Wheel driving apparatus

A wheel driving apparatus including a cylindrical inner housing supported by a vehicle body via a suspension, a wheel supported by the cylindrical inner housing so that the wheel is rotatable relative to the cylindrical inner housing, a motor having a stator attached to the cylindrical inner housing and a rotor attached to the wheel, the wheel comprising:

• a main body portion;
• an outside portion positioned on an outer side of the vehicle body;
• and
• a wheel attachment including a circular brake disc, the circular disc brake having an outer diameter smaller than an inner periphery of the outside portion and being attached to the main body portion on the outer side of the vehicle body,
• wherein the rotor is attached to the main body portion,
• wherein when the wheel attachment is attached to the main body portion, the wheel attachment does not prevent the outside portion from being attached to or detached from the main body portion, and
• wherein the main body portion comprises:
• a center portion that has a rib extending along an entire inner periphery of the center portion toward a rotational axis of the wheel;
• and
• an inside portion that has a rib extending along an entire inner periphery of the inside portion toward the rotational axis of the wheel, and
• the motor is retained between these ribs.