Vacuum Cleaner Nozzle Flaps for Uneven Surface Debris Pickup

The patent replaces rigid V-shaped protrusions with flexible flaps that can dynamically adjust their shape and position. The flexible flaps are made of elastic material that allows them to bend and adapt to uneven surfaces while maintaining their detritus guidance function. This dynamic flexibility resolves the contradiction between effective detritus guidance and adaptability to various surface conditions.

The patent employs flexible flaps made of elastic material instead of rigid structures. These flexible elements can conform to uneven surfaces like tiles and wood floors, maintaining contact and guidance functionality while adapting to surface irregularities. This directly addresses the adaptability problem caused by rigid V-shaped protrusions.

The flexible flaps dynamically adjust during nozzle movement, opening to allow detritus to pass through and close to guide detritus toward the suction aperture. This dynamic behavior prevents detritus from becoming trapped in recesses, ensuring complete detritus removal while maintaining effective guidance.

The patent changes the physical state and geometry of the guidance elements from fixed rigid structures to flexible elements that change shape and position. The flexible flaps can open and close, altering the geometry of potential detritus traps into open passages during operation, thereby preventing accumulation while maintaining guidance functionality.

The flexible flaps dynamically close during forward movement to maintain suction pressure and open during backward movement to allow detritus escape. This dynamic sealing action ensures that the opening in the flexible flap does not compromise suction pressure while enabling complete detritus removal when needed.

The flexible flaps undergo periodic opening and closing cycles corresponding to the back-and-forth movement of the nozzle. During the forward cleaning stroke, the flaps close to maintain suction pressure; during the return stroke, they open to allow detritus to escape. This periodic action resolves the contradiction between maintaining pressure and enabling complete detritus removal.

The patent uses flexible flaps made of elastic material that provides sufficient strength for the application while allowing the necessary flexibility. The material properties and dimensions are designed to balance adaptability to uneven surfaces with structural strength to withstand operational forces and maintain functionality.

The flexible flaps are constructed from elastic materials that combine flexibility with adequate structural strength. The composite nature of the material allows the flaps to bend and adapt to surfaces while maintaining the strength needed to resist deformation under suction pressure and mechanical stress during operation.