Abstract: A optical pickup system for use in a disk drive includes a stepping motor, a lead screw supported by a bracket and coupled to the stepping motor, in which the lead screw has spiral grooves formed on an outer periphery of the lead screw and engaged to a slider to move an optical pickup head in a radial direction of a disk, a plurality of guide shafts, installed to a main base in parallel with the lead screw, for guiding the optical pickup head in the radial direction of the disk, and a positioning mechanism for supporting the bracket which is installed to the main base to move in any direction to automatically maintain a position of the lead screw to the slider, thereby minimizing a load applied to the stepping motor.

Abstract: An optical pickup transferring apparatus including a slider having a base, a floating portion elastically coupled to the base, the floating portion having on one side thereof at least one protuberance inserted into the external thread of a lead screw, and an elastic element located on the top of the base and the floating portion. The elastic element includes a first elastic portion to push the floating portion toward the lead screw so that the protuberance is inserted into the external thread, and a second elastic portion to push the floating portion toward the screw groove to thereby prevent the protuberance from escaping from the external thread when the floating portion is transformed elastically.

Abstract: A optical pickup system for use in a disk drive includes a stepping motor, a lead screw supported by a bracket and coupled to the stepping motor, in which the lead screw has spiral grooves formed on an outer periphery of the lead screw and engaged to a slider to move an optical pickup head in a radial direction of a disk, a plurality of guide shafts, installed to a main base in parallel with the lead screw, for guiding the optical pickup head in the radial direction of the disk, and a positioning mechanism for supporting the bracket which is installed to the main base to move in any direction to automatically maintain a position of the lead screw to the slider, thereby minimizing a load applied to the stepping motor.

Abstract: An optical pickup transferring apparatus including a slider having a base, a floating portion elastically coupled to the base, the floating portion having on one side thereof at least one protuberance inserted into the external thread of a lead screw, and an elastic element located on the top of the base and the floating portion. The elastic element includes a first elastic portion to push the floating portion toward the lead screw so that the protuberance is inserted into the external thread, and a second elastic portion to push the floating portion toward the screw groove to thereby prevent the protuberance from escaping from the external thread when the floating portion is transformed elastically.