Patent ID: 7472402
Filing Date: 2008-12-30
Classification: G11B

Abstract:
1. A disk drive comprising: a chassis having a through hole; a rotating seat disposed below said chassis and adapted to hold and co-rotate with an optical disk; a clamper disposed above said chassis and capable of passing through said through hole in said chassis toward said rotating seat for cooperatively holding the optical disk; and first and second disk-positioning members mounted respectively on two opposite sides of said chassis, said first and second disk-positioning members having two straight inner portions extending perpendicularly and respectively from said opposite sides of said chassis and defining a first distance therebetween, two outer portions extending inclinedly and respectively from said inner straight portions in such a manner to define a second distance therebetween that is greater than said first distance, and two extension portions extending respectively from said inclined outer portions; wherein, said optical disk is positioned at a temporary position before being clamped by said clamper and is positioned at a reading and/or writing position after being clamped by said clamper; wherein, circumference of said optical disk faces said straight inner portions and is restricted by said straight inner portions when said optical disk is at said temporary position; wherein, circumference of said optical disk faces said inclined outer portions and is spaced apart from said inclined outer portions when said optical disk is at said reading and/or writing position; wherein, said first and second disk-positioning members are cylindrical-shaped, and have two large-diameter sections respectively defining said straight inner portions, two small-diameter sections respectively defining said extension portions, and two constricted sections between said large-diameter and-small-diameter sections and respectively defining said inclined outer portions.