JPH0337739U

JPH0337739U -

Info

Publication number: JPH0337739U
Application number: JP9897589U
Authority: JP
Priority date: 1989-08-24
Filing date: 1989-08-24
Publication date: 1991-04-11

Description

[Brief explanation of drawings]

第１図はこの考案の第１の実施例の側面図、第
２図Ａは第１図における上リンクの側面図、第２
図Ｂはその正面図、第３図は第１図における上部
ユニツトの側面図、第４図は第１図におけるホル
ダユニツトの側面図、第５図この考案の第２の実
施例の側面図、第６図Ａは第５図における上リン
クの平面図、第６図Ｂはその側面図、第６図Ｃは
その正面図、第７図は従来例を説明するための回
路遮断器の中央極部分の縦断面図である。３……ホルダ、６……可動接触子、８……ラツ
チ、１１……トグルリンク、１５……下リンク、
１８……開閉スプリング、２１……上リンク、２
１ａ……側板、２４……フツク部、２８……上リ
ンク、２８ａ……側板、２８ｂ……Ｕ曲部、２９
……フツク部。 Figure 1 is a side view of the first embodiment of this invention, Figure 2A is a side view of the upper link in Figure 1, and Figure 2A is a side view of the upper link in Figure 1;
Figure B is a front view thereof, Figure 3 is a side view of the upper unit in Figure 1, Figure 4 is a side view of the holder unit in Figure 1, Figure 5 is a side view of the second embodiment of this invention, 6A is a plan view of the upper link in FIG. 5, FIG. 6B is a side view thereof, FIG. 6C is a front view thereof, and FIG. 7 is a center pole of a circuit breaker for explaining a conventional example. FIG. 3... Holder, 6... Movable contact, 8... Latch, 11... Toggle link, 15... Lower link,
18...Opening/closing spring, 21...Upper link, 2
1a...Side plate, 24...Hook part, 28...Top link, 28a...Side plate, 28b...U curved part, 29
...Futsuku Department.

Claims

[Claims for Utility Model Registration] 1. A circuit breaker in which a toggle link consisting of an upper link coupled to a latch and a lower link coupled to a holder of a movable contact is reversed by an opening/closing spring to open/close the movable contact. In the opening/closing mechanism, a hook part made of a pipe is fixed between the left and right side plates of the upper link so as to surround the hole into which the pin connecting the upper link and the lower link is inserted, and an opening/closing spring is hung on this hook part. A circuit breaker opening/closing mechanism characterized by: 2. In a circuit breaker opening/closing mechanism in which a toggle link consisting of an upper link coupled to a latch and a lower link coupled to a holder of a movable contact is reversed by an opening/closing spring to open/close the movable contact, the upper link An opening/closing mechanism for a circuit breaker, characterized in that a U-curved portion for integrally connecting left and right side plates is provided at a connecting end with a lower link, and a hook portion for hanging an opening/closing spring is formed on this U-curved portion.