Patent ID: 7136259

Claim:
A flexible disk drive for driving a flexible disk that is insertable and removable in a predetermined direction in the flexible disk drive, wherein the flexible disk includes a case body which has a first positioning hole elongated in a direction orthogonal to the predetermined direction and a second positioning hole that is substantially circular, said flexible disk drive comprising: a main frame; a lower cover for covering a lower surface of the main frame; and an eject plate that is slidable with respect to the main frame, wherein the main frame comprises first and second projections adapted to be fitted to the first and the second positioning holes, respectively, and each of the first and the second projections is formed by a plate piece extending upright from a bottom plate of the main frame; wherein the plate piece forming the first projection is formed in a plane extending along the predetermined direction, and the plate piece forming the second projection is formed in a plane at substantially a right angle to the predetermined direction; wherein the plate piece forming the first projection comprises a head portion that is adapted to be fitted into the first positioning hole so as to position the flexible disk along the predetermined direction; and wherein the plate piece forming the second projection comprises a head portion that is adapted to be fitted into the second positioning hole so as to position the flexible disk in the predetermined direction and the direction orthogonal to the predetermined direction.