Disk drive device

A disk drive unit comprising:

• a case;
• a motor arranged in the case;
• a plurality of disks which are individually supported and rotated by the motor;
• a head which processes information for the disks;
• a carriage assembly which is arranged in the case and supports the head for movement with respect to the disks;
• and
• a stabilizing plate located between the plurality of disks and opposed to surfaces of the disks across gaps,
• the stabilizing plate including an arcuate first stabilizing portion which has a first peripheral edge extending along respective outer peripheral edges of the disks and a second peripheral edge opposed to the first peripheral edge across a gap and which is opposed to the whole respective outer peripheral edge portions of the disks except a movement region for the carriage assembly;
• and a second stabilizing portion, which radially extends from one end portion of the first stabilizing portion toward respective central parts of the disks and is opposed to the movement region for the carriage assembly.