JPH0163044U

JPH0163044U -

Info

Publication number: JPH0163044U
Application number: JP1987158996U
Authority: JP
Priority date: 1987-10-15
Filing date: 1987-10-15
Publication date: 1989-04-24

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例による回路しや断
器の部分断面側面図、第２図は外部接続端子と絶
縁隔壁との部分断面斜視図、第３図は本実施例に
おける絶縁スペーサの斜視図、第４図はこの考案
の他の実施例の主要部の分解斜視図、第５図は従
来の回路しや断器の部分断面側面図、第６図は第
５図のものにおける外部接続端子の分解斜視図、
第７図は第５図のものにおける外部接続端子と絶
縁隔壁の部分断面斜視図である。図において、２，３は開閉接触子、４は消弧装
置、Ａはアーク、６，６Ａは外部接続端子、６０
４は外部接続端子６の消弧装置に対向した側、６
０５，６０６は両側、６０８は頂部、７，７Ａは
外部導体、９は絶縁隔壁、９０１はその排気口、
１０はカバー、１０Ａはその絶縁隔壁９に対向し
た端壁、１０Ｄは頂部、１２は絶縁スペーサ、１
２１，１２２はその両脚部、１２３は架橋部であ
る。なお、各図中同一符号は同一部または相当部
を示す。 FIG. 1 is a partially sectional side view of a circuit breaker according to an embodiment of this invention, FIG. 2 is a partially sectional perspective view of an external connection terminal and an insulating partition, and FIG. 3 is a partially sectional side view of an insulating spacer in this embodiment. 4 is an exploded perspective view of the main parts of another embodiment of this invention, FIG. 5 is a partial cross-sectional side view of a conventional circuit breaker, and FIG. 6 is an external view of the one shown in FIG. Exploded perspective view of connection terminal,
FIG. 7 is a partially sectional perspective view of the external connection terminal and the insulating partition wall in the one shown in FIG. In the figure, 2 and 3 are switching contacts, 4 is an arc extinguisher, A is an arc, 6 and 6A are external connection terminals, and 60
4 is the side of the external connection terminal 6 facing the arc extinguishing device;
05, 606 are both sides, 608 is the top, 7, 7A are external conductors, 9 is an insulating partition, 901 is its exhaust port,
10 is a cover, 10A is an end wall facing the insulating partition wall 9, 10D is a top portion, 12 is an insulating spacer, 1
21 and 122 are its legs, and 123 is a bridge. Note that the same reference numerals in each figure indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

a pair of switching contacts, an arc extinguishing device disposed opposite to the switching contacts and extinguishing an arc generated between the switching contacts when the switching contacts are opened and closed, and the switching contact of the arc extinguishing device a box-shaped external connection terminal arranged on the side opposite to the switch and connected to one of the opening/closing contacts; a cover made of an insulating material and covering the side, both sides, and the top of the external connection terminal facing the arc extinguishing device; and an insulating partition having an arc gas exhaust port disposed between the end wall of the cover facing the arc extinguishing device and the arc extinguishing device, and after the arc gas passes through the exhaust port of the insulating partition, the cover In a circuit breaker configured to exhaust air to the outside through the periphery of the top, both legs opposite both edges of the end wall facing the insulating partition of the cover, and both legs opposite the bottom edge. A circuit breaker or circuit breaker, characterized in that a substantially U-shaped insulating spacer comprising bridge portions that connect to each other is provided between the end wall of the cover and the insulating partition wall.