Abstract: A flexible element, for example a flexible shaft, has a core (12) and a tubular sheathing (16) protecting the latter. Sleeve elements (20) surround the core and hold the tubular sheathing (16) between them. Different co-efficients of thermal expansion of the material for the tubular sheathing in comparison to the material of the core have previously led to undesirable distortions. To avoid these distortions in a structurally simple manner, at least one sleeve element (20) holds the tubular sheathing (16) with limited axial play (26). The play compensation between the sleeve element (20) and tubular sheathing (16) is particularly advantageous when the sleeve elements (20) are used for fixing the flexible elements (10).

Abstract: The actuator comprises a housing which has a longitudinal axis Z and in which an electric motor having a pinion is arranged. The pinion is in engagement in each case with at least one first gearwheel of a planetary gear, the first gearwheel forming, in each case together with a second gearwheel arranged directly adjacent, a uniform double gearwheel. One or more double gearwheels are arranged here. The first gearwheels run in a first toothed ring, which is connected fixedly to the housing. The respective second gearwheels run in a rotatably mounted, second toothed ring, which is connected to the part which is to be driven, with the number of teeth of the first toothed ring not being identical to the number of teeth of the second toothed ring. The invention furthermore relates to the use of the actuator for actuating a parking brake in a motor vehicle.

Abstract: A flexible element, for example a flexible shaft, has a core (12) and a tubular sheathing (16) protecting the latter. Sleeve elements (20) surround the core and hold the tubular sheathing (16) between them. Different coefficients of thermal expansion of the material for the tubular sheathing in comparison to the material of the core have previously led to undesirable distortions. In order to avoid said distortions in a structurally simple manner, it is proposed that at least one sleeve element (20) holds the tubular sheathing (16) with limited axial play (26). The play compensation between the sleeve element (20) and tubular sheathing (16) is particularly advantageous when the sleeve elements (20) are used for fixing the flexible element (10).