| 摘要 |
PROBLEM TO BE SOLVED: To provide an under-floor cover provided on the under-floor of a vehicle in which an aerodynamic performance is improved without deteriorating the discharge performance of foreign matter such as water or mud entering into the inside.SOLUTION: In an under-floor cover 10 having one or more openings 20 attached to the lower part of a vehicle to discharge entered foreign matter 40, a vortex generator 30 is provided in a vehicle front side of the opening 20 to be formed to be projected to the lower side of the vehicle and air stream 50 flowing below the vehicle is made turbulent to form three dimensional vortex 51. |
