Lock

The utility model relates to a lock technical field, concretely relates to lock. The utility model aims to provide a small, the theftproof performance is good, lock that can electronic control. Include: step motor, cam, spring, lock axle and fixed axle, the through -hole of cam with step motor's axle sleeve connects, the bottom side of cam with the first end fixed connection of spring, the secondof spring end be used for with the end of fixed of lock axle, the curling part of spring is used for the cover to establish at the fixed axle, the front end of lock axle be used for with the brake disc of vehicle, vehicle tap, vehicle after hub cap or vehicle after -poppet fixed, stepper motor drives the cam rotates, and the cam drives the spring swing, the spring drives the lock axle and stretches out or withdraw from the lockhole. Mechanical structure adopts spring and lock shaft fit, brings in the flexible of the removal that drives the lock axle, control lock axle through swing spring first, adopt step motor to co