Device for damping vibrations of driveshaft of torque transmission device of car, has damping unit equipped with external rotation ring and stiffener, and sleeve arranged distinct from damping unit and fixedly engaged in damping unit

摘要

The device (20) has a damping unit (30) equipped with a external rotation ring (33) around a longitudinal axis (X) and a stiffener (36), which extends from an interior face (33A) from the external ring toward the longitudinal axis. A sleeve (40) is arranged distinct from the damping unit and fixedly engaged in the damping unit. The damping unit includes an interior ring (31), which is connected to the external ring by the stiffener. The sleeve is mounted tight in the interior ring of the unit. The sleeve has length (L1) greater than length (L2) of the unit.