JPS5834279U

JPS5834279U - circuit break

Info

Publication number: JPS5834279U
Application number: JP12773781U
Authority: JP
Inventors: 伸示山県; 久常　文之; 寺地　淳一; 一吉安
Original assignee: 三菱電機株式会社
Priority date: 1981-08-27
Filing date: 1981-08-27
Publication date: 1983-03-05

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図ａは一般的な回路しゃ断器を示す平断面図、第１
図すは第１図ａの線Ｉ−Ｉにおける側断面図、第２図は
第１図の回路しゃ断器における金属粒子の挙動の模式的
説明図、第３図ａはこの考案の一実施例による回路しゃ
断器を示す一部を切−。欠いた平面図、第３図すは同一部を切欠いた側面図、第
４図ａおよびｂは第３図ａ及びｂに示す可動接触子と固
定接触子あの分解斜視図、第５図は第３図の回路しゃ断
器における金属粒子の挙動の模式的説明図、第６図ａお
よびｂは他の実施例を示す可動接触子および固定接触子
の分解斜視図である。２・・・固定接触子、２０１・・・固定導体、２０２・
・・固定接点、２０３・・・突起部、３・・・可動接触
子、３０１・・・可動導体、３０２・・・可動接点、５
・・・消弧板、５０１・・・切欠溝、６，７・・・圧力
反射体、６０１．６０２，７０１・・・貫通孔、６０５
゜７０５・・・溝。なお、図中、同一符号は同一または
相当部分を示す。Figure 1a is a plan sectional view showing a general circuit breaker;
The figure is a side cross-sectional view taken along line II-I in Figure 1a, Figure 2 is a schematic explanatory diagram of the behavior of metal particles in the circuit breaker of Figure 1, and Figure 3a is an embodiment of this invention. Cut off part of the circuit breaker. Figure 3 is a partially cut away side view, Figures 4a and 4b are exploded perspective views of the movable contact and fixed contact shown in Figures 3a and b, and Figure 5 is a side view with the same part cut away. FIG. 3 is a schematic explanatory diagram of the behavior of metal particles in the circuit breaker, and FIGS. 6 a and 6 b are exploded perspective views of a movable contact and a fixed contact showing other embodiments. 2... Fixed contact, 201... Fixed conductor, 202...
...Fixed contact, 203...Protrusion, 3...Movable contact, 301...Movable conductor, 302...Movable contact, 5
...Arc-extinguishing plate, 501...Notch groove, 6,7...Pressure reflector, 601.602,701...Through hole, 605
゜705...Groove. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

(1) At least one of a pair of electrical contacts consisting of a conductor and a contact fixed to the conductor is provided with a protrusion made of a material having substantially the same conductivity as the conductor and in contact with the conductor; A reaction force reflector made of a high-resistance material with higher resistivity than the conductor is placed on the conductor of the contact so as to surround the outer periphery of the contact, and is used to extinguish the arc that occurs between the contacts. The arc-extinguishing plate is provided with a cutout groove whose one end is open to the contact side, and the protrusion is made to protrude above the pressure reflector, and the surface area of the protrusion is reduced to the contactor on which the protrusion is provided. A circuit breaker configured with a surface area smaller than the surface area of the contacts.

(2) The circuit breaker according to claim 1, wherein the arc-extinguishing plate is made of a magnetic material or a non-magnetic material.

(3) A utility model in which the pressure reflector is provided with a groove that starts from one side of the contact and extends in the direction of travel of the arc, reaching as far as the protrusion if there is a protrusion, thereby exposing the surface of the conductor. A circuit breaker according to registered claim 11 or 2.