公开(公告)号：US3740506A

公开(公告)日：1973-06-19

申请号：US3740506D

申请日：1972-06-20

Applicant: HITACHI LTD

Inventor： KASHIMURA K ,  YOSHIOKA Y ,  HIRASAWA K

IPC: H01H33/30 ,  H01H35/38

CPC classification number: H01H33/30

Abstract: A circuit breaker having an actuating system comprising a signal responsive valve member of large diameter and a making force imparting valve member of small diameter connected to each other by an actuating rod so that a first differential force relationship can be established therebetween. A movable valve seat of diameter smaller than that of the making force imparting valve member is movable toward and away from the signal responsive valve member so that a second differential force relationship can be established between the two valve members when the movable valve seat engages the signal responsive valve member to limit the effective area of the latter. The movable valve seat is moved toward and away from the signal responsive valve member and fluid under pressure applied to the signal responsive valve member is suitably controlled so as to selectively bias the actuating rod in one of the making and breaking directions. A control valve member is disposed in proximity to the movable valve seat so that it moves in response to the movement of the actuating rod in the breaking direction for controlling the application of the fluid pressure to the signal responsive valve member. This control valve member acts to reduce the moving distance of the movable valve seat following the movement of the signal responsive valve member so that the movable valve seat can take a floating position ready to move in the making direction.

Abstract translation: 一种具有致动系统的断路器，其包括大直径的信号响应阀构件和通过致动杆彼此连接的小直径的施力赋予阀构件，从而可以在它们之间建立第一差分力关系。 直径小于制动力阀构件的可移动阀座可以朝向和远离信号响应阀构件移动，使得当可动阀座接合信号时可以在两个阀构件之间建立第二差速力关系 响应阀构件来限制后者的有效面积。 可移动阀座朝向和远离信号响应阀构件移动，并且适当地控制施加到信号响应阀构件的压力下的流体，以便在制动和断开方向之一上选择性地偏压致动杆。 控制阀构件设置在可动阀座附近，使得其响应于致动杆在断开方向上的移动而移动，以控制对信号响应阀构件施加流体压力。 该控制阀构件用于减小可动阀座在信号响应阀构件的移动之后的移动距离，使得可动阀座能够准备好沿着制造方向移动的浮动位置。