Patent ID: 11729555

Abstract:
An electrodynamic actuator (1a, 1b) is disclosed, which is designed to be connected to a plate like structure (2) and which comprises a coil arrangement (3a, 3b) with at least one voice coil (4a, 4b), a magnet system (5) with a movable magnetic circuit part (7, 7a . . . 7f) and a static magnetic circuit part (6a . . . 6F) and a spring arrangement (12) coupling the static magnetic circuit part (6a . . . 6F) to the movable magnetic circuit part (7, 7a . . . 7f) and allowing a relative movement between the same. Both the spring arrangement (12) and the magnet system (5) provide a total restoring force (FT) directed towards an idle position (P0) of the movable magnetic circuit part (7, 7a . . . 7f). A part of a total restoring force gradient (ΔFT/Δz) caused by the magnet system (5) is at least 10% of the total restoring force gradient (ΔFT/Δz) in said idle position (P0) of the movable magnetic circuit part (7, 7a . . . 7f). In addition, an output device (17) with the electromagnetic actuator (1a, 1b) mounted to a plate like structure (2) is disclosed.