部はなく滑らかであ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 fixed contact having a fixed contact, a movable contact having a movable contact facing the fixed contact, and a plurality of movable contacts arranged along the locus of the movable contact, In a circuit or disconnector having an arc extinguishing plate that extinguishes an arc generated when the movable contact is opened, a high resistance is provided so that a part of the contact protrudes and the other part is covered. A pressure reflector made of a material is provided, and each of the arc extinguishing plates is provided with a U-shaped notch groove, and adjacent arc extinguishing plates are arranged such that the bottom of the notch groove is in a zigzag shape with respect to the trajectory. A circuit breaker characterized in that the distance between the bottom of the cutout groove of the plate and the trajectory is made different. (2) The circuit breaker according to claim 1, wherein the U-shaped cutout groove of the arc-extinguishing plate is curved and smooth without sharp corners.