Operating mechanism of dual power supply changeover switch

The invention discloses an operating mechanism of a dual power supply changeover switch, and relates to the field of electrical equipment. The operating mechanism comprises a plastic shell, a PCB, a driving element, a transmission assembly, release pieces and a first handle gear and a second handle gear which are arranged on the two sides of the PCB. The driving element is connected with the transmission assembly in a linkage way. The transmission assembly comprises a first gear and a second gear which are respectively arranged on the two sides of the PCB. The circumferential surface of the first handle gear is provided with a section of gear teeth 1. The circumferential surface of the second handle gear is provided with a section of gear teeth 2. The first gear is also provided with gearteeth 3 which are adapted to the gear teeth 1. The second gear is provided with a section of gear teeth 4 which are adapted to the gear teeth 2. The gear teeth 3 and the gear teeth 4 are arranged in astaggered way. The second