Vehicle driving apparatus and vehicle

A vehicle driving apparatus, comprising:

• a housing;
• and
• a driving gear, a driven gear, a driven gear shaft, an output half shaft, a roller cage assembly, and an electromagnetic switching mechanism which are all located inside the housing;
• wherein
• the driving gear and the driven gear are meshed for transmission connection;
• the roller cage assembly is sleeved on an inner side of the driven gear shaft;
• the roller cage assembly comprises a cage, a roller group and an annular elastic element;
• wherein
• the roller group comprises a plurality of pin rollers, and a side surface of each pin roller is provided with a groove for mounting the annular elastic element;
• the roller group and the annular elastic element are both mounted on the cage;
• along a radial direction of the cage, the annular elastic element is located between the cage and the roller group, to allow the cage to be in transmission connection with the driven gear shaft through the roller group;
• an inner surface of the driven gear shaft is provided with a plurality of cannelures, and each cannelure is used for accommodating one pin roller in the roller group;
• the output half shaft is sleeved on an inner side of the cage;
• and
• the electromagnetic switching mechanism is configured, when energized, to provide the cage with resistance to a rotation following the driven gear, to allow sidewalls of the cannelures to squeeze the plurality of pin rollers to tighten the output half shaft.