Patent ID: 7244212

Claim:
A multi-speed gearbox, with a drive input shaft ( 3 ) connected to a reduction planetary gear set ( 10 ), with a drive output shaft ( 4 ) connected to a main planetary gear set ( 30 ), with first, second, third, fourth and fifth shifting elements (A to E) by the selective engagement of which six forward speeds can be engaged and a gearbox input speed (n_input) of the drive input shaft ( 3 ) can be transmitted to drive output shaft ( 4 ) in such a manner that of the shifting elements which are actuated for any speed, in order to shift from one speed to a next higher or a next-lower speed, only one shifting element is disengaged and a different shifting element is engaged, such that the main planetary gear set ( 30 ) has three uncoupled input elements, an output element of the reduction planetary gear set ( 10 ) can be connected, via a first shifting element (A), to a first input element of the main planetary gear set ( 30 ) and, via a second shifting element (B), to a second input element of the main planetary gear set ( 30 ), the drive input shaft ( 3 ) can be connected via, a fifth shifting element (E), to a third input element of the main planetary gear set ( 30 ) and an element of the reduction planetary gear set ( 10 ) is fixed, the reduction planetary gear set ( 10 ) is a plus transmission with inner and outer planetary gear wheels ( 12 , 15 ) whose webs ( 14 , 17 ) are coupled to one another; wherein the coupled webs ( 14 , 17 ) of the inner and outer planetary gear wheels ( 12 , 15 ) of the reduction planetary gear set ( 10 ) are connected to one another by a web plate ( 18 ), an input element of the fifth shifting element (E) is axially directly adjacent to the web plate ( 18 ), the web plate ( 18 ) is sealed against the input element of the fifth shifting element (E) on a diameter above bolts ( 13 , 16 ) respectively of the inner and outer planetary gear wheels ( 12 , 15 ) of the reduction planetary gear set ( 10 ), and lubricant is fed ( 20 ) to the inner and outer planetary gear wheels ( 12 , 15 ) of the reduction planetary gear set ( 10 ) via an axial gap between the web plate ( 18 ) and the input element of the fifth shifting element (E).