| 摘要 |
PURPOSE: A vehicle transmission system including a sub motor for gear shifting is provided to shift a gear depending on whether the sub motor is operated or not, thereby easily changing the speed of a vehicle while reducing power consumption. CONSTITUTION: A vehicle transmission system includes a main motor (200), a sub motor (700) and a connection gear. The connection gear connects the main motor with the sub motor. A gear is shifted depending on whether the sub motor is operated or not. The connection gear includes a planetary gear including a worm wheel (340) and a worm gear (350) engaged in the worm wheel. The worm wheel is connected to the planetary gear. |
