Lock assembly and hard disk cartridge

The invention relates to the technical field of computer equipment, and provides a lock assembly and a hard disk cartridge. The lock assembly comprises a driving part, an elastic arm, a driven part and a locking part; one side of the driving part protrudes outwards to be provided with a bearing part of a tubular structure, a groove is formed in the side wall of the bearing part in the axial direction, the elastic arm is arranged in the groove, and a clamping part is arranged in the direction, facing the virtual center of the bearing part, of the elastic arm; the driven part and the driving part are separably arranged, and an abutting surface is arranged on the driven part; the locking piece is rotationally arranged in the bearing part, a spring bolt is arranged at one end of the locking piece, and separation of the driving piece and the driven piece can be limited through cooperation of the first side of the spring bolt and the abutting face; the other end of the locking piece is provided with a driving struc