Waterproof electric lock, car door lock device and elevator

The invention belongs to the technical field of elevator lock body equipment and provides a waterproof electric lock, a car door lock device and an elevator. The waterproof electric lock mainly comprises a lock body, a sliding shaft and a trigger part, wherein a mounting cavity is formed in the lock body, and the trigger part is arranged in the mounting cavity; the mounting cavity is provided with a first cavity opening, and the sliding shaft is arranged on the first cavity opening and can slide to be in abutting contact with the trigger part; a plurality of first contacts are arranged at one end, facing the sliding shaft, of the trigger part, and second contacts corresponding to the first contacts are arranged at one end, facing the trigger part, of the sliding shaft; and when an interval exists between the first contacts and the second contacts, one end of the sliding shaft extends out of the lock body to serve as a trigger tongue, and the extending length of the trigger tongue is not smaller than the inter