Electrical wheel brake actuator with improved end position recognition

An electrical wheel brake actuator for motor vehicles, having an electric motor-gear assembly with a rotation-translation converter assembly that comprises a nut-spindle arrangement in a gear housing, wherein the wheel brake actuator is designed such that brake means can execute an actuating movement in the direction of a brake rotor, and with an elastic element which is clamped between a release end stop of the nut-spindle arrangement and the gear housing in order to allow an electric motor to be automatically electrically switched off by an electronic control unit, wherein the elastic element has at least two disc springs to form an expanded, segmented force-travel spring curve composed of multiple different spring curve portions, wherein the force-travel spring curve includes a degressively curved spring curve portion B-C and a progressively curved spring curve portion D-E,

• wherein the force-travel spring curve includes a substantially linearly oriented spring curve portion C-D which has a substantially constant gradient, the spring curve portion C-D positioned between the degressively curved spring curve portion B-C and the progressively curved spring curve portion D-E, and
• wherein the force-travel spring curve includes a linearly oriented spring curve portion A-B with a first substantially constant gradient a1, and a linearly oriented spring curve portion E-F with a second substantially constant gradient a2, wherein the gradient a1 of the spring curve portion A-B is less than or equal to the gradient a2 of the spring curve portion E-F.