Wiper Blade W-Shaped Cross-Section for Wind Lift Reduction

The wiper blade is segmented into multiple functional components: a flexible carrier element with specific curvature, a separate wiping element with defined geometry, and a connecting device with pivotable joints. This segmentation allows each component to be optimized independently - the carrier element manages wind lift through curvature while the wiping element handles the actual wiping function, resolving the contradiction between structural simplicity and wind resistance reduction.

The patent introduces dynamic elements including a pivotable connecting device that allows the wiper blade to adapt its angle relative to the oscillating arm, and a flexible carrier element that can deform to reduce wind lift. The wiping element can also tilt during operation to optimize its position. These dynamic adaptations enable the blade to maintain simplicity while actively reducing wind resistance through movement rather than complex fixed structures.

The patent applies local quality by concentrating material only where structurally necessary. The carrier element uses material strategically to achieve the required curvature and flexibility, while the wiping element is designed with minimal material at the tip for optimal wiping contact. The connecting device uses material precisely at the pivot points for strength, while other areas remain minimal. This localized material distribution maintains structural strength while minimizing overall material consumption.

The carrier element is designed as a flexible thin-walled structure that achieves the required structural strength and curvature through its geometry and elastic properties rather than through massive material sections. This flexible shell approach allows the blade to maintain strength while using minimal material, reducing both weight and raw material consumption compared to rigid, material-intensive designs.