| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve motor assembling workability by using a replaced turntable on the upper surface of the rotor of a spindle motor for rotating a selected optical disk loaded in the turntable by a driving means. SOLUTION: An optical disk D is moved to a deck by the driving means of the back and forth direction of a tray and the disk D selected by stopping of the tray is passed through a disk guide 105 and loaded in the upper surface of a rotor 107 fixed in the deck. Then, the disk D is pressure-fixed by a magnetic force supplied from the magnet 111 of a chuck 110 fixed on the guide 105. The rotor 107 having the fixed disk D is rotated at a specified speed. At this time, since the upper and lower step parts of a rotary shaft 104 are respectively supported by bearings 102 and 103 provided in the upper and lower sides of a bearing casing 101 fixed and supported on a bracket 100, when the rotor 107 is rotated, vibration of the disk D is limited to a minimum and specified recording/reproducing is performed.</p> |
