Pivoting Drive Wheel Assembly for Easier Robot Cleaner Maintenance
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Solution Overview
Problem
Autonomous floor cleaners face the challenge of hair and debris buildup around the drive wheels, which is difficult to remove, especially when wet, leading to reduced functionality and increased maintenance time.
Innovation Solution
The autonomous floor cleaner features a drive system with a wheel assembly that can be selectively moved to a disengaged position, allowing for easy access and cleaning of the drive wheel, including a manual release mechanism such as pinch tabs for removal and servicing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the drive wheel is fixed in position during operation, then the robot maintains stable operation, but the drive wheel becomes difficult to access for cleaning and maintenance
Solution Approach 1:
The wheel assembly is designed with a pivotable connection to the housing, allowing it to dynamically change position between an in-use position during operation and a disengaged position for maintenance. This dynamic positioning resolves the contradiction by enabling easy access to the drive wheel when needed while maintaining stable operation during cleaning tasks.
2Loss of time
If the drive wheel remains engaged with the housing, then the robot maintains operational stability, but maintenance time increases due to difficult wheel access
Solution Approach 1:
The drive system is segmented into a movable wheel assembly and a stationary housing, connected through a pivotable joint. This segmentation allows the wheel assembly to be independently positioned - remaining engaged for operational stability or disengaged for quick maintenance access, thereby reducing maintenance time without compromising reliability during operation.
3Ease of repair
If the wheel assembly is made easily removable, then maintenance becomes simpler, but the risk of accidental disengagement during operation increases
Solution Approach 1:
The pivotable connection provides a controlled degree of freedom - the wheel assembly can be deliberately moved to a disengaged position for maintenance, but during normal operation it remains securely engaged. The dynamic nature of the connection allows easy servicing when intended while maintaining operational stability through proper engagement during cleaning tasks.
Data Source
AI summary
An autonomous floor cleaner can include a housing, a drive system for autonomously moving the housing over the surface to be cleaned, and a controller for controlling the operation of the autonomous floor cleaner. The drive system can include at least one drive wheel for driving the housing across a surface to be cleaned. The drive wheel can be selectively moved from an engaged or in-use position to a disengaged or maintenance position. In the disengaged or maintenance position, the wheel is disengaged from the autonomously moveable housing such that it can be pivoted, extended, removed, or otherwise moved farther away from the autonomously moveable housing.