Double clutch transmission

A double clutch transmission comprising:

• a variable connector including a first clutch and a second clutch and selectively outputting a torque of an engine through the first clutch and the second clutch;
• an input driver including a first input shaft selectively connected to the engine through the first clutch and provided with a plurality of input gears fixedly disposed on an exterior circumference thereof, and a second input shaft selectively connected to the engine through the second clutch and provided with a plurality of input gears fixedly disposed on an exterior circumference thereof;
• a speed output driver including a first output shaft disposed in parallel with the first and second input shafts, a first speed output disposed on the first output shaft and provided with first and second synchronizers, a second output shaft disposed in parallel with the first and second input shafts, and a second speed output disposed on the second output shaft and provided with third and fourth synchronizers;
• and
• a reverse speed/motor driver disposed between the input driver and the speed output driver, achieving a reverse speed by transmitting torque from the input driver to the speed output driver, assisting the torque of the engine or performing regenerative braking,
• wherein first, second, third, and fourth input gears for odd-numbered speeds are disposed on the first input shaft, and fifth and sixth input gears for the reverse speed and even-numbered speeds are disposed on the second input shaft, and
• wherein the reverse speed/motor driver comprises:
• a motor/generator operated as a motor or a generator and provided with a motor/generator drive shaft;
• a reverse input gear disposed on the motor/generator drive shaft and engaged with the sixth input gear;
• and an idle gear disposed on the motor/generator drive shaft and engaged with the reverse speed gear of the third synchronizer.