Centrifugal switch

The utility model provides a centrifugal switch. The centrifugal switch comprises a cover plate and is characterized in that the cover plate is fixedly provided with a lock box, the lock box and the cover plate form an accommodating cavity with one end being open, the accommodating cavity is internally provided with a plurality of locking springs, one ends of the locking springs are fixedly connected to the cover plate, the other ends of the locking springs are fixedly connected to a locking plate, the locking plate is connected with the inner wall of the lock box in a sliding manner, and the locking plate can extend out through the open end of the accommodating cavity. The centrifugal switch provided by the utility model is fixedly installed on a sliding base and used for locking a retaining frame at a stopped state, the centrifugal switch contracts under the action of a centrifugal force when a motor is started and the rotating speed reaches a certain value, and a normal operating state is realized. The centrifugal switch provided by the utility model avoids a circumstance that a torque limiter breaks away abnormally because the starting torque of the motor is too large, thereby ensuring normal and stable operations of equipment, and being simple in structure and wide in applicability.