Vacuum Cleaner Head Roller Assembly for Large Debris Pick-Up
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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 reduced suction pressure and ineffective cleaning.
Innovation Solution
A cleaner head design featuring a rotating rear roller and wheel assembly that elevates the roller off the surface, combined with a deformable sealing material to maintain suction while allowing the roller to drive the cleaner head without pressing engagement, ensuring effective debris pick-up and pressure maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cleaner head maintains close proximity to the surface for pick-up performance, then suction effectiveness is improved, but large debris is pushed across the surface instead of being drawn in
Solution Approach 1:
The roller is made rotatable to dynamically interact with debris on the surface. As the cleaner head moves, the roller rotates and engages with large debris items, preventing them from being pushed across the surface while maintaining close proximity for effective suction of smaller particles
Solution Approach 2:
The roller acts as an intermediary element between the cleaner head and the surface. It mediates the interaction with large debris by mechanically engaging and guiding it toward the suction opening, while the deformable sealing material mediates the sealing function to maintain suction pressure
2Ease of operation
If the cleaner head rides up over debris to maintain clearance, then obstruction is avoided, but pressure within the cleaner head is lost which adversely affects pick-up performance
Solution Approach 1:
The sealing material's deformability parameter is utilized to adapt to surface variations and debris. When the cleaner head encounters debris, the sealing material deforms to maintain contact and sealing, preventing pressure loss while allowing the head to clear obstacles without riding up
Solution Approach 2:
The combination of the rotatable roller and deformable sealing material creates a dynamic system that adapts to debris encounters. The roller rotates to engage and guide debris, while the sealing material dynamically deforms to maintain sealing, preserving suction pressure during operation
3Productivity
If a roller is pressed against the surface for cleaning, then surface contact is improved, but the roller should not press against the surface to allow free rotation and debris engagement
Solution Approach 1:
The roller is designed to be self-driven by the movement of the cleaner head across the surface. As the head moves, the roller naturally rotates due to contact with the surface and debris, eliminating the need for an external drive mechanism or complex support system
Solution Approach 2:
The roller serves multiple functions: it engages with large debris to prevent pushing, guides debris toward the suction opening, and maintains close proximity of the cleaner head to the surface for effective suction, all without requiring pressing engagement or external power
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 pressure, preventing the cleaner head from riding up over obstacles and ensuring efficient cleaning performance on various surfaces.
Implementation Method 1
the first wheel which is arranged to drive the roller as the cleaner head is moved across the surface
Implementation Method 2
The deformable material may be a resiliently deformable material. The deformable material may be arranged such that, in use, the deformable material seals against the surface on which the cleaner head is supported
Data Source
Figure 1
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AI summary
A cleaner head (8) for a vacuum cleaner (2), comprising a housing (22), a roller (20) and a wheel assembly (96, 98) arranged to support the cleaner head (8) on a surface such that the roller (20) is held out of pressing engagement with the surface. The roller (20) is arranged to rotate with respect to the housing (22) and the wheel assembly (96, 98) comprises a first wheel (96) which is arranged to drive the roller (20).