| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotor having a wide damping frequency band of reducible vibration with a simple constitution. SOLUTION: A holder ring 4 is attached to a brake disk 2. An annular groove 6 extending in a rotation direction of the brake disk 2 is provided in the holder ring 4. A tension coil spring 5 is tightly bound in the groove 6 by its own elastic force. The tension coil spring 5 is installed movably in a rotation direction of the brake disk 2 so as to vibrate with a phase difference to the brake disk 2. COPYRIGHT: (C)2004,JPO
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