JPH0259554U

JPH0259554U -

Info

Publication number: JPH0259554U
Application number: JP13934388U
Authority: JP
Priority date: 1988-10-26
Filing date: 1988-10-26
Publication date: 1990-05-01

Description

[Brief explanation of drawings]

第１図は本考案の実施例のラツチ片の要部斜視
図、第２図乃至第５図は同上の夫々他の実施例を
示す要部斜視図、第６図は従来例の回路遮断器の
分解斜視図、第７図は同上の要部分解斜視図、第
８図は同上の外観斜視図、第９図は同上の上面図
、第１０図は同上の側面図、第１１図は同上の縦
断面図、第１２図乃至第１４図は同上の構成及び
動作を示す要部断面図、第１５図は同上の動作説
明図、第１６図は同上の要部側面図、第１７図は
同上の動作説明図、第１８図は同上のラツチ片の
要部斜視図である。２はハンドル、４はトリツプリンク機構、５は
可動接触子、６はラツチ機構、７は可動接点、８
は固定接点、１０は異常検出機構、１１は付勢ば
ね、５２は係止バー、６１はラツチ片、６２は係
合溝、６６は凹部である。 Fig. 1 is a perspective view of a main part of a latch piece according to an embodiment of the present invention, Figs. 2 to 5 are perspective views of main parts showing other embodiments of the same, and Fig. 6 is a circuit breaker of a conventional example. 7 is an exploded perspective view of the same as above, FIG. 8 is an external perspective view of same as above, FIG. 9 is a top view of same as above, FIG. 10 is a side view of same as above, and FIG. 11 is same as above. 12 to 14 are cross-sectional views of the main parts showing the configuration and operation of the above, FIG. 15 is an explanatory view of the operation of the same, FIG. 16 is a side view of the main parts of the same, and FIG. 17 is a cross-sectional view of the main parts of the same. FIG. 18, which is an explanatory diagram of the same operation as above, is a perspective view of a main part of the latch piece shown above. 2 is a handle, 4 is a trip link mechanism, 5 is a movable contact, 6 is a latch mechanism, 7 is a movable contact, 8
10 is a fixed contact, 10 is an abnormality detection mechanism, 11 is a biasing spring, 52 is a locking bar, 61 is a latch piece, 62 is an engagement groove, and 66 is a recessed portion.

Claims

[Scope of utility model registration request]

The handle has one end that is pivoted and the other end that can be rotated, and the locking bar on one end engages with the engagement groove of the latch piece of the latch mechanism, and the center part is connected to the handle via a trip link mechanism. a movable contact having a movable contact facing the fixed contact at the tip thereof;
A biasing spring biases the movable contact in a predetermined direction, and an abnormality in the load current is detected, and the abnormality detection output drives the latch piece to remove the locking bar from the engagement groove and close both contacts. 1. A latch structure for a circuit breaker having an abnormality detection mechanism for opening and opening, characterized in that a recess is provided approximately in the center of a surface of the engaging groove of the latch piece that receives the locking bar.