| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a torque fluctuation absorbing damper achieving high damping during the rotation of a low speed, which is in a resonant region, and also achieving low damping at a high rotation speed, which is in a vibration absorption region, and thereby capable of controlling high-low degrees of damping. <P>SOLUTION: The damper includes: a damper unit including a vibration ring connected through a damper rubber to a hub fixed to a rotation axis; and a coupling unit including a pulley connected through a coupling rubber to the hub. The pulley is disposed in an inner circumference side of the vibration ring, and a bearing is interposed between the vibration ring and the pulley. The vibration ring is divided into a plurality of division bodies on a circle's perimeter, each division body can be displaced in a radial direction. In the vibration ring, during the rotation of a low speed, the division body is slidably in contact with the bearing, thereby a friction damping force by sliding is generated, and during the rotation of a high speed, the division body is displaced outward in a radial direction by centrifugal force, thereby the friction damping force is decreased or eliminated. <P>COPYRIGHT: (C)2012,JPO&INPIT |
