Vacuum Cleaner Head Wheel-Roller Assembly for Large Debris Pickup
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Solution Overview
Problem
Conventional cleaner heads for vacuum cleaners often push large debris across surfaces instead of drawing it in due to the close proximity required for pick-up performance, leading to a loss of pressure and reduced pick-up efficiency.
Innovation Solution
A cleaner head design featuring a roller and wheel assembly that lifts the cleaner head off the surface, combined with a deformable sealing material to maintain suction while allowing the roller to rotate and drive the cleaner head, ensuring effective debris pick-up without stalling or losing pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cleaner head is positioned close to the surface for pick-up performance, then suction efficiency is improved, but large debris is pushed across the surface instead of being drawn in
Solution Approach 1:
The cleaner head incorporates a dynamic wheel assembly that allows the head to lift and tilt when encountering debris, transitioning from a static close-positioning design to a dynamic adaptive design. This enables the head to maintain optimal contact distance while accommodating debris of various sizes without pushing them across the surface.
Solution Approach 2:
The invention changes the parameter of contact distance between the cleaner head and the surface. By using a wheel assembly with a deformable seal, the system allows the contact distance to vary dynamically - maintaining close proximity for fine debris pick-up while permitting larger distances when large debris is encountered, thus preventing debris from being pushed across the surface.
2Productivity
If the cleaner head is positioned close to the surface, then fine debris pick-up is improved, but the cleaner head may ride up over debris resulting in loss of pressure
Solution Approach 1:
The wheel assembly provides dynamic adaptation by allowing the cleaner head to tilt and lift when encountering obstacles. This dynamic mechanism prevents the head from riding up over debris, maintaining stable pressure and suction performance while still enabling close contact for fine debris pick-up during normal operation.
Solution Approach 2:
The deformable seal acts as a cushioning element that absorbs the impact when the cleaner head encounters debris. This beforehand cushioning prevents sudden pressure losses by allowing the seal to deform and accommodate debris, maintaining continuous contact and stable suction pressure.
3Ease of operation
If the roller is held out of pressing engagement with the surface, then the roller can rotate freely to drive the cleaner head, but direct contact with the surface is lost
Solution Approach 1:
The deformable seal serves as an intermediary element between the roller and the surface. It allows the roller to rotate freely without direct pressing engagement while maintaining surface contact through the seal's deformation. The seal mediates the interaction, enabling both free rotation and surface contact to coexist.
Solution Approach 2:
The deformable seal functions as a flexible element that can deform to maintain surface contact while allowing the roller to rotate freely. This flexible component enables the roller to drive the cleaner head without direct pressing engagement, combining rotational freedom with maintained surface contact for effective operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design effectively picks up both small and large debris while maintaining suction, preventing the cleaner head from riding up over obstacles and ensuring consistent pick-up performance on various surfaces.
Implementation Method 1
The deformable sealing material may be arranged such that, in use, the deformable sealing material seals against the surface on which the cleaner head is supported
Data Source
AI summary
A cleaner head for a vacuum cleaner including a housing, a roller and a wheel assembly arranged to support the cleaner head on a surface such that the roller is held out of pressing engagement with the surface. The roller is arranged to rotate with respect to the housing and the wheel assembly includes a first wheel which is arranged to drive the roller.