Patent ID: 8493728
Filing Date: 2013-07-23
Classification: G06F,G11B

Abstract:
1. The disk unit, comprising: a hard disk drive including a drive mechanism for rotatably driving one or more disk mediums, an arm disposed movably within a rotation area of the disk medium, and an actuator for performing control of positioning a magnetic head fixed to the arm to a target position of the disk medium; a chassis for su porting the hard disk drive; and a dynamic absorber disposed in the hard disk drive or the chassis, wherein the dynamic absorber absorbs rotation direction vibration acting on the hard disk drive with a part of the hard disk drive as the rotation center, wherein the dynamic absorber comprises a coupling member for coupling a weight and an elastic member, and a rotation axis which is disposed between the weight and the elastic member and fixed to the chassis, and which rotatably supports the coupling member, wherein the weight is fixed to the coupling member, one end of the axial direction of the elastic member is fixed to the coupling member, the other end of the axial direction is fixed to the chassis, load by the weight is added to one end of the coupling member, and elastic force by the elastic member is applied to the other end of the coupling member, and wherein, when the hard disk drive rotates with a part of the hard disk drive as the rotation center and the weight rotates around the rotation axis pursuant to the rotation direction vibration of the hard disk drive, the elastic member applies elastic force to the coupling member in a direction of inhibiting the rotational motion of the weight.