Edge Cleaning Brush with Planetary Gear System for Debris Containment
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Solution Overview
Problem
Conventional edge cleaning brushes on autonomous floor cleaners often have tip velocities that are too high, causing debris to be flung outward rather than collected, and the slower inner areas may not effectively contact the floor for cleaning.
Innovation Solution
The edge cleaning brush incorporates a planetary gear system to drive multiple cleaning implements at different rotational velocities, with a slower outer implement to prevent debris scattering and a faster inner implement for effective sweeping and dusting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the edge cleaning brush rotates at a high velocity to improve cleaning coverage, then the cleaning path increases, but debris is flung outside the cleaning path
Solution Approach 1:
The edge cleaning brush is divided into multiple cleaning implements (outer cleaning implement and inner cleaning implement) that can rotate at different velocities. This segmentation allows the outer implement to rotate slower to contain debris while the inner implement rotates faster to provide effective cleaning, resolving the contradiction between cleaning coverage and debris scattering.
2Object-generated harmful factors
If the edge cleaning brush rotates at a low velocity to prevent debris scattering, then debris containment improves, but the inner areas do not effectively contact the floor
Solution Approach 1:
Different parts of the edge cleaning brush are assigned different rotational velocities according to their specific cleaning needs. The outer cleaning implement rotates at a lower velocity to contain debris along the edges, while the inner cleaning implement rotates at a higher velocity to effectively contact and clean the floor in inner areas. This local differentiation of operational parameters resolves the contradiction between debris containment and cleaning effectiveness.
3Device complexity
If multiple cleaning implements rotate at the same velocity to simplify the drive system, then device complexity decreases, but cleaning performance deteriorates
Solution Approach 1:
The drive system is designed to dynamically rotate different cleaning implements at different velocities. The planetary gear system enables the outer and inner cleaning implements to rotate at different speeds while being driven by a single motor, making the system adaptable to different cleaning requirements without excessive complexity.
4Device complexity
If a single motor drives all cleaning implements to reduce component count, then device complexity decreases, but the ability to optimize individual implement speeds is lost
Solution Approach 1:
A single motor is designed to perform multiple functions by driving different cleaning implements at different velocities through the planetary gear system. This universal drive mechanism allows one motor to optimize the speed of each cleaning implement according to its specific requirements, achieving both component reduction and speed optimization capability.
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
This configuration ensures effective sweeping and dusting performance while preventing debris scattering, enhancing the cleaning efficiency of autonomous floor cleaners by optimizing the speed of the cleaning implements.
Implementation Method 1
a planetary gear system for driving the outer cleaning implement at a slower speed than the inner cleaning implement
Data Source
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AI summary
A floor cleaner (10, 210) can include a housing (14, 238) adapted for movement over a surface to be cleaned and at least one edge cleaning brush (12) provided on the housing (14, 238). The edge cleaning brush (12) includes multiple cleaning implements (100, 102, 170) which rotate at different velocities. A gear system, such as a planetary gear system (128, 172, 182, 200), can drive one cleaning implement at a lower speed than another cleaning implement.