Linkage unlocking mechanism and double-layer armrest box of automobile auxiliary instrument

The utility model relates to the technical field of automobile parts. The utility model relates to an armrest box, in particular to a linkage unlocking mechanism and a double-layer armrest box of an automobile auxiliary instrument. The lock comprises a base, a first shifting piece, a second shifting piece, a first spring bolt and a second spring bolt, the first shifting piece and the second shifting piece are respectively hinged to the base; a boss is arranged on the first shifting piece; a groove matched with the boss is formed in the second shifting piece; the first spring bolt and the second spring bolt are hinged to the base. The first spring bolt and the second spring bolt are connected with the base through springs respectively, the free end of the first shifting piece presses the first spring bolt, and the free end of the second shifting piece presses the second spring bolt, so that the armrest box of the automobile can achieve double-layer unlocking only through one unlocking mechanism, and the unlock