Structural unit for a drive train of a motor vehicle

The invention relates to a structural unit (1) for a drive train of a motor vehicle, comprising at least one coupling arrangement (2) configured to uncouple an internal combustion engine from the drive train, and a speed-adaptive tuned mass damper device (4), in particular a centrifugal force damper, for reducing vibrations in the drive train, having at least one damper mass (40) that can be deflected along a deflection path. Furthermore, a restriction device (50) is provided which is designed to exert a force on the at least one damper mass (40) such that the movements of the damper mass (40) are at least restricted. The restriction device (50) is further designed to be actuated by at least one element of the coupling arrangement (2) in order to restrict the movement of the at least one damper mass (40). The invention further relates to a hybrid drive train arrangement having such a structural unit (1).