Wheel orientation mechanism and wheeled carrier

A wheel orientation mechanism arranged on a wheeled carrier, the wheeled carrier comprising a frame having a mounting base, and a wheel assembly having a wheel seat, the wheel seat being pivotally connected to the mounting base, the wheel orientation mechanism being configured to selectively restrict or allow rotation of the wheel seat relative to the mounting base, and the wheel orientation mechanism comprising:

• a locking mechanism comprising:
• a locking assembly switchable between a locking state and an unlocking state, when in the locking state, the locking assembly restricting the rotation of the wheel seat relative to the mounting base, and when in the unlocking state, the locking assembly allowing the rotation of the wheel seat relative to the mounting base;
• and
• a driving mechanism comprising a power unit and a driving assembly, the driving mechanism being configured to drive the locking assembly to switch the locking assembly between the locking state and the unlocking state.