Transmission for vehicle

A transmission for a vehicle, the transmission comprising:

• a compound planetary gear set including four rotation elements having a first rotation element, a second rotation element, a third rotation element, and a fourth rotation element, wherein the first rotation element of the four rotation elements is used as an output element;
• a first coaxial gear fixedly connected to an input shaft, and mounted coaxially with the compound planetary gear set;
• a second coaxial gear mounted coaxially with the first coaxial gear;
• a counter shaft, wherein a first connecting gear engaged with the first coaxial gear and a second connecting gear engaged with the second coaxial gear are fixedly connected to the counter shaft and wherein the counter shaft is aligned parallel to the input shaft;
• a first clutch provided to selectively connect the first coaxial gear to the second rotation element of the compound planetary gear set;
• a second clutch provided to selectively connect the second coaxial gear to the second rotation element of the compound planetary gear set;
• a third clutch provided to selectively connect the first coaxial gear to the third rotation element of the compound planetary gear set;
• a fourth clutch provided to selectively connect the second coaxial gear to the fourth rotation element of the compound planetary gear set;
• a first brake provided to selectively stop rotation of the third rotation element of the compound planetary gear set;
• and
• a second brake provided to selectively stop rotation of the fourth rotation element of the compound planetary gear set,
• wherein the compound planetary gear set includes a first planetary gear set including first three rotation elements and a second planetary gear set including second three rotation elements, to form six rotation elements including the four rotation elements, wherein the first planetary gear set and the second planetary gear set are single pinion planetary gear sets,
• wherein the first planetary gear set having the first three rotation elements includes a first sun gear, a first planet carrier, and a first ring gear,
• wherein the second planetary gear set having the second three rotation elements includes a second sun gear, a second planet carrier, and a second ring gear,
• wherein the first planet carrier is fixedly connected to the second ring gear to form the first rotation element,
• wherein the first sun gear is fixedly connected to the second sun gear to form the second rotation element,
• wherein the second planet carrier is the third rotation element, and
• wherein the first ring gear is the fourth rotation element.