Patent ID: 9350214
Filing Date: 2016-05-24
CPC Classification: F16D,H02K

Claim Text:
1. An actuator, comprising: a drive element rotatable about a rotation axis; an output element rotatable about the rotation axis; a coupling device which couples the drive element to the output element to create a torsional force, the coupling device including a transmission element rotatably coupled to the output element, and which is axially displaceable with respect to the output element between a rest position and an operating position in which the transmission element is rotatable about the rotation axis, wherein the transmission element is radially displaceable with respect to the drive element; a brake device, secured to a housing of the actuator, and which secures the transmission element against torsion in the rest position; and a resilient device which pretensions the transmission element into the rest position, and which applies a direct force between the output element, the transmission element, at least one roller member, and the drive element, wherein the coupling device is configured such that, starting from the rest position of the transmission element, by way of an initial rotation movement of the drive element, using a torsional backlash, the transmission element is displaceable into the operating position counter to the pretensioning by the resilient device, and after the transmission element reaches the operating position, the transmission element is configured to be driven by the drive element in a radial direction to carry out a rotation movement by way of an additional rotation movement of the drive element in order thereby to also drive the output element to carry out a rotation movement, wherein the resilient device is configured to provide a force between the output element and the transmission element.