Single Drive Wheel Robotic Cleaner for Vertical Surface Navigation
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Solution Overview
Problem
Conventional robotic cleaners face challenges in effectively cleaning vertically extending surfaces and navigating obstacles without the use of additional side brushes, while also being compact and efficient in design.
Innovation Solution
A robotic cleaner with a D-shaped chassis and a single drive wheel that rotates about two axes, combined with a cleaning motor assembly capable of generating airflow and rotating an agitator, allows for efficient cleaning of vertically extending surfaces and navigation around obstacles without side brushes, using sensors for adaptive behavior and a crossflow blower for optimized airflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional robotic cleaners use multiple drive wheels and side brushes, then they achieve stable movement and cleaning coverage, but the device complexity and size increase
Solution Approach 1:
The patent combines multiple drive wheels into a single omnidirectional drive wheel that can rotate about two axes (drive axis and steering axis). This merging of functions allows the robot to achieve both forward motion and directional changes with one component, reducing overall device complexity while maintaining stable movement and cleaning effectiveness
Solution Approach 2:
The single drive wheel is designed with multi-functionality, serving both as a propulsion mechanism (rotating about drive axis) and a steering mechanism (rotating about steering axis). This universal component replaces the traditional separate drive and steering systems, reducing the number of parts while maintaining reliable navigation
2Device complexity
If robotic cleaners use additional side brushes, then they achieve better cleaning of vertically extending surfaces, but the device complexity and width increase
Solution Approach 1:
The patent addresses vertical surface cleaning by enabling the drive wheel to rotate about a steering axis, allowing the robot to tilt and engage vertical surfaces. This dimensional change in movement capability replaces the need for additional side brushes, maintaining cleaning effectiveness on vertical surfaces while reducing device complexity
Solution Approach 2:
Instead of adding more brushing components to clean vertical surfaces, the patent inverts the approach by using the drive wheel's dual-axis rotation to physically orient the cleaning head toward vertical surfaces. The cleaning action is achieved through the agitator and airflow system rather than additional brushes
3Volume of moving object
If robotic cleaners use a compact design with single drive wheel, then the size is reduced, but the cleaning width and effectiveness may be compromised
Solution Approach 1:
The patent employs dynamic movement capabilities through the dual-axis rotating drive wheel, allowing the compact robot to adapt its cleaning path and orientation in real-time. This dynamic navigation enables a small chassis to achieve effective cleaning coverage by optimizing its movement patterns rather than relying on physical size
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
The design enables effective cleaning of both horizontal and vertical surfaces with reduced noise and increased cleaning width, while maintaining a compact size and efficient navigation around obstacles, enhancing cleaning performance and adaptability.
Implementation Method 1
a cleaning motor assembly configured to cause the agitator to rotate and further configured to generate airflow within the agitator chamber
Implementation Method 2
using sensors for adaptive behavior and a crossflow blower for optimized airflow
Data Source
AI summary
A robotic cleaner may include a chassis, a single drive wheel rotatably coupled to the chassis, the single drive wheel being configured to rotate about a steering axis and a drive axis, an agitator chamber having an agitator rotatable therein, and a cleaning motor assembly configured to cause the agitator to rotate and further configured to cause air to flow into the agitator chamber.