| 摘要 |
PROBLEM TO BE SOLVED: To provide an axial vibration preventing mechanism capable of actuating a magnetic pre-load for energizing a rotating shaft in an extension direction of material with a simple structure. SOLUTION: In this rotor R1, a metal shaft 103 is inserted in the center of a resin turn table 101. In the shaft 103, a bent part is formed and pressed in the peripheral edge of a back yoke 105 of a clamp magnet 104 for clamping a record information disk which is disposed at the turn table 101 so as to face a motor side at the timing of assembling the rotor R into a stator S. The clamp magnet 104 is disposed at a gap surrounded by an annular groove 101a formed around the back yoke 105 and the shaft 103 of the turn table 101. COPYRIGHT: (C)2004,JPO |
