Autonomous Coverage Robot Layout for Corner and Edge Cleaning
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Solution Overview
Problem
Existing autonomous floor cleaning robots struggle to effectively navigate and clean corners and edges due to their cylindrical shape, which limits their ability to maneuver and collect debris in tight spaces.
Innovation Solution
A compact autonomous coverage robot with a rectangular front form factor and a cleaning mechanism that can extend into corners, equipped with differential drive wheels, a bump sensor, and an accelerometer to navigate and adjust its cleaning path, allowing it to pivot and move in place to clean along walls and edges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a cylindrical shape is used for the robot, then the robot can rotate freely and maneuver around obstacles, but the robot cannot effectively clean along wall edges or in corners
Solution Approach 1:
The robot employs an asymmetric chassis design where the front portion has a rectangular shape while the rear portion has a rounded shape. This asymmetric configuration allows the robot to maintain rotational maneuverability from the rounded rear while the rectangular front enables effective cleaning along wall edges and in corners, resolving the contradiction between maneuverability and corner cleaning effectiveness
2Productivity
If a rectangular front form factor is used, then the robot can clean along wall edges and in corners, but the robot cannot rotate freely like a cylindrical shape
Solution Approach 1:
The robot's chassis is segmented into two distinct portions: a rectangular front portion for cleaning and a rounded rear portion for maneuvering. This segmentation allows each portion to fulfill its specific function optimally - the rectangular front enables corner cleaning while the rounded rear maintains rotational capability, thus resolving the contradiction between corner cleaning effectiveness and rotational maneuverability
3Productivity
If the cleaning mechanism is positioned at the front, then the robot can agitate and collect debris, but the robot cannot access tight spaces near walls
Solution Approach 1:
The cleaning mechanism is designed to extend beyond the front face of the rectangular chassis in a direction perpendicular to the main body, creating an extended cleaning profile. This dimensional extension allows the cleaning brushes to reach into tight spaces near walls and corners while the compact chassis maintains access to narrow areas, resolving the contradiction between debris collection capability and access to tight spaces
Data Source
AI summary
An autonomous coverage robot includes a chassis having forward and rearward portions and a drive system carried by the chassis. The forward portion of the chassis defines a substantially rectangular shape. The robot includes a cleaning assembly mounted on the forward portion of the chassis and a bin disposed adjacent the cleaning assembly and configured to receive debris agitated by the cleaning assembly. A bin cover is pivotally attached to a lower portion of the chassis and configured to rotate between a first, closed position providing closure of an opening defined by the bin and a second, open position providing access to the bin opening. The robot includes a body attached to the chassis and a handle disposed on an upper portion of the body. A bin cover release is actuatable from substantially near the handle.