Abstract: This disk device includes a rotating portion holding and rotating a disk and a cover member provided to cover a surface of the disk, while the cover member includes a protrusion protruding from a lower surface of the cover member toward the disk, and the protrusion has a substantially sectorial shape including a pair of side portions broadening from a portion closer to a rotation center axis of the rotating portion toward a radial outer side and an outer periphery in plan view.

Abstract: In this disk unit, a tray has an air intake opening formed to extend from an upstream side in a rotational direction of a disk rotated by a rotating portion toward an optical pickup and to extend inward from outside a receiving region from the upstream side toward a downstream side in the rotational direction for incorporating air into the side a receiving surface of the tray from the side of the back surface thereof.

Abstract: The position of an optical pickup with respect to a disk is maintained accurately by preventing the free end portion of a cantilever movable member from being displaced lower than its proper position during the rotation of the disk even if the movable member is heavy to have improved vibration characteristics. There are provided a movable member 4, a chassis 1, a clamp mechanism 3, and a cam mechanism 5. The cam mechanism 5 includes a shift lever 51 connected to the free end portion of the movable member 4 via elastic bodies 42 and a cam main body 55. Positioning means 8 is composed of a protrusion 53 on the shift lever 51, a stepped engaging surface 15 for supporting the protrusion 53 thereon, and a guide mechanism 71. There is also provided anti-positioning means 9 for disengaging the protrusion 53 from the engaging surface 15.

Abstract: There is provided a disk loading apparatus capable of improving the stability in the centering operation at low cost only by changing the shape of the guide groove without adding extra parts or complicated structures. The disk loading apparatus includes a feed roller 2, a disk arm 4 adapted to move back and forth between an initial position where a disk 100 that is drawn by the feed roller 2 is received and a retracted position that corresponds to a chucking position for the disk, and a guide groove 5. The feed roller 2 has a function of centering the disk 100. The guide groove 5 includes slant wall surfaces 57 with the groove width therebetween decreasing progressively in the retracting direction of the disk arm 4, and receiving surfaces 58 for limiting the tilt angle of the disk arm 4.

Abstract: There are provided a disc tray, a traverse unit, and a main chassis unit. The main chassis unit has a main chassis, which has, as observed when the traverse unit is in a stand-by position, a latch portion that engages with a projection portion of a sub rack and a stopper member that restricts the movement of the cam slider. The stopper member has a rotary shaft in the shape of a circular column, a lever portion which the projection portion makes contact, and a lock portion that makes contact with the cam slider and thereby restricts the sliding movement of the cam slider.

Abstract: A disk drive in which a turntable-equipped spindle motor is provided at the front part of a metal plate-made chassis, an optical pick-up is arranged in a central aperture of the chassis, ends of the both right and left pairs of guide shafts or movably supporting the optical pick-up are engaged with the four supporting members on the chassis, the torsion coil spring is engaged between the ends of each of the guide shafts and the chassis, the front end of a height adjusting screw fixed together with the thread groove of the chassis against each of the torsion coil springs is pressed to the ends of each of the guide shafts and a part left after cutting during press-molding the chassis is pulled up and folded appropriately, thereby integrally molding four supporting members on the chassis.

Abstract: The position of an optical pickup with respect to a disk is maintained accurately by preventing the free end portion of a cantilever movable member from being displaced lower than its proper position during the rotation of the disk even if the movable member is heavy to have improved vibration characteristics. There are provided a movable member 4, a chassis 1, a clamp mechanism 3, and a cam mechanism 5. The cam mechanism 5 includes a shift lever 51 connected to the free end portion of the movable member 4 via elastic bodies 42 and a cam main body 55. Positioning means 8 is composed of a protrusion 53 on the shift lever 51, a stepped engaging surface 15 for supporting the protrusion 53 thereon, and a guide mechanism 71. There is also provided anti-positioning means 9 for disengaging the protrusion 53 from the engaging surface 15.

Abstract: There is provided a disk loading apparatus capable of improving the stability in the centering operation at low cost only by changing the shape of the guide groove without adding extra parts or complicated structures. The disk loading apparatus includes a feed roller 2, a disk arm 4 adapted to move back and forth between an initial position where a disk 100 that is drawn by the feed roller 2 is received and a retracted position that corresponds to a chucking position for the disk, and a guide groove 5. The feed roller 2 has a function of centering the disk 100. The guide groove 5 includes slant wall surfaces 57 with the groove width therebetween decreasing progressively in the retracting direction of the disk arm 4, and receiving surfaces 58 for limiting the tilt angle of the disk arm 4.

Abstract: There are provided a disc tray, a traverse unit, and a main chassis unit. The main chassis unit has a main chassis, which has, as observed when the traverse unit is in a stand-by position, a latch portion that engages with a projection portion of a sub rack and a stopper member that restricts the movement of the cam slider. The stopper member has a rotary shaft in the shape of a circular column, a lever portion which the projection portion makes contact, and a lock portion that makes contact with the cam slider and thereby restricts the sliding movement of the cam slider.

Abstract: An optical disc drive apparatus includes a frame having a sidewall, and a disc tray supported by the frame. The frame has a supporting portion including a guide rib formed protruding from an inner wall surface of the sidewall and a plurality of guide protrusions formed protruding upward from the guide rib. The disc tray has a supported portion implemented by a guide groove slidably engaging to the plurality of guide protrusions. A guide protrusion positioned at the forefront among the plurality of guide protrusions is structured so as to come in surface-contact with a wall surface implementing the guide groove. With such a structure, an optical disc drive apparatus unlikely to be broken even if a force in a transversal direction is applied to the disc tray while the disc tray is at a disc-removable position can be obtained.

Abstract: A disk drive in which a turntable-equipped spindle motor is provided at the front part of a metal plate-made chassis, an optical pick-up is arranged in a central aperture of the chassis, ends of the both right and left pairs of guide shafts or movably supporting the optical pick-up are engaged with the four supporting members on the chassis, the torsion coil spring is engaged between the ends of each of the guide shafts and the chassis, the front end of a height adjusting screw fixed together with the thread groove of the chassis against each of the torsion coil springs 18 is pressed to the ends of each of the guide shafts and a part left after cutting during press-molding the chassis is pulled up and folded appropriately, thereby integrally molding four supporting members on the chassis.

Abstract: An optical disc drive apparatus includes a frame having a sidewall, and a disc tray supported by the frame. The frame has a supporting portion including a guide rib formed protruding from an inner wall surface of the sidewall and a plurality of guide protrusions formed protruding upward from the guide rib. The disc tray has a supported portion implemented by a guide groove slidably engaging to the plurality of guide protrusions. A guide protrusion positioned at the forefront among the plurality of guide protrusions is structured so as to come in surface-contact with a wall surface implementing the guide groove. With such a structure, an optical disc drive apparatus unlikely to be broken even if a force in a transversal direction is applied to the disc tray while the disc tray is at a disc-removable position can be obtained.