| 摘要 |
PROBLEM TO BE SOLVED: To provide a revolving speed adaptive vibration absorber obtaining particularly a long life and sure operability. SOLUTION: In this revolving speed adaptive vibration absorber, a plurality of inertia mass members 2 adjacent in a peripheral direction are supported respectively by two hold parts 3 adjacent in a peripheral direction in a hub part, a pin 5 is included in these hold parts, and this pin can be rolled on the inertia mass member curved mutually in a reverse direction and curved tracks 4, 4' in the hub part 1, in this way, when a rotational vibration overlapped in a rotary motion is generated, a space of the inertia mass member from a rotary shaft 6 is changed along an operating track curved to be partitioned by the curved track and the pin, the inertia mass member is contained in at least one annular chamber 11 of the hub part, and a lubricant can be received in this chamber. Further, at least one through part 7 is provided in at least one of the inertia mass members and/or the hub part, so as to supply the lubricant to the curved track by the through part.
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