Opening and closing mechanism of circuit breaker

The invention relates to the technical field of circuit breakers, and discloses a circuit breaker opening and closing mechanism which comprises a circuit breaker shell, and an observation opening and a driving opening are formed in the front face of the circuit breaker shell. By pressing a pressing operation block, the pressing operation block drives a step convex body block and a movable concave block to slide on a sliding groove plate body, the movable concave block can press a pressure spring to contract due to extrusion thrust, so that a stop torsion spring rod on the movable concave block is in contact with an extension pin body arranged on a connecting plate; on the other hand, the gear is driven to rotate due to the state that a tooth groove in the step convex body block is meshed with the gear, so that the indicating block is driven to rotate anticlockwise under the action of the connecting shaft, and a positioning column on the indicating block does certain arc-shaped motion on the arc-shaped groove