Autonomous Coverage Robot Layout for Wall Edge and Corner Cleaning
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Solution Overview
Problem
Existing autonomous floor cleaning robots struggle to effectively clean along wall edges and in corners due to their cylindrical shape, which limits their ability to maneuver and clean in tight spaces.
Innovation Solution
A compact autonomous coverage robot with a rectangular front form factor and a cleaning mechanism positioned near the corners, allowing it to flush against walls and corners for efficient cleaning, combined with a navigational sensor system for autonomous operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a cylindrical shape is used for the robot, then the robot can maneuver around obstacles freely, but the robot cannot clean effectively along wall edges and in corners
Solution Approach 1:
The robot transitions from a symmetric cylindrical shape to an asymmetric design with a rectangular front section and a rounded rear section. This asymmetric shape allows the rectangular front to align with wall edges and corners for effective cleaning, while the rounded rear maintains maneuverability around obstacles.
Solution Approach 2:
Different parts of the robot have different geometric properties: the front section is rectangular to enable wall and corner cleaning, while the rear section is rounded to facilitate maneuvering. This local differentiation of geometric properties allows the robot to simultaneously achieve both cleaning effectiveness and maneuverability.
2Adaptability or versatility
If a rectangular front form factor is used, then the robot can clean along wall edges and in corners, but the robot may have difficulty maneuvering around obstacles
Solution Approach 1:
The robot body is segmented into two distinct geometric sections: a rectangular front portion for cleaning and a rounded rear portion for maneuvering. This segmentation allows each section to fulfill its specific functional requirement without compromising the other.
Solution Approach 2:
The asymmetric design combines a rectangular front with a rounded rear, where each geometric form serves its specific purpose. The rectangular front enables wall and corner cleaning, while the rounded rear maintains the ability to maneuver around obstacles smoothly.
3Adaptability or versatility
If the cleaning mechanism is positioned centrally, then the robot structure is simplified, but the robot cannot effectively clean in corners and along wall edges
Solution Approach 1:
The cleaning mechanism is positioned at the front corners of the robot rather than centrally, matching the rectangular front geometry. This localized positioning of the cleaning mechanism at the corners enables effective cleaning in corner and wall edge areas.
Solution Approach 2:
The cleaning mechanism positioning reflects the asymmetric shape of the robot, with cleaning elements located at the front corners corresponding to the rectangular section, enabling the robot to clean effectively in areas that require corner access.
Data Source
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AI summary
An autonomous coverage robot (100, 101) includes a chassis (200) having forward and rearward portions (210, 220) and a drive system (400) carried by the chassis (200). The forward portion (210) of the chassis (200) defines a substantially rectangular shape. The robot (100, 101) includes a cleaning assembly (500) mounted on the forward portion (210) of the chassis (200) and a bin (620) disposed adjacent the cleaning assembly (500) and configured to receive agitated debris. A bin cover (620) is pivotally attached to a lower portion (203) of the chassis (200) and configured to rotate between a first, closed position providing closure of an opening (612) defined by the bin (610) and a second, open position providing access to the bin opening (612). The robot (100, 101) includes a body (300) attached to the chassis (200) and a handle (330) disposed on an upper portion (305) of the body (300). A bin cover release (630) is actuatable from substantially near the handle (330).