Vehicle Outer Mirror Asymmetric V-Gap Wind Noise Reduction

The patent applies asymmetry by configuring the mirror visor at an angle relative to the side glass rather than parallel, creating a tapered gap that is wider at the front and narrower at the rear. This asymmetric arrangement prevents wind from directly entering the gap while maintaining manufacturing feasibility, thereby reducing noise transmission into the passenger compartment.

The patent converts the harmful effect of wind entering the gap into a beneficial flow pattern by designing the gap to be open at the front and closed at the rear. The wind flow is redirected along the exterior surface, transforming the potential noise-generating turbulence into a controlled flow that reduces noise transmission while maintaining the simple mirror structure.

The patent resolves the contradiction by transitioning from a uniform gap configuration to a three-dimensional tapered gap where the distance between the mirror visor and side glass varies along the length. This dimensional change allows the gap to be wider at the front for stable wind flow and narrower at the rear for reduced noise transmission, simultaneously achieving both objectives.

The patent applies parameter changes by varying the gap width parameter along the length of the mirror visor. The gap is designed to be larger at the front end and progressively smaller toward the rear end, optimizing both wind flow stability and noise reduction performance through controlled parameter variation rather than maintaining a constant gap dimension.