Patent ID: 7207050

Claim:
A disk drive comprising a drive body including a traverse unit, a rack loading device arranged in a position opposed to a front end side of the traverse unit so as to be able to slide in left and right directions perpendicular to a disk conveyance track, and a tray capable of moving into and out of the drive body, wherein said drive body further includes on a back surface side of the tray: a rack extending longitudinally to mesh with a pinion gear; a gear escape-preventing wall extending in parallel to the rack so that the pinion gear is movable between the rack and the gear escape-preventing wall; a cam wall extending in parallel to the gear escape-preventing wall with a predetermined spacing therebetween, the cam wall having an inclined portion connected to the gear escape-preventing wall at a rear side thereof; a guide groove defined in part by and extending along a rear end portion of the gear escape-preventing wall and the inclined portion of the cam wall; a transverse guide wall provided on a front side of the tray and extending in perpendicular to the disk conveyance track, the transverse guide wall being connected to said cam wall via a corner wall; and a transverse guide groove defined in part by and extending along said corner wall and said transverse guide wall, the transverse guide wall also being connected to said gear escape-preventing wall via a corner escape-preventing wall, wherein the rack loading device is provided with a first boss and a second boss protruding therefrom so that the cam wall and the gear escape-preventing wall are interposed between the first and second bosses.