Transmission system for vehicle and driving speed reducing mechanism thereof

The invention relates to a driving speed reducing mechanism (2) of a transmission system for a vehicle. The driving speed reducing mechanism (2) comprises a driving part (5) and a speed reducing part(6) in transmission connection to the driving part (5), wherein the driving part (5) defines an accommodating space (13), and the speed reducing part (6) is at least partially accommodated in the accommodating space (13). The invention also relates to the transmission system (1), comprising the driving speed reducing mechanism (2), for the vehicle. 本发明涉及种用于车辆的传动系的驱动减速机构(2)，所述驱动减速机构(2)包括驱动部(5)和与所述驱动部(5)传动地连接的减速部(6)，其中，所述驱动部(5)限定出容置空间(13)，所述减速部(6)至少部分地容置在所述容置空间(13)内。本发明还涉及种用于车辆的、包括驱动减速机构(2)的传动系(1)。