JPS6441949U

JPS6441949U -

Info

Publication number: JPS6441949U
Application number: JP13767787U
Authority: JP
Priority date: 1987-09-09
Filing date: 1987-09-09
Publication date: 1989-03-13

Description

[Brief explanation of the drawing]

第１図ないし第６図はこの考案による回路遮断
器の開閉機構の一実施例を示す図で、第１図は縦
断面図、第２図は要部横断面図、第３図は遮断器
閉成時の要部拡大図、第４図は第３図の―線
に沿う断面図、第５図は遮断器過電流遮断時の要
部拡大図、第６図は第５図の―線に沿う断面
図、第７図は従来の回路遮断器の開閉機構の一例
を示す縦断面図である。３……可動接触子、６……ホルダ、１１……操
作ハンドル、１１ａ……リンク部、１２……リン
クピン、１３……開閉ばね、２０……過電流引外
し装置、２１……可動鉄片、３０……絶縁ケース
、３１……ストツパ、３２……ピン。 Figures 1 to 6 are diagrams showing an embodiment of the circuit breaker opening/closing mechanism according to this invention, in which Figure 1 is a longitudinal sectional view, Figure 2 is a cross sectional view of the main part, and Figure 3 is a circuit breaker opening/closing mechanism. Figure 4 is an enlarged view of the main parts when closed, Figure 4 is a sectional view taken along the - line in Figure 3, Figure 5 is an enlarged view of the main parts when the circuit breaker overcurrent is interrupted, and Figure 6 is the - line in Figure 5. FIG. 7 is a longitudinal sectional view showing an example of a conventional circuit breaker opening/closing mechanism. 3... Movable contact, 6... Holder, 11... Operating handle, 11a... Link portion, 12... Link pin, 13... Opening/closing spring, 20... Overcurrent tripping device, 21... Movable iron piece , 30... Insulating case, 31... Stopper, 32... Pin.

Claims

[Scope of utility model registration request]

One side leg piece is swingably connected to the link part of the operating handle which is pivoted to an insulating case that is divided into two vertically, and a U-shaped link pin is formed, and the middle part swings to the other side leg piece of this link pin. a holder which is freely coupled and has one end engaged with a movable iron piece of an overcurrent trip device and whose other end supports a movable contact; and one leg piece of the link pin that is stretched between the holder and the operating handle. In the opening/closing mechanism of a circuit breaker, the opening/closing mechanism of a circuit breaker is equipped with an opening/closing spring that reverses its action when the connection point of the link portion exceeds the link dead center, and a pin having both ends locked on each side of the insulating case, and a winding around the pin. a helical torsion spring whose free end is engageable with one leg of the link pin and whose other end is latched to the insulating case to restrict rotation of the operating handle during interruption due to overcurrent tripping; A circuit breaker opening/closing mechanism characterized by comprising a stopper according to the invention.