Patent ID: 9625020
Date: 2017-04-18
CPC Classifications: F16H

Claim:
1. A shifting arrangement for a dual clutch transmission as change speed transmission for motor vehicles, comprising: two coaxially arranged input shafts which are respectively activatable via a respective clutch of a dual clutch, an axially parallel output shaft and gearwheel sets respectively arranged on the input shafts and the output shaft shiftable by means of synchronizing clutches for forming a plurality of forward gears and a reverse gear, said gearwheel sets being divided into a first subtransmission comprising one of the input shafts and a second subtransmission comprising the other one of the input shafts; and two shifting units shiftable between two different transmission stages and being assigned to the first subtransmission and the second subtransmission, respectively, wherein the shifting units are each constructed as a planetary transmission which is shiftable between the two transmission stages, wherein each shifting unit has an input element, an output element and a transmission element which is fixable via a respective brake for shifting to a lower one of the transmission stages, each planetary transmission further comprising a further clutch, wherein the planetary transmissions are shiftable via the respective further clutch into a higher one of the higher transmission stages having a ratio of 1:1, wherein each further clutch connects two respective elements of each planetary transmission with each other, wherein the input element of each planetary transmission is constructed as a ring gear, the output element is constructed as a web which carries planet gears, and the transmission element is constructed as a sun pear which meshes with the planet gears, and which is fixable via the respective brake or is connectable with one of the other input element and the output element of the planetary transmission via the further clutch, wherein the further clutch in each planetary transmission is provided between the driving ring gear and the sun gear, wherein the brake and the further clutch of one of the planetary transmissions are arranged together with the sun gear on a common hollow shaft.