US 12,066,101 B2
Actuator device for generating a longitudinal positioning movement
Matthias Reisch, Ravensburg (DE); Jürgen Wafzig, Bermatingen (DE); and Peter Sigg, Friedrichshafen (DE)
Assigned to ZF Friedrichshafen AG, Friedrichshafen (DE)
Appl. No. 17/785,551
Filed by ZF Friedrichshafen AG, Friedrichshafen (DE)
PCT Filed Nov. 20, 2020, PCT No. PCT/EP2020/082803
§ 371(c)(1), (2) Date Jun. 15, 2022,
PCT Pub. No. WO2021/121855, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 10 2019 219 813.9 (DE), filed on Dec. 17, 2019.
Prior Publication US 2023/0008294 A1, Jan. 12, 2023
Int. Cl. F16H 25/22 (2006.01); F16H 61/00 (2006.01); F16H 63/30 (2006.01); H02K 1/278 (2022.01); F16H 25/20 (2006.01)
CPC F16H 63/304 (2013.01) [F16H 25/2214 (2013.01); F16H 61/0006 (2013.01); H02K 1/278 (2013.01); F16H 25/2015 (2013.01); F16H 2025/2031 (2013.01); F16H 2025/2075 (2013.01); F16H 2063/3063 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An actuator device (1) for generating a longitudinal positioning movement to engage a shift element, the actuator device (1) comprising:
an actuator housing (2);
an electric motor (3) within the actuator housing (2), the electric motor (3) having a stator (4) and a rotor (5), the stator (4) being at least indirectly stationarily fixed at the actuator housing (2), the rotor (5) being rotatable relative to the stator (4), the rotor (5) being rotationally fixed to a rotor carrier (6) to prevent rotation of the rotor (5) relative to the rotor carrier (6), the rotor carrier (6) being at least indirectly supported relative to the actuator housing (2) via a fixed bearing (7); and
a threaded drive (8) having a threaded nut (9) and a threaded spindle (10), the threaded nut (9) being rotationally driveable and axially fixed, the threaded spindle (10) being axially displaceable along the threaded nut (9) and being secured against rotation, the threaded nut (9), the rotor carrier (6), and a bearing inner race (7a) of the fixed bearing (7) being formed as a single monolithic part, the threaded nut (9) being at least partially radially within the fixed bearing (7) with at least a portion of an axial length of the threaded nut (9) that engages with the threaded spindle (10) being directly radially within with fixed bearing (7), the fixed bearing (7) supporting axial loads from the threaded drive (8) on the actuator housing (2).