Patent ID: 8062162

Claim:
Differential gear unit for motor vehicles for controllably distributing the driving force between two output shafts, comprising a housing and therein a) a differential gear ( 4 ) with an input element ( 14 ) and two output elements ( 16 , 19 ) which have a drive connection to output shafts ( 7 , 8 ); b) a step-up gear unit ( 5 ) which has a drive connection on the drive side to the input element ( 14 ) of the differential gear; c) two adjacent, hydraulically controllable clutches ( 24 , 25 ) which have a drive connection on one side to the output side of the step-up gear unit ( 5 ) and on the other side to one output shaft ( 7 , 8 ) each, said two clutches ( 24 , 25 ) each having an inner part ( 32 , 42 ), an outer part ( 30 , 40 ), a laminated disk pack ( 33 , 43 ) and a pressure ring ( 35 , 45 ); d) an intermediate part ( 26 ) which is fixed to the housing and which contains hydraulic activation means ( 56 , 58 , 61 , . . . ) is arranged between the two clutches ( 24 , 25 ); e) the pressure rings ( 35 , 45 ) of the two clutches ( 24 , 25 ) are on the side of the clutches facing the intermediate part ( 26 ); f) the outer part ( 30 ) of a first clutch ( 24 ) of said two clutches, which is closer to the output side of the step-up gear unit ( 5 ), has a drive connection, on one side, to the step-up gear unit ( 5 ) and, on the other side, to the inner part ( 42 ) of the second clutch ( 25 ) via an intermediate shaft ( 37 ) which penetrates the intermediate part ( 26 ); and g) the inner part ( 32 ) of the first clutch ( 24 ) has a drive connection to the first output shaft ( 7 ), and the outer part ( 40 ) of a second clutch ( 25 ) of said two clutches has a drive connection to the second output shaft ( 8 ).