JPS6248743U

JPS6248743U -

Info

Publication number: JPS6248743U
Application number: JP13721385U
Authority: JP
Priority date: 1985-09-06
Filing date: 1985-09-06
Publication date: 1987-03-26
Anticipated expiration: 2000-09-06
Also published as: JPH0641328Y2

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例による回路遮断器
の操作機構部を示す分解斜視図、第２図は従来の
回路遮断器の開路状態を示す側面断面図、第３図
は第２図の操作機構部の分解斜視図、第４図は第
２図の遮断器の閉路状態を示す側面断面図、第５
図は第４図の状態からトリツプ瞬間状態になつた
遮断器を示す側面断面図である。１……ベース、２……操作ハンドル、５……可
動子、５ａ，５ｂ……ラツチ面、６……支持軸、
７……係止レバー、７ａ……係止部、１２……可
動接点、１６……固定接点、４１……リンク、４
１ａ……板片部、４３……係合ピン、４４……係
合ローラ、２０１……内方突起部。なお、図中同
一符号は同一又は相当部分を示す。 FIG. 1 is an exploded perspective view showing the operating mechanism of a circuit breaker according to an embodiment of the invention, FIG. 2 is a side sectional view showing a conventional circuit breaker in an open state, and FIG. FIG. 4 is an exploded perspective view of the operating mechanism; FIG. 4 is a side cross-sectional view showing the circuit breaker in FIG. 2 in a closed state;
This figure is a side sectional view showing the circuit breaker changed from the state shown in FIG. 4 to the instantaneous trip state. 1... Base, 2... Operating handle, 5... Mover, 5a, 5b... Latch surface, 6... Support shaft,
7... Locking lever, 7a... Locking portion, 12... Movable contact, 16... Fixed contact, 41... Link, 4
1a...Plate piece portion, 43...Engagement pin, 44...Engagement roller, 201...Inward protrusion. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

an operating handle rotatably supported within a base forming a container and provided with an inward protrusion;
The two plate pieces are bent into a U-shape and opposite sides thereof are formed into plate pieces, and one end of both plate pieces pinches the protrusion of the operating handle from both sides and is rotatably connected to the operating handle. a link that forms a toggle link mechanism with the above-mentioned link; an engaging pin that is passed through the other ends of both plate pieces of this link, is supported rotatably, and has both ends protruding; and an engagement pin between the other ends of both plate pieces An engagement roller is inserted and rotatably supported by the engagement pin, and is rotatably supported by a support shaft supported by the base, with one rotating end having both ends of the engagement pin. Both latch surfaces corresponding to and abutting the part are provided,
A movable contact is fixed to the other rotating end and faces the fixed contact, and a movable element is biased to rotate in the direction in which the movable contact opens and opens, and this movable element is rotated via the support shaft. The locking lever is supported freely, has an engaging portion that engages with the engaging roller at one rotating end, and is always biased to rotate in a direction opposite to the biasing direction of the movable element. , normally, the engagement pin is in contact with both latch surfaces of the movable element, and the engagement roller is engaged with the locking portion of the locking lever, so that the other end of the link is locked. When the above-mentioned contacts are opened and contacted by rotating the operation handle and an overcurrent exceeding a predetermined value flows, the above-mentioned locking lever is pushed in the opposite direction to the biasing direction by the overcurrent tripping means. A circuit breaker characterized in that the circuit breaker is rotated to release the locking of the movable element by the engagement pin of the link and to open both the contacts.