公开(公告)号：US5530414A

公开(公告)日：1996-06-25

申请号：US305463

申请日：1994-09-12

申请人： Stanford W. G. Reynolds

发明人： Stanford W. G. Reynolds

IPC分类号： H01H3/26 ,  H01H71/52 ,  H01H83/12 ,  H01H67/02

CPC分类号： H01H71/527 ,  H01H3/264 ,  H01H83/12 ,  H01H2071/506

摘要： A switching accessory is provided for use with motor starters. In a first embodiment the accessory may be utilized as a motor starter by-pass. In another embodiment the accessory may be utilized as a motor starter isolator. The switching accessory utilizes lever action and fulcrum points to open and close contacts as desired. More particularly, the switching accessory includes a pull bar contactor arrangement, an actuator mechanism, a fulcrum shaft and an operator lever. The pull bar contactor arrangement may be axially displaceable between pairs of bus bars to permit electrical connections between the bus bars of each pair. The pull bar may be movable between a first position in which the contacts of the bus bars of each pair are isolated from one another and a second position in which the contacts of the bus bars of each pair are in electrical contact via contact elements on the pull bar. The actuator mechanism may be motor driven for linearly displacing an actuator member between predetermined limit positions. The fulcrum shaft is axially displaceable between two predetermined limit positions. The operating lever is pivotally connected to the pull bar, the actuator member of the actuator mechanism and the fulcrum shaft. The arrangement of the pull bar, the actuator mechanism, the fulcrum shaft and the operating lever may be such that, with predetermined biasing forces of biasing means acting on the fulcrum shaft and the pull bar, the operation of the actuator mechanism creates the desired electrical connection through a series of movements of the components of the accessory.

摘要翻译： 提供了一种与电机启动器一起使用的开关配件。 在第一实施例中，附件可以用作电动机起动器旁路。 在另一个实施例中，附件可以用作电动机起动隔离器。 切换附件利用杠杆作用和支点来根据需要打开和关闭触点。 更具体地，切换附件包括拉杆接触器装置，致动器机构，支点轴和操作杆。 拉杆接触器装置可以在成对的汇流条之间轴向移动以允许每对汇流条之间的电连接。 拉杆可以在第一位置和第二位置之间移动，在第一位置，每对的母线的触点彼此隔离;第二位置，每对的母线的触点通过接触元件电接触， 拉杆。 致动器机构可以是马达驱动的，用于使致动器构件在预定极限位置之间线性移位。 支轴在两个预定极限位置之间轴向移动。 操作杆可枢转地连接到拉杆，致动器机构的致动器构件和支点轴。 拉杆，致动器机构，支点轴和操作杆的布置可以是这样的，即，借助作用在支轴和拉杆上的偏压装置的预定偏置力，致动器机构的操作产生所需的电 通过附件组件的一系列移动连接。