US Patent 10124838 Underfloor structure of automotive vehicle

A deflector comprises a protrusion portion which protrudes downward, including a slant face portion slanting obliquely rearward and downward, and a vertical wall portion which is provided in back of the protrusion portion to extend in a vehicle width direction. A lower end portion of the vertical wall portion is positioned at a lower level than a rear end portion of the slant face portion. The lower end portion of part of the vertical wall portion located inward from the other part of the vertical wall portion located so as to overlap the front wheel in a front view is positioned at a higher level than the lower end portion of the other part of the vertical wall portion located so as to overlap the front wheel in the front view.