US 12,435,780 B1
Actuator for generating a combination of an axial and an oscillating movement
Justin Taylor, Lakeville, MA (US); David Mello, Swansea, MA (US); and Christopher Blake, Taunton, MA (US)
Assigned to Maxon International AG, Sachseln (CH)
Filed by Maxon International AG, Sachseln (CH)
Filed on May 21, 2024, as Appl. No. 18/669,911.
Int. Cl. F16H 37/12 (2006.01)
CPC F16H 37/124 (2013.01) 20 Claims
OG exemplary drawing
 
11. An actuator with a spindle drive comprising a threaded shaft and a spindle nut, wherein the spindle nut is rotatably actuatable to generate a main axial movement of the threaded shaft along an axis of the threaded shaft, wherein the actuator comprises an oscillating device and the spindle nut is movably arranged along the axis, such that the oscillating device introduces an oscillating movement along the axis onto the spindle nut and thereby onto the threaded shaft, whereby a total axial movement of the threaded shaft is generated that is the combination of the main axial movement and the oscillating movement, wherein the oscillating device is configured such that a rotation of the spindle nut causes the oscillating device to introduce the oscillating movement along the axis onto the spindle nut,
wherein the oscillating device comprises a first ripple plate with a first ripple profile and a counterpart,
wherein either the first ripple plate is either torsion resistantly coupled or formed integrally with the spindle nut and the counterpart is torsion resistantly coupled to a casing part of the actuator in a fixed position along the axis
or the counter part is either torsion resistantly coupled or formed integrally with the spindle nut and the first ripple plate is torsion resistantly coupled to the casing part of the actuator in the fixed position along the axis,
such that the first ripple plate and the counterpart contact each other in a direction along the axis and move along each other due to the rotation of the spindle nut relative to the casing part, whereby the oscillating movement along the axis is introduced onto the spindle nut.