Patent ID: 7856641

Claim:
A disk drive device, comprising: a device main body having a front surface side, a rear surface side, a first lateral side, and a second lateral side, the device main body including a disk slot for inserting and removing a disk-like recording medium provided on the front surface side thereof; a disk holding unit that is provided in the device main body and rotatably holds the disk-like recording medium in a direction orthogonal to an inserting and removing direction of the disk-like recording medium; a main chassis that is fixedly arranged in the device main body and supports the disk holding unit and a base unit provided with an optical pickup for recording an information signal in and/or reproducing the information signal from the disk-like recording medium; an arm unit rotatably supported on the first or second lateral sides of the device main body in a plane parallel to the disk-like recording medium held by the disk holding unit; an urging arm that is provided at a tip of the arm unit, has a support section that supports a side of the disk-like recording medium when the disk-like recording medium is inserted, and urges the disk-like recording medium; a first centering member that is provided on the first lateral side of the device main body and supports the side of the disk-like recording medium when the disk-like recording medium is inserted; and a second centering member that is provided on the second lateral side of the device main body in the plane parallel to the disk-like recording medium held by the disk holding unit and supports the side of the disk-like recording medium, wherein the first centering member and the second centering member are regulated in positions with respect to the main chassis to support the side of the disk-like recording medium during an insertion of the disk, the first centering member and the second centering member support the disk-like recording medium in a centering position at three points around the disk holding unit in conjunction with the urging arm, and of the urging arm and the first and second centering members, only the urging arm urges the disk-like recording medium during the insertion of the disk.