JPS5963948U

JPS5963948U - circuit break

Info

Publication number: JPS5963948U
Application number: JP16074382U
Authority: JP
Inventors: 茂松本; 三原　寿信
Original assignee: 三菱電機株式会社
Priority date: 1982-10-22
Filing date: 1982-10-22
Publication date: 1984-04-27

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図は従来の回路しゃ断器を示す部分側断面図、第２
図は第１図の筐体のカバーの裏面を示す斜視図、第３図
はこの考案に係る回路しゃ断器の一実施例を示す部分側
断面図、第４図は第３図の筐体のカバーの裏面を示す斜
視図である。図において、各図中同一部分には同一符号を付しており
、１は固定導体ミ２は筐体、２Ａはカバー、５は固定接
点、６は可動子、７は可動接点、１４はグリッド、１６
は消弧室、１７は隔壁である。Figure 1 is a partial side sectional view showing a conventional circuit breaker;
The figure is a perspective view showing the back side of the cover of the casing shown in Fig. 1, Fig. 3 is a partial side sectional view showing one embodiment of the circuit breaker according to this invention, and Fig. 4 is a perspective view of the casing shown in Fig. 3. FIG. 3 is a perspective view showing the back side of the cover. In the figures, the same parts in each figure are given the same reference numerals, 1 is a fixed conductor, 2 is a housing, 2A is a cover, 5 is a fixed contact, 6 is a mover, 7 is a movable contact, and 14 is a grid. , 16
1 is an arc extinguishing chamber, and 17 is a partition wall.

Claims

[Scope of utility model registration request]

(1) A casing with a cover, a fixed conductor fixed to the base of the casing and having a fixed contact at one end, a movable contact that faces the fixed contact at one end and is movable to open and close with respect to the fixed conductor. a circuit breaker comprising: an arc extinguishing chamber for extinguishing an arc generated when the movable contact is separated from the fixed contact; and a partition wall provided on the cover and confining the arc in the arc extinguishing chamber. −

(2) The partition wall is provided on the cover in the vicinity of the grid of the arc extinguishing chamber so as to cut off the arc extinguishing chamber from the mechanical part that opens and closes the mover.
Circuit breaker as described in section.

(3) The circuit breaker according to claim 1 or 2, wherein the partition wall is formed integrally with the cover up to the base surface of the casing.