Mechanical lock cylinder and key thereof

• Main Authors: ZHANG YINBAO, ZHANG MINGXING
• Format: Patent
• Language: Chinese; English
• Published: 28.03.2023
• Subjects: ACCESSORIES THEREFOR; FIXED CONSTRUCTIONS; HANDCUFFS; KEYS; LOCKS; SAFES; WINDOW OR DOOR FITTINGS

The invention provides a mechanical lock cylinder which comprises a lock bolt and a lock sleeve, the lock sleeve is provided with a cavity which is matched with the lock bolt and is through in the front-back direction, the lock bolt is installed in the cavity, can rotate and is limited and locked through a locking structure, the locking structure is formed by arranging a plurality of sets of locking units composed of first springs, marbles A and marbles B, and the marbles B are different in length. The lock bolt is divided into a first locking part and a second locking part, a key hole formed by communicating a first inner cavity and a second inner cavity is machined in the end face in the rotating shaft direction, the first inner cavity is located in the first locking part, the second inner cavity is located in the second locking part, and the two locking structures are arranged in the key hole in an included angle mode. The marble B is pushed into the key hole by the spring and the marble A and is blocked a