Torsional vibration damper

摘要

A torsional vibration damper has a transmission element on the drive side and a transmission element on the driven side which is rotatable relative to the drive-side transmission element against the action of a damping device. The damping device serves to transmit torque between the two transmission elements and has at least one coupling body that moves along at least one guide path which is formed in one of the transmission elements. This coupling body is displaceable at least in the circumferential direction and is in a working connection with the other transmission element via a driver device so that a deflection of one of the transmission elements in the circumferential direction by a relative movement of the coupling body results in a deflection of the other transmission element. Each guide path is provided with a curvature having a curvature location at the maximum distance from the axis of rotation. The coupling body is preferably constructed with its own curvature at least along its rolling region facing the guide path, wherein the coupling body has a projection extending in the direction of a transmission element having a driver device. The projection engages in a material cut out portion of the driver device at the corresponding transmission element and is guided in this material cut out portion so that the material cut out portion allows movement of the coupling body substantially in the radial direction, but enables a maximum movement in the circumferential direction within the framework of a predeterminable angle.