Transmission device of automatic change-over switch

The invention relates to a transmission device of an automatic change-over switch, which comprises an input rotating disc, an energy storage torsion spring, a rotating disc and limiting blocks, the rotating disc is arranged at the center of a limiting seat to rotate, the energy storage torsion spring is arranged between the input rotating disc and the rotating disc, the limiting blocks are oppositely arranged in pairs, and the outer ends of the limiting blocks are hinged to the rotating disc. The inner end of the limiting block is connected with a limiting torsional spring arranged on the rotating disc and tilts outwards under the action of the limiting torsional spring, multiple sets of limiting grooves are formed in the inner wall of a rotating disc hole of the limiting base, the tilted part of the limiting block abuts against any set of limiting grooves, a limiting shaft is arranged at the position, not provided with a hinge shaft, of the limiting block, and the limiting shaft extends into the input rotati