Floor Cleaning Apparatus with Offset Cleaning Unit and Swing Mechanism
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Solution Overview
Problem
Existing floor cleaning machines struggle to effectively clean areas close to walls and navigate through narrow spaces due to limitations in offset capabilities and mechanical complexity, leading to reliability and maintenance issues.
Innovation Solution
A floor cleaning apparatus with a cleaning unit that can be offset and linked to a steering mechanism via a swing mechanism, allowing for synchronized reorientation during turns and a fixed working width, enabling both offset and non-offset cleaning modes while maintaining accessibility and reducing maintenance complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a variable working width cleaning unit is provided to enable narrow space passage, then the machine can pass through narrow slots or spaces, but the mechanical elements are exposed to dirt and water, system becomes complex, and maintenance accessibility is poor
Solution Approach 1:
The cleaning apparatus is divided into a main body and a separate cleaning unit that can be detached. The cleaning unit includes a cleaning head and a support structure that can be separated from the main body, allowing independent maintenance and replacement without disassembling complex mechanical width-adjustment mechanisms.
Solution Approach 2:
The cleaning unit is extracted as a separate removable component from the main body. This extraction eliminates the need for complex variable width mechanisms within the main structure, as the cleaning unit can be independently positioned and maintained away from the main apparatus.
2Ease of operation
If the cleaning unit is attached directly to the steering axle to link cleaning unit turn with steering wheel turn, then the cleaning unit reorients with the path of travel, but no capability is provided to incorporate a transition ratio between the degree of turn of the steering wheel and the degree of turn of the cleaning unit
Solution Approach 1:
A swing mechanism acts as an intermediary between the steering mechanism and the cleaning unit. This swing mechanism includes a swing arm and swing pivot that provide mechanical advantage and transition ratio, allowing the cleaning unit to reorient in synchronization with the path of travel while incorporating adjustable turn ratios.
3Adaptability or versatility
If a cleaning unit with variable working width is provided, then the machine can adapt to different cleaning widths, but mechanical elements are susceptible to dirt and water exposure leading to low reliability
Solution Approach 1:
The cleaning unit is designed with dynamic positioning capability through the swing mechanism, allowing it to move laterally and rotate independently. This dynamic design eliminates the need for complex variable width mechanisms that are prone to failure, while maintaining adaptability through controlled movement of the cleaning head position.
Data Source
AI summary
An apparatus for cleaning a floor includes a housing, wheels by which the apparatus is adapted to move; a motive device for moving the apparatus, a steering mechanism, and a cleaning assembly including a cleaning unit and an offset mechanism adapted to move the cleaning unit to or from an offset position projecting beyond one lateral side of the apparatus. In another embodiment, an apparatus for cleaning a floor includes a housing, wheels by which the apparatus is adapted to move, a motive device for moving the apparatus, a steering mechanism, and a cleaning assembly including a cleaning unit and a swing mechanism indirectly linking the cleaning unit to the steering mechanism such that when the apparatus is in an operative mode, the cleaning unit reorients its position in synchronization with the path of travel of the apparatus. Optionally, a lifting device may raise and lower the cleaning assembly.