Electromechanical park lock

1. A gearbox ( 40 ) comprising

a parking lock ( 42 ) which is integrated inside a gearbox housing ( 60 ) of the gearbox ( 40 ), the parking lock ( 42 ) including

a transfer device ( 48 ),

a detent ( 50 ) and

a parking lock gear ( 52 ),

characterized in that an electromechanical actuator ( 44 ) is arranged outside the gearbox housing ( 60 ), which actuator is centered with respect to the transfer device ( 48 ) on an interface on the gearbox housing ( 60 ) and is sealed off from the gearbox housing ( 60 ) at the interface

wherein the interface is formed as an intermediate piece ( 58 ) which is sealed off from the gearbox housing ( 60 ) and accommodates a drive shaft ( 54 ) of the electromechanical actuator ( 44 ),

wherein the intermediate piece ( 58 ) has a shaft sealing ring ( 66 ) and an axial sealing ring ( 70 ), which are both incorporated in the intermediate piece ( 58 ) and are positioned against a shaft piece ( 56 ) and the gearbox housing ( 60 ) respectively.

2. The gearbox ( 40 ) as claimed in claim 1 , characterized in that the intermediate piece ( 58 ) with the shaft piece ( 56 ), the axial sealing ring ( 70 ) and the shaft sealing ring ( 66 ) is centered in relation to a gear wheel shaft ( 64 ) of the transfer device ( 48 ) on the gearbox housing ( 60 ).

3. The gearbox ( 40 ) as claimed in claim 1 , characterized in that the detent ( 50 ) of the parking lock ( 42 ) and a deflection means ( 78 ), which transfers the force of the electromechanical actuator ( 44 ) to a locking element ( 90 ) associated with the detent ( 50 ), are mounted on one and the same pivot bearing ( 82 ) with mutually deviating force directions of the force of the actuator ( 44 ) and the actuating force of the locking element ( 90 ).

4. The gearbox ( 40 ) as claimed in claim 3 , characterized in that the force of the electromechanical actuator ( 44 ) is transferred to the deflection means ( 78 ) via a linear movement ( 80 ) of a rack ( 74 ) and this deflection means transfers an actuating force to the locking element ( 90 ) in a direction which differs from the force direction of the force of the actuator ( 44 ).

5. The gearbox ( 40 ) as claimed in claim 4 , characterized in that the force direction of the force of the electromechanical actuator ( 44 ) is perpendicular to the actuating force of the clamping element ( 90 ).

6. The gearbox ( 40 ) as claimed in claim 3 , characterized in that the transfer device ( 48 ) comprises a gear wheel ( 72 ) and a rack ( 74 ) which actuate the deflection means ( 78 ) via a coupling member ( 76 ).

7. The gearbox ( 40 ) as claimed in claim 3 , characterized in that the deflection means ( 78 ) transfers the force of the electromechanical actuator ( 44 ) to a push rod ( 86 ), on which the locking element ( 90 ) actuating the detent ( 50 ) is accommodated, such that the said force is offset through 90°.

8. The gearbox as claimed in claim 3 , wherein the deflection means ( 78 ) is a pivoting bracket, wherein the gearbox further includes a coupling member ( 76 ) coupled to both the electromechanical actuator ( 44 ) and the pivoting bracket, and a push rod ( 86 ) coupled to both the pivoting bracket and the locking element ( 90 ).

9. The gearbox ( 40 ) as claimed in claim 1 , characterized in that the electromechanical actuator ( 44 ) is an electric motor.

10. A vehicle comprising at least one electric drive and the gearbox ( 40 ) as claimed in claim 1 .

11. A gearbox ( 40 ) comprising

a parking lock ( 42 ) which is integrated in a gearbox housing ( 60 ) of the gearbox ( 40 ), the parking lock ( 42 ) including

a transfer device ( 48 ),

a detent ( 50 ) having a locking element ( 90 ), and

a parking lock gear ( 52 ),

characterized in that the transfer device ( 48 ) has a deflection means ( 78 ) which is pivotally arranged on a pivot bearing ( 82 ) which simultaneously represents a bearing of the detent ( 50 ), wherein the deflection means ( 78 ) is a pivoting bracket that is configured to transfer a force from an electromechanical actuator ( 44 ) to the locking element ( 90 ), wherein the force from the electromechanical actuator ( 44 ) is configured to extend along a first direction, and wherein the bracket is configured to be rotated by the force from the electromechanical actuator ( 44 ), and to generate an actuating force for the locking element ( 90 ) that extends along a second direction different than the first direction.

12. A vehicle comprising at least one electric drive and the gearbox ( 40 ) as claimed in claim 11 .

13. A method for assembling the gearbox ( 40 ) as claimed in claim 11 , having the following method steps:

a) assembling the transfer device ( 48 ) in an oil chamber ( 46 ) of the gearbox ( 40 ),

b) inserting a shaft piece ( 56 ) of an intermediate piece ( 58 ) into a gear wheel shaft ( 64 ) of the transfer device ( 48 ),

c) aligning the shaft piece ( 56 ) of the intermediate piece ( 58 ) with respect to a drive shaft ( 54 ) of the transfer device ( 48 ),

d) fixing the intermediate piece ( 58 ) in a sealing manner on the gearbox housing ( 60 ) in an alignment position of the intermediate piece ( 58 ) which is established according to method step c), and

e) assembling an electromechanical actuator ( 44 ) outside the gearbox housing ( 60 ) in a torsion-resistant manner on the shaft piece ( 56 ), such that the intermediate piece ( 58 ) and the electromechanical actuator ( 44 ) are centered with respect to one another on the transfer device ( 48 ) assembled according to method step a).

14. The method as claimed in claim 13 , characterized in that the intermediate piece ( 58 ) is fixed on the gearbox housing ( 60 ) by means of a floating bearing.

15. The gearbox as claimed in claim 11 , further comprising the electromechanical actuator ( 44 ), and wherein the first direction is perpendicular to the second direction.

16. A method for assembling a gearbox ( 40 ) having a parking lock ( 42 ) which is integrated inside a gearbox housing ( 60 ) of the gearbox ( 40 ), the parking lock ( 42 ) including a transfer device ( 48 ), a detent ( 50 ), and a parking lock gear ( 52 ), the gearbox ( 40 ) also having an electromechanical actuator ( 44 ) arranged outside the gearbox housing ( 60 ), which actuator is centered with respect to the transfer device ( 48 ) on an interface on the gearbox housing ( 60 ) and is sealed off from the gearbox housing ( 60 ) at the interface, the method having the following method steps:

a) assembling the transfer device ( 48 ) in an oil chamber ( 46 ) of the gearbox ( 40 ),

b) inserting a shaft piece ( 56 ) of an intermediate piece ( 58 ) into a gear wheel shaft ( 64 ) of the transfer device ( 48 ),

c) aligning the shaft piece ( 56 ) of the intermediate piece ( 58 ) with respect to a drive shaft ( 54 ) of the transfer device ( 48 ),

d) fixing the intermediate piece ( 58 ) in a sealing manner on the gearbox housing ( 60 ) in the alignment position of the intermediate piece ( 58 ) which is established according to method step c), and

e) assembling the electromechanical actuator ( 44 ) outside the gearbox housing ( 60 ) in a torsion-resistant manner on the shaft piece ( 56 ), such that the intermediate piece ( 58 ) and the electromechanical actuator ( 44 ) are centered with respect to one another on the transfer device ( 48 ) assembled according to method step a).

17. The method as claimed in claim 16 , characterized in that the intermediate piece ( 58 ) is fixed on the gearbox housing ( 60 ) by means of a floating bearing.

18. A gearbox ( 40 ) comprising

a parking lock ( 42 ) which is integrated inside a gearbox housing ( 60 ) of the gearbox ( 40 ), the parking lock ( 42 ) including

a transfer device ( 48 ),

a detent ( 50 ) and

a parking lock gear ( 52 ),

characterized in that an electromechanical actuator ( 44 ) is arranged outside the gearbox housing ( 60 ), which actuator is centered with respect to the transfer device ( 48 ) on an interface on the gearbox housing ( 60 ) and is sealed off from the gearbox housing ( 60 ) at the interface;

wherein the detent ( 50 ) of the parking lock ( 42 ) and a deflection means ( 78 ), which transfers the force of the electromechanical actuator ( 44 ) to a locking element ( 90 ) associated with the detent ( 50 ), are mounted on one and the same pivot bearing ( 82 ) with mutually deviating force directions of the force of the actuator ( 44 ) and the actuating force of the locking element ( 90 ).