| 摘要 |
<p>Requirement: An object of the present invention is to provide a disk apparatus that includes a vibration-damping mechanism capable of substantially curbing vibrations due to eccentricity of the center of gravity of a discoid recording medium, caused to a drive chassis on which mounted are a motor for rotationally driving the discoid recording medium, and a record-playback unit for recording a digital signal onto and/or playing that back from the discoid recording medium. Solution: A vibration-damping mechanism for the drive chassis (1) is configured in such a manner that insulators (11) each are placed in at least three respective predetermined positions of a drive chassis (1) on which a motor (2) and an optical pickup unit (5) are mounted, and a weight plate (10) is floatingly and movably supported on the drive chassis (1) by way of the insulators (11), wherein the shape of the weight plate (10) is determined based on a predetermined vibration-damping frequency, the at least three respective predetermined positions, and a spring constant of the insulators (11) which are identical to each other.</p> |
