| 摘要 |
The switch arrangement (1) has two fused switch units (10), and a lever transmission mechanism (100) comprising three transmission levers. An end of transmission lever (120) is pivotally connected to housing (80) and to shift rail transmission lever (140). A shift-transmission lever (160) is hinged to an end of shift lever (40). The opposite ends of levers are hinged together so that during movement of shift lever to open position, force is exerted on shift rod (60) so that the rod moves in longitudinal direction relative to housing, into disconnecting position, against spring force. The multi-pole switch arrangement has two fused switch units for receiving a fuse (20), a contact device for bus-bars (90), a housing, a switching device for closing and interrupting the circuit of all switch units, a shift lever which is switched to and fro between closing and open positions, and a shift rod which is switched to and fro between contact and disconnecting positions. The switch rod with a spring device (70) is biased towards its disconnecting position, between the housing and the switch rod. The shift lever is connected via a lever transmission mechanism to the shift rod. The lever transmission mechanism comprises three transmission levers. An end of a transmission lever is pivotally connected to the housing and is connected to a shift rail transmission lever which is connected at its one end articulated to the shift rod. A shift-transmission lever is hinged to an end of shift lever. The respective opposite ends of each of the transmission levers are hinged together, so that during movement of the shift lever from its off position to its open position via the transmission mechanism, a force is exerted on the rod so that the rod moves in longitudinal direction relative to the housing, from its contact position into its disconnecting position, against the spring force of spring device. |
