JPS6384853U

JPS6384853U -

Info

Publication number: JPS6384853U
Application number: JP18057186U
Authority: JP
Priority date: 1986-11-25
Filing date: 1986-11-25
Publication date: 1988-06-03

Description

[Brief explanation of the drawing]

第１図は、本考案の一実施例を示す一部を破断
した側面図、第２図は、その要部分解斜視図、第
３図ａ，ｂ，ｃは磁束の流れ状態の説明図、第４
図はａ，ｂ，ｃ，ｄは、動作説明図である。１……固定接点、２……ハウジング、３……固
定接点板、５，６，７……可動接触子、８……可
動接点、９……接触子保持板、９ａ……基端部、
９ｂ……対向側片、９ｃ……先端部、９ｄ……先
端部端面、９ｆ……吸引部、１０……連動部材、
１１……開極ばね、１２……アマチヤ、１３……
反転ばね、１４……電路部、１５……補助ヨーク
、１５ａ……連結片、１５ｂ……対向片端部。 FIG. 1 is a partially cutaway side view showing an embodiment of the present invention, FIG. 2 is an exploded perspective view of the main part thereof, and FIGS. 3 a, b, and c are explanatory diagrams of the flow state of magnetic flux. Fourth
In the figures, a, b, c, and d are operation explanatory diagrams. DESCRIPTION OF SYMBOLS 1... Fixed contact, 2... Housing, 3... Fixed contact plate, 5, 6, 7... Movable contact, 8... Movable contact, 9... Contact holding plate, 9a... Base end part,
9b... Opposing side piece, 9c... Tip part, 9d... Tip end face, 9f... Suction part, 10... Interlocking member,
11... Opening spring, 12... Amateur, 13...
Reversing spring, 14... Electric circuit portion, 15... Auxiliary yoke, 15a... Connection piece, 15b... Opposing end.

Claims

[Scope of utility model registration request]

A movable contact having a fixed contact, a movable contact provided at a distal end thereof to make contact with and separate from the fixed contact, a base end of the movable contact being pivoted to the distal end so that the base end is a rotation fulcrum, and a distal end thereof. a contact holding plate made of a magnetic material, the end surface of which resiliently abuts on an interlocking member that responds to the on and off positions of the handle, the front surface of which is U-shaped, and the intermediate end surface of which serves as a suction section; an opening spring that elastically biases the contact holding plate; and a first opening spring that faces the suction part and has a base end swingably supported by the contact holding plate and is not attracted by the suction part. an armature that swings to a second position where it is attracted; and an armature that is suspended between the movable contact and the armature and the first
a reversing spring that biases the movable contact in the closing direction at the position and in the opening direction at the second position; and an electric circuit section inserted into the space formed by the contact holding plate and the armature. , in a circuit breaker in which the armature swings from a first position to a second position to open the movable contact when an excessive current flows through the electric circuit section, the armature has a U-shape, and the armature is in the first position. The movable contact is provided with an auxiliary yoke whose opposing end surface is closer to the armature than the suction section on the tip side of the armature when in position, and forms a magnetic path together with the armature due to the current flowing through the electric circuit section. circuit breaker.