Patent ID: 7189933

Claim:
A solid insulated disconnection switch comprising: a base frame made of an insulating solid material which is tunneled in one direction and has inside an external connection outlet to which outside electrical equipment is electrically connected; a driving assembly generating rotating power; a shaft made of the insulating solid material, of which an outside surface has a screw thread and which is rotated by the rotating power generated by the driving assembly; a stator having a fixed contact point which is electrically connected to a main bus and is surrounded by the insulating solid material,; a mover which is electrically connected to the external connection outlet of the base frame through the screw-thread engagement of the mover with the shaft and moves back and forth in a straight line between the fixed contact point of the stator and a position which is separately disconnected from the fixed contact point of the stator by rotating the shaft; a spacer made of the insulating solid material, which is provided between the base frame and the stator to electrically insulate the base frame from the stator and has an empty space inside to allow the mover to pass through; and a power transfer assembly which is provided between the driving assembly and the shaft to transfer the rotating power generated from the driving assembly to the shaft and electrically insulate the driving assembly from the shaft.