Patent ID: 7255661

Claim:
A multi-stage automatic transmission comprising: a drive input shaft (AN) and an output drive (AB); first, second and third planetary gearwheel assemblies (RS 1 , RS 2 , RS 3 ), and first, second, third, fourth and fifth shift control elements (A to E); the first, the second and the third planetary gearwheel assemblies (RS 1 , RS 2 , RS 3 ) are arranged coaxially in series adjacent one another, and the second planetary gearwheel assembly (RS 2 ) is arranged spatially between the first and the third planetary gearwheel assemblies (RS 1 , RS 3 ); a sun gearwheel (SO 3 ) of the third planetary gearwheel assembly (RS 3 ) is securable to a transmission housing (GG) of the multi-stage automatic transmission by the first shift control element (A); the drive input shaft (AN) is connected to a sun gearwheel (SO 2 ) of the second planetary gearwheel assembly (RS 2 ); the drive input shaft (AN) is connectable to a sun gearwheel (SO 1 ) of the first planetary gearwheel assembly (RS 1 ) by the second shift control element (B) and to a web (ST 1 ) of the first planetary gearwheel assembly (RS 1 ) by the fifth shift control element (E); the sun gearwheel (SO 1 ) of the first planetary gearwheel assembly (RS 1 ) is fixable to the transmission housing (GG) by the third shift control element © and the web (ST 1 ) of the first planetary gearwheel assembly (RS 1 ) is fixable to the transmission housing (GG) by the fourth shift control element (D); the output drive (AB), an annular gearwheel (HO 1 ) of the first planetary gearwheel assembly (RS 1 ) and a web (ST 3 ) of the third planetary gearwheel assembly (RS 3 ) are connected with one another, a web (ST 2 ) of the second planetary gearwheel assembly (RS 2 ) is connected to an annular gearwheel (HO 3 ) of the third planetary gearwheel assembly (RS 3 ), and the web (ST 1 ) of the first planetary gearwheel assembly (RS 1 ) is connected with an annular gearwheel (HO 2 ) of the second planetary gearwheel assembly (RS 2 ); wherein the second and the fifth shift control elements (B, E) are combined as a single structural group, the second shift control element (B) has one or more disks ( 200 ) actuated by a second actuating device ( 210 ), the fifth shift control element (E) has one or more disks ( 500 ) actuated by a fifth actuating device ( 510 ), a common disk support (ZYLBE) carries the respective one or more disks ( 200 , 500 ) of the second and the fifth shift control elements (B, E), and the one or more disks ( 200 ) of the second shift control element (B) are larger than the one or more disks ( 500 ) of the fifth shift control element (E); and one of a spur gearing stage (STST) and a chain drive is provided as a final drive output, and one of a first spur gearwheel (STR 1 ) of the spur gearing stage (STST) and a first sprocket wheel (KTR 1 ) of the chain drive is located between and adjacent to both the third planetary gear assembly and to an outer wall of the transmission housing (GG) or a housing cover fixed thereto.