Differential transmission for a vehicle
A differential transmission for a vehicle includes a first planet carrier of a first planetary gearset connected with a first output shaft by a torque-proof connection. A second ring gear of a second planetary gearset is torque-proofly connected with a second output shaft. A sun ring gear forms a first ring gear of the first planetary gearset at an inner circumference and a second sun gear of the second planetary gearset at an outer circumference. A second planet carrier of the second planetary gearset is supported at a stationary component. A first planet carrier of the first planetary gearset is rotatably supported at the stationary component by a support. The support of the first planet carrier is arranged opposite the torque-proof connection in an axial direction with respect to a first planet gear.
1 . A differential transmission ( 3 ) for a vehicle, comprising:
a first output shaft ( 5 );
a second output shaft ( 6 );
a first planetary gearset ( 10 ) comprising a first sun gear ( 11 ), a first planet carrier ( 12 ), a first planet gear ( 13 ), and a first ring gear ( 14 ), the first sun gear ( 11 ) engaged with the first planet gear ( 13 ), the first planet gear ( 13 ) engaged with the first ring gear ( 14 ), the first planet carrier ( 12 ) connected with the first output shaft ( 5 ) by a torque-proof connection ( 30 );
a second planetary gearset ( 20 ) comprising a second sun gear ( 21 ), a second planet carrier ( 22 ), a second planet gear ( 23 ), and a second ring gear ( 24 ), the second sun gear ( 21 ) engaged with the second planet gear ( 23 ), the second planet gear ( 23 ) is engaged with the second ring gear ( 24 ), the second ring gear ( 24 ) connected with the second output shaft ( 6 );
a sun ring gear ( 32 ) forming the first ring gear ( 14 ) at an inner circumference and the second sun gear ( 21 ) at an outer circumference; and
a stationary component ( 31 ),
wherein the second planet carrier ( 22 ) is supported at the stationary component ( 31 ), and the first planet carrier ( 12 ) is rotatably supported at the stationary component ( 31 ) by a support ( 40 ), and
wherein the support ( 40 ) of the first planet carrier ( 12 ) is arranged opposite the torque-proof connection ( 30 ) in an axial direction with respect to the first planet gear ( 13 ), the support ( 40 ) of the first planet carrier ( 12 ) being supported at a cylindrical outer circumference of a section of the stationary component ( 31 ) or at a cylindrical inner circumference of part of the stationary component ( 31 ).
2 . The differential transmission ( 3 ) of claim 1 , further comprising an input element ( 4 ) torque-proofly connected to the first sun gear ( 11 ) and rotatably supported at the stationary component ( 31 ) by an additional support ( 43 ).
3 . The differential transmission ( 3 ) of claim 2 , wherein the support ( 40 ) of the first planet carrier ( 12 ) is arranged outside the additional support ( 43 ) of the input element ( 4 ) in a radial direction.
4 . The differential transmission ( 3 ) of claim 2 , wherein the support ( 40 ) of the first planet carrier ( 12 ) overlaps the additional support ( 43 ) of the input element ( 4 ) in the axial direction.
5 . The differential transmission ( 3 ) of claim 2 , wherein the support ( 40 ) of the first planet carrier ( 12 ) is arranged next to the additional support ( 43 ) of the input element ( 4 ) in the axial direction.
6 . The differential transmission ( 3 ) of claim 1 , wherein the first sun gear ( 11 ) is hollow, and the first output shaft ( 5 ) extends through the first sun gear ( 11 ) and coaxially to the first sun gear ( 11 ).
7 . The differential transmission ( 3 ) of claim 6 , wherein:
an input element ( 4 ) is torque-proofly connected to the first sun gear ( 11 ) and rotatably supported at the stationary component ( 31 ) by an additional support ( 43 );
the input element ( 4 ) is configured as a hollow shaft; and
the first output shaft ( 5 ) extends through the input element ( 4 ).
8 . The differential transmission ( 3 ) of claim 6 , wherein:
an input element ( 4 ) is torque-proofly connected to the first sun gear ( 11 ) and rotatably supported at the stationary component ( 31 ) by an additional support ( 43 ); and
the input element ( 4 ) and the first sun gear ( 11 ) as one piece.
9 . The differential transmission ( 3 ) of claim 1 , wherein:
the sun ring gear ( 32 ) is ring-shaped;
the first ring gear ( 14 ) is arranged radially inside the second sun gear ( 21 ); and
the first ring gear ( 14 ) overlaps the second sun gear ( 21 ) in the axial direction.
10 . The differential transmission ( 3 ) of claim 1 , wherein the second output shaft ( 6 ) is arranged coaxially to the first output shaft ( 5 ) and opposite the first output shaft ( 5 ) in the axial direction.
11 . The differential transmission ( 3 ) of claim 1 , wherein a torque introduced into the first sun gear ( 11 ) is transmittable to the first output shaft ( 5 ) and to the second output shaft ( 6 ).
12 . A drive unit ( 2 ), comprising:
a motor ( 73 ); and
the differential transmission ( 3 ) of claim 1 ,
wherein the motor ( 73 ) is coupled to the differential transmission ( 3 ) in order to drive the first sun gear ( 11 ).
13 . A vehicle, comprising:
the drive unit ( 2 ) of claim 12 ; and
drive wheels ( 71 ),
wherein the drive unit ( 2 ) is mounted in the vehicle ( 1 ) in order to drive the drive wheels ( 71 ).
14 . The differential transmission ( 3 ) of claim 1 , wherein the support ( 40 ) comprises a bearing.
15 . The differential transmission ( 3 ) of claim 14 , wherein the bearing comprises a needle sleeve having needles.
16 . The differential transmission ( 3 ) of claim 1 , wherein the second planetary carrier ( 22 ) is torque-proofly fastened to the stationary component ( 31 ).