US Patent 10100910 Driving system

A driving system includes a drive source for driving a left drive portion and a right drive portion, a power transmission mechanism having a first and second differential mechanisms each including a first rotating element, a second rotating element and a third rotating element and a switching unit. The first rotating elements of the first and second differential mechanisms are connected to each other so as to rotate in the same direction, the second rotating elements of the first and second differential elements are connected to the left drive portion and the right drive portion, respectively, and the third rotating elements of the first and second differential mechanism are connected to each other so as to rotate in opposite directions.