Mobile Robot Weight Distribution for Mopping Friction and Stability
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Solution Overview
Problem
Conventional mobile robots face challenges in maintaining effective friction for mopping, stability during operation, and efficiently cleaning corners and areas adjacent to walls due to limited friction force and uneven water distribution, leading to incomplete cleaning and difficulty in pattern driving.
Innovation Solution
The mobile robot design includes a configuration with a dust container positioned in front of the agitator, heavy components like batteries and motors placed on the spin mops to enhance friction, and a weight center positioned forward to improve stability, allowing for accurate pattern driving and efficient cleaning of larger debris.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the agitator is disposed at a front side than a dust container to increase the width of the agitator, then the cleaning range is improved, but the rotation of the robot cleaner becomes difficult and the volume of the robot cleaner increases
Solution Approach 1:
The patent inverts the conventional arrangement by positioning the dust container at the front side and the agitator at the rear side, rather than the traditional front-side agitator configuration. This inversion allows the agitator to achieve sufficient width for effective cleaning while maintaining the robot's ability to rotate easily at corners, resolving the contradiction between cleaning range and rotational ease
2Force
If heavy components like batteries and motors are placed on the spin mops to enhance friction force, then the mopping effectiveness is improved, but the stability of the robot body deteriorates
Solution Approach 1:
The patent applies local quality by strategically positioning heavy components (batteries and motors) specifically on the spin mops rather than distributing them throughout the body. This localized placement concentrates weight where it generates maximum friction benefit during mopping operations, while the overall body stability is maintained through the robot's structural design and support mechanisms
3Stability of the object's composition
If the weight center is positioned forward to improve stability, then the driving stability is improved, but the ability to clean corners and areas adjacent to walls deteriorates
Solution Approach 1:
The patent employs dynamics by making the weight center position adjustable rather than fixed. The weight center can be dynamically repositioned between a front position (for enhanced stability during straight-line driving) and a rear position (for improved cornering and wall-adjacent area cleaning). This dynamic adjustment capability allows the robot to optimize its performance characteristics based on the specific cleaning task and environment
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
This configuration increases friction force, enhances cleaning efficiency, and enables meticulous cleaning by allowing the robot to maintain stability and accurately navigate, ensuring thorough coverage of the floor including corners and areas adjacent to walls.
Implementation Method 1
a left spin mop and a right spin mop, each rotatably installed on the body and supporting the body
Implementation Method 2
an agitator rotatably assembled with the dust container and disposed at a rear side than a storage space
Data Source
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AI summary
The present disclosure discloses a mobile robot where a weight center of the mobile robot is positioned at an imaginary central longitudinal line, is positioned at a front side than an imaginary central horizontal line connecting a spin rotation axis of a left spin mop and a spin rotation axis of a right spin mop, is positioned at a front side than a weight center of a battery and a weight center of a water tank, and is disposed at a rear side than a weight center of a sweep module.