US Patent 7401344 Recording medium driving device

A recording/reproducing mechanism 3 includes a pickup mechanism irradiating light on a disc recording medium 4, a pickup feed mechanism moving the pickup mechanism, and a flat cover 33 having an opening 33A cut along a feeding direction of the pickup mechanism. The flat cover 33 is supported elastically in a direction toward and away from the tray 2. The tray 2 has a recessed portion allowing the flat cover 33 to move in the direction toward and away from the tray 2. A protrusion 5 is provided on the recessed portion to restrict deformation of the flat cover 33 and prevents the flat cover 33 from contacting to the disc recording medium upon dropping impact. Therefore, even if the edge of the opening 33A of the flat cover 33 is turned up due to the impact when the driver housing the disc recording medium 4 therein is dropped, the edge contacts to the protrusion 5.