Wiper Adapter Curved Wall Geometry for Higher Pressing Force

The patent converts the harmful effect of air flow turbulence and negative pressure behind the adapter into a beneficial pressing force. By designing the adapter with a specific aerodynamic shape (curved upper wall with defined geometry), the turbulent air flow and low-pressure zone that would normally destabilize the wiper are transformed into a suction effect that presses the wiper blade firmly against the glazed surface, complementing the natural air flow deflection effect.

The patent applies curvature to the upper wall of the adapter, replacing a flat surface with a curved aerodynamic profile. This curved surface is designed with specific geometric parameters (defined by straight lines and curvature radius) to optimize air flow characteristics. The curvature creates the desired negative pressure zone without requiring complex mechanical components, achieving the pressing effect through aerodynamic shaping alone.

The patent extends the lateral wall beyond the vertical and transverse section defined by the upper wall's end edges, adding a third dimensional element to the adapter geometry. This extension creates an additional surface that interacts with air flow to enhance the negative pressure effect. The extension is defined with specific geometric constraints (distance from the section plane) to ensure manufacturability while achieving the desired aerodynamic performance.