Patent ID: 7406700

Claim:
A disk player in which a synthetic resin-made drive chassis is disposed in a housing in such a manner as to be vertically movable, a deck is integrally formed on a front side of the drive chassis, an accommodating recess is formed in the drive chassis rearwardly of the deck, one side edge of the accommodating recess is formed as a guide rail extending from a rear end portion of the drive chassis toward the deck in backward and forward directions, both ends of a guide shaft disposed on another side edge side of the accommodating recess in parallel with the guide rail are fixed to the rear end portion of the drive chassis and the deck, an optical pick up including a synthetic resin-made base and a lens holder with an objective lens which is movable in a focusing direction and a tracking direction by fitting to a supporting shaft provided uprightly on the base is disposed in the accommodating recess, a pair of outwardly expanding and inclined inner side surfaces of an annular guide groove, which is formed in an outer peripheral surface of a guide roller pivotally secured to one end portion of the base, are engaged with the guide rail, the guide shaft is fitted in a bearing hole of a bearing portion integrally provided projectingly on another end portion of the base, a recessed groove communicating with the accommodating recess is formed in the deck, a spindle motor is fixed in the recessed groove, a turntable for mounting a disk is secured to a rotating shaft of the spindle motor, as the drive chassis is moved upward, a disk is mounted on the turntable, the disk is rotated at high speed by the spindle motor, the optical pick up is reciprocatingly moved along the guide rail and the guide shaft, the lens holder is moved in the focusing direction and the tracking direction, laser light is projected onto the disk through the objective lens so as to read information recorded on the disk, a first vibration damping hole is provided penetratingly in the deck substantially between the recessed groove and the guide rail and a second vibration damping hole is provided penetratingly in the deck substantially between the recessed groove and the guide shaft, the first vibration damping hole has the same width as the guide rail and is formed in such a manner as to extend from a front end of the guide rail in the forward direction, the second vibration damping hole is formed with substantially the same width as the first vibration damping hole and is formed in such a manner as to extend from a vicinity of a front end of the guide shaft in the forward direction, and a reinforcing girder traverses a substantially central portion of the second vibration damping hole and is formed integrally with the deck.