Improved luggage box coded lock

The utility model relates to an improved luggage case coded lock which comprises an upper cover and a base, a lock cavity is arranged between the upper cover and the base, a lock cylinder mechanism, a code wheel assembly and a code changing mechanism are arranged in the lock cavity, the code wheel assembly comprises a lock bolt, an unlocking shaft sleeve and a code wheel, and the improved luggage case coded lock is characterized in that the code changing mechanism comprises a code changing key and a code changing block, a lock bolt matching shaft hole is formed in the middle of the code changing block, a code changing linkage hole is formed in the upper cover, the code changing key is provided with a first inclined face, the code changing block is provided with a second inclined face, the lock bolt is provided with a third inclined face, the upper cover is provided with a guide protruding column, and cylindrical grooves are formed in the two sides of the code changing key. The improved luggage box coded lock