The present invention relates to a drive arrangement, comprising a motor drive shaft, which makes the drive force of a motor available, an output shaft, via which the drive arrangement outputs and accumulates a rotational force, a coupling, which is designed to transmit a rotational force from the motor drive shaft to the output shaft and from the output shaft to the motor drive shaft, and a braking arrangement, which counteracts a rotational movement of the output shaft with a braking force.

A multi-disk brake for a motor vehicle has two multi-disk mechanisms and an actuation device for brake actuation and/or brake release of the multi-disk mechanisms, and an electric drive for translational actuation (spreading) of the actuation device, such as, in particular, the ramp unit. During a spreading operation, the multi-disk mechanisms are pretensioned in a metered manner by the actuation device and produce a desired frictional engagement, and a correspondingly reversed activation of the actuating mechanism enables a correspondingly metered brake release. By means of the electric drive, the action of the multi-disk brake can be metered overall in a particularly precise, sensitive and compensated manner in modern vehicle topology, including all peripheral brake components and systems, including recuperation.

There is a braking assembly for limiting rotation of a drive shaft in a reverse direction. A hub is fixed for rotation with the drive shaft. The hub has an external cylindrical section and at least one hub pocket on the external cylindrical section. An actuatable brake portion is sized and shaped to be mounted for rotation around the hub. The actuatable brake portion has an internal cylindrical section, at least one brake pocket on the internal cylindrical section corresponding with the at least one hub pocket, and at least one brake shoe. The braking assembly also includes at least one ball. During use, the at least one ball cooperates with the at least one hub pocket and the corresponding at least one brake pocket to permit relative rotation of the hub and the actuatable brake portion when the drive shaft is rotating in a forward direction and to limit rotation of the hub and the actuatable brake portion when the drive shaft is rotating in the reverse direction by causing the at least one brake shoe to contact a braking surface.