Actuator device for generating a longitudinal positioning movement

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 ( 7 a ) 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 ).

2. The actuator device ( 1 ) of claim 1 , wherein the threaded drive ( 8 ) is a ball screw, the ball screw includes a plurality of balls ( 11 ) spatially between the threaded spindle ( 10 ) and the threaded nut ( 9 ).

3. The actuator device ( 1 ) of claim 2 , wherein the ball screw further includes a ball return.

4. The actuator device ( 1 ) of claim 1 , wherein the threaded drive ( 8 ) is a lead screw.

5. The actuator device ( 1 ) of claim 1 , further comprising a floating bearing ( 12 ), the rotor carrier ( 6 ) being at least indirectly supported relative to the actuator housing ( 2 ) via the floating bearing ( 12 ).

6. The actuator device ( 1 ) of claim 1 , wherein the rotor ( 5 ) includes at least one magnetic element ( 15 ), each of the at least one magnetic element ( 15 ) being fixed to the rotor carrier ( 6 ).

7. The actuator device ( 1 ) of claim 6 , wherein the at least one magnetic element ( 15 ) comprises one or more of a sleeve, a ring, or a rod.

8. The actuator device ( 1 ) of claim 1 , further comprising a securing element ( 13 ), the fixed bearing ( 7 ) being axially fixed to the actuator housing ( 2 ) by the securing element ( 13 ).

9. The actuator device ( 1 ) of claim 8 , wherein the securing element ( 13 ) is radially within a winding overhang ( 25 ) of the electric motor ( 3 ).

10. The actuator device ( 1 ) of claim 1 , further comprising an axial spring ( 17 ) in a spring holder ( 18 ) of a spring casing ( 16 ), the spring casing ( 16 ) being rotationally fixed with respect to the actuator housing ( 2 ), the threaded spindle ( 10 ) being operatively connected to the axial spring ( 17 ).

11. The actuator device ( 1 ) of claim 10 , wherein the spring holder ( 18 ) is rotationally fixed to the threaded spindle ( 10 ), wherein the spring holder ( 18 ) is secured against rotation relative to the spring casing ( 16 ).

12. The actuator device ( 1 ) of claim 1 , wherein an interior space ( 19 ) of the actuator housing ( 2 ) is fluid-sealed with respect to an external atmosphere.

13. The actuator device ( 1 ) of claim 1 , further comprising a circuit board ( 20 ) for at least indirect interconnection of the electric motor ( 3 ).

14. The actuator device ( 1 ) of claim 13 , further comprising at least one sensor ( 21 ) for detecting a rotational position of the electric motor ( 3 ).

15. The actuator device ( 1 ) of claim 13 , further comprising a floating bearing ( 12 ), the rotor carrier ( 6 ) being at least indirectly supported relative to the actuator housing ( 2 ) via the floating bearing ( 12 ),

wherein the circuit board ( 20 ) defines a central opening ( 36 ), a bearing journal ( 26 ) being guided through the central opening ( 36 ), the floating bearing ( 26 ) being accommodated on the bearing journal 26 in order to support the rotor carrier ( 6 ) with respect to the actuator housing ( 2 ).

16. The actuator device ( 1 ) of claim 1 , wherein the rotor is radially within the stator.

17. 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 );

a circuit board ( 20 ) for at least indirect interconnection of the electric motor ( 3 ), the circuit board ( 20 ) defining a central opening ( 36 );

a bearing journal ( 26 ) guided through the central opening ( 36 );

a floating bearing ( 12 ) accommodated on the bearing journal 26 to at least indirectly support the rotor carrier ( 6 ) relative to the actuator housing ( 2 ); 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 ) being rotationally fixed to the rotor carrier ( 6 ) and to a bearing inner race ( 7 a ) of the fixed bearing ( 7 ), the threaded nut ( 9 ) being at least partially radially within the fixed bearing ( 7 ), the fixed bearing ( 7 ) supporting axial loads from the threaded drive ( 8 ) on the actuator housing ( 2 ).