| 摘要 |
An optical pickup head feeding device ( 1 ) for driving an optical pickup head ( 4 ) of an optical recording/reproducing apparatus ( 100 ) has a motor ( 11 ), a motor housing ( 12 ) accommodating the motor, a first cone gear ( 13 ), a transmission gear subassembly ( 14 ), and a rack ( 15 ). The first cone gear is connected to and driven by the motor. The transmission gear subassembly has a second cone gear ( 142 ) and a spur gear ( 141 ) coaxially connected together, a diameter of second cone gear being greater than that of the spur gear. The second cone gear meshes with the first cone gear, and the spur gear meshes with the rack. The rack mates with the optical pickup head. The cooperative meshing of the first cone gear, the transmission gear subassembly and the rack gives the optical pickup head feeding device a low drive transfer ratio for precise positioning of the optical pickup head.
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