Spring bolt safety structure of single-bolt lock body

The utility model discloses a spring bolt safety structure of a single-bolt lock body, which comprises a lock shell, a spring bolt arranged in the lock shell and a rotary driving component matched with the spring bolt, and is characterized in that one end part of the spring bolt is arranged in a lock hole of the lock shell, and the other end part of the spring bolt is provided with a lock rod; the rotary driving assembly can push the lock rod to drive the lock tongue to move in the lock hole. The safety lock block is arranged on one side of the lock rod, the lock cylinder can push the safety lock block to move so that the safety lock block can be located at the safety position and the unlocking position, and when the safety lock block is located at the safety position, the safety lock block can prevent the lock rod from moving backwards to drive the spring bolt to retract into the lock hole, so that the spring bolt is in the safety state and cannot be unlocked. When the safety lock block is located at the unl