Novel on/off transmission device for high-voltage electric apparatus

The utility model discloses a novel on/off transmission device for a high-voltage electric apparatus. The transmission device comprises a conductive rod and a switch driving mechanism for driving the conductive rod to move back and forth, wherein an insulation layer is coated on the outer circumferential wall of the conductive rod. The conductive rod coated with the solid insulation layer outside is disposed between outlet terminals at two sides; one end of the insulated conductive rod is directly connected with the moving contact of an on/off element and the other end of the insulated conductive rod is connected with the outlet terminals through a slide conductive assembly with a guide (a lead-connecting flexible connection may also be adopted); and an insulation main shaft and an insulation crank arm rotate and swing for driving the conductive rod to reciprocate so that use of redundant elements such as an insulation pull rod, a conductive clamp, a flexible connection and the like is prevented. Besides, a contact pressure spring is directly applied to the outer insulated conductive rod and the insulation portion may be directly applied to the outer portion of the conductive rod so that production cost is substantially reduced, an overall structure is compacted, simplified and miniaturized, and detachment and maintenance become more convenient.