Novel lock cylinder fixing structure

The utility model discloses a novel lock cylinder fixing structure and relates to the field of lock cylinders. The anti-theft lock comprises a lock cylinder, a lock cylinder sleeve, a key, a fixed separation blade, an inner marble and a fixed separation blade rear seat, a fixed separation blade is arranged at one end of the lock cylinder; wherein one end of the lock cylinder is provided with a fixed separation blade, the other end of the lock cylinder is provided with an inner marble, a key is inserted between the inner marble and the fixed separation blade, the key is matched and connected with the lock cylinder, the lock cylinder is sleeved with a lock cylinder sleeve, and a fixed separation blade rear seat is installed on the side, away from the fixed separation blade, of the lock cylinder sleeve, combined and connected with one end of the lock cylinder sleeve. The utility model has the beneficial effects that the backseat of the separation blade is effectively widened, after a keyis inserted, the key can