Coded lock

The utility model relates to the technical field of coded locks, in particular to a coded lock which comprises a number wheel assembly, a lock cylinder, a number wheel shell, a lock shell, a spring bolt and a fastener, the number wheel assembly and the lock cylinder are both fixedly installed in the number wheel shell, the number wheel shell is installed in the lock shell in a sliding mode, and aclamping mechanism used for limiting movement of the number wheel shell is arranged between the number wheel shell and the lock shell. The character wheel shell is connected with the spring bolt, andthe fastener is provided with a clamping hole for the spring bolt to be inserted in. Compared with the prior art, a traditional pushing mode is changed into a character wheel shell used for installingthe lock cylinder and the number wheel assembly, the whole number wheel assembly and the lock cylinder are pushed to separate the spring bolt from the fastener, the space occupied by a pushing installation position is reduced,