Multi-stage dual clutch transmission for hybrid vehicle

A multi-stage dual clutch transmission apparatus for a vehicle, the multi-stage dual clutch transmission comprising:

• a first input shaft selectively connectable to an engine through a first clutch and having odd driving gears fixed thereon;
• a second input shaft disposed coaxially with the first input shaft, wherein the second input shaft is selectively connectable to the engine through a second clutch, and has even driving gears fixed thereon;
• a first output shaft and a second output shaft disposed in parallel with the first and second input shafts and having odd and even driven gears being freely rotatable thereon in mesh with the odd and even driving gears, respectively;
• and
• a motor shaft configured to be disposed in parallel with the first and second output shafts, be connected to a motor, to have first and second delivery gears being freely rotatable on the motor shaft, and to have first and second one-way clutches transmitting power to the first and second delivery gears respectively, wherein each of the first and second one-way clutches is configured to transmit the power when rotating in a predetermined direction thereof,
• wherein the first delivery gear is engaged with one of the odd driven gears or the even driven gears, and
• the second delivery gear is engaged with an even driving gear among the even driven gears when the first delivery gear is engaged with an odd driven gear among the odd driven gears, and is engaged with an odd driving gear among the odd driven gears when the first delivery gear is engaged with an even driven gear among the even driven gears.