Vacuum Cleaner Side Brush and Airflow Design for Edge Cleaning
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Solution Overview
Problem
Vacuum cleaners struggle to effectively clean the edges of floors near upright surfaces due to the width of the cleaning head, requiring repeated passes or the use of additional accessories like crevice tools, and robotic vacuum cleaners lack sufficient dirt pickup due to inadequate brush engagement and motor power.
Innovation Solution
A cleaning accessory with a housing featuring rotating brushes and airflow paths, including flexible cleaning elements that can engage and flex to reach edges, and a rotatable cleaning bar with a motor-driven mechanism to improve dirt pickup along surfaces, including edges, by adjusting the position and orientation of the brushes to ensure thorough cleaning in a single pass.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the cleaning head width is increased to cover more area, then cleaning coverage is improved, but edge cleaning capability deteriorates
Solution Approach 1:
The cleaning device is segmented into multiple functional zones: a main cleaning head for general floor surfaces and side brushes positioned at the edges for targeted edge cleaning. This segmentation allows each component to specialize in its optimal cleaning function, resolving the contradiction between coverage area and edge cleaning precision.
Solution Approach 2:
The invention extends cleaning capability from the horizontal plane to the vertical dimension by positioning side brushes that can contact both the floor surface and the upright surface simultaneously. This dimensional extension enables effective edge cleaning without compromising the main cleaning head's coverage area.
2Manufacturing precision
If additional cleaning accessories are added for edge cleaning, then edge cleaning capability is improved, but device complexity increases
Solution Approach 1:
The invention merges the edge cleaning function with the main cleaning head by integrating side brushes directly onto the cleaning head assembly. This consolidation eliminates the need for separate crevice tools or additional accessories, reducing device complexity while maintaining effective edge cleaning capability.
Solution Approach 2:
The cleaning head is designed with multi-functionality, serving both as the primary cleaning surface for open floor areas and as an edge cleaning device through its integrated side brushes. This universal design allows a single accessory to perform multiple cleaning functions, reducing the total number of tools needed.
3Area of stationary object
If brushes are added to robotic vacuum cleaners for side cleaning, then edge cleaning coverage is improved, but dirt pickup effectiveness deteriorates
Solution Approach 1:
The side brushes are positioned with specific local quality characteristics: they extend partially beyond the housing to contact edge surfaces, and are strategically located adjacent to side air inlets. This localized positioning ensures that dislodged dirt is immediately drawn into the airflow path, maintaining high dirt pickup effectiveness while expanding edge cleaning coverage.
4Manufacturing precision
If flexible cleaning elements are positioned to engage edges, then edge cleaning capability is improved, but airflow path complexity increases
Solution Approach 1:
The flexible cleaning elements act as intermediaries between the external edge surfaces and the internal airflow path. They are positioned to engage edge surfaces while naturally guiding dislodged dirt toward the side air inlets, effectively mediating the transfer of dirt from the cleaning contact point to the suction zone without requiring complex airflow channeling.
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 solution enables efficient edge cleaning without the need for additional tools, ensuring thorough dirt pickup and maintaining the cleaning accessory's level operation while rotating, thus enhancing cleaning efficiency and convenience.
Implementation Method 1
the at least one flexible cleaning element is arranged to flex from a first position remote from the at least one side air inlet to a second position adjacent to the at least one side air inlet
Implementation Method 2
a second airflow path between the at least one side inlet and the air outlet
Data Source
AI summary
A cleaning accessory for a vacuum cleaner comprises a housing having a first air inlet on an underside of the housing and an air outlet and a first airflow path between the first air inlet and the air outlet. The cleaning accessory also comprises at least one cleaning brush having at least one flexible cleaning element projecting outwards from a side of the housing. The cleaning accessory also comprises at least one side air inlet on the side of the housing and a second airflow path between the at least one side inlet and the air outlet. The at least one flexible cleaning element is arranged to engage a surface to be cleaned adjacent to the at least one side air inlet.