VIBRATION PROTECTING APPARATUS OF SPINDLE MOTOR FOR OPTICAL DISK SYSTEM

摘要

a mode setting part (42); a spindle motor driving part (44); a spindle motor rotating number detecting part (18); and a microcomputer (40) for controlling the spindle motor driving part (44); a spindle gear (14); a damping gear (20); a lever (30; a cam gear (32); a cam gear driving means (46). The microcomputer (40) controls the cam gear driving means (46) if a power-on mode is set in the mode setting part (42) to rotate the cam gear (32) forward so that the damping gear (20) may be in mesh with the spindle gear (14). If the rotation number of the spindle motor (16) reaches to a given value; it controls the cam gear driver (46) to rotate the cam gear (32) reverse so that the damping gear (20) may be isolated from the spindle gear (14).