A drive mechanism with an electromotor driving a mechanical transmission with a forceback facility

A drive mechanism with an electromotor driving a mechanical transmission for converting a rotation into a rotary or linear movement for a mechanical actuator, with a forceback facility through a return spring that is arranged for effecting a rotary return force towards a fallback position effected on an axis that forms part of the transmission. An electromechanical drive mechanism comprises a driving electromotor (20) provided with a rotatable driving first axis, and mechanical transmission means (22, 24, 28, 34) driven by said rotatable driving first axis, for through converting a first rotary movement of the rotatable driving first axis into a second rotary or linear movement of an actuator member (32) driving a mechanical actuator along a range of actuator positions. The drive mechanism is furthermore provided with an forceback facility (30, 31, 32, 38) for effecting a return force on the drive mechanism towards a fallback position. The drive mechanism is furthermore mounted in a housing facility (34). In particular, the drive mechanism has the forceback facility (30, 31, 36, 38) operated in a mechanical manner and comprising a return spring (31, 36, 38) that is arranged for effecting a rotary return force on a rotatable axis (26) that forms part of the mechanical transmission means.