Patent ID: 8850927
Filing Date: 2014-10-07
Classification: F16F,Y10T

Abstract:
1. A dynamic vibration absorber mounted on a power transmission system for absorbing torsional vibration associated with torque fluctuation of an engine, the dynamic vibration absorber comprising: a disk-like main body including a plurality of rolling element bores arranged on an outer circumferential portion of the disk-like main body; a plurality of rollers loosely fitted in the rolling element bores of the disk-like main body; and a pair of annular guide plates respectively mounted on both sides of the disk-like main body, wherein each rolling element bore includes an outer rim extending along an arc, each roller includes a groove formed on an outer circumferential surface of the roller, the groove extending along the entire circumference of the roller, the outer rim of each rolling element bore is engaged with the groove of the associated roller, each roller includes shafts respectively provided on both sides of the roller, the shafts projecting from the center of the roller, and the shafts of each roller are supported by the pair of guide plates, wherein an elastic ring is mounted on the shafts of each roller.