Oscillations of the torsion damper, in particular for the clutch disc of a clutch, a friction disc of a motor vehicle

摘要

The invention relates to the hydraulic damping devices. / p & & p & this shock absorber of the oscillations is of the type comprising at least one chamber as a piston divides in the circumferential direction by two compartments, the ratio of volume varies with the relative rotation of the two elements of the shock absorber, the liquid then passing from one to the other of these chambers by an orifice. / p & & p & according to the invention, each chamber is formed by two cutouts 33, 35 possessing of different volumes and the piston is constituted by a rolling body 37 which rolls on the bottom 43, 45 of the two recesses, then with an elastic stress. / p & & p & main application: shock absorbers of the torsional vibration for a friction clutch disks for automobiles.