Cleaning Robot Rear-End Swing Motion to Eliminate Obstacle Blind Zones
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Solution Overview
Problem
Conventional cleaning robots create a blind zone between their mopping module and obstacles, leading to incomplete cleaning along edges.
Innovation Solution
The cleaning robot employs multiple turning motions and backswings at its rear end to reach and clean the blind zone, with control mechanisms ensuring partial overlap of cleaning zones and adjustments based on obstacle distance and turning radius.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cleaning robot travels along an obstacle with a fixed cleaning member arrangement, then the cleaning robot can maintain stable movement, but a blind zone is formed between the cleaning member and the obstacle that cannot be cleaned
Solution Approach 1:
The cleaning robot applies dynamic motion to the cleaning member, enabling it to perform multiple turning motions towards the obstacle and multiple backswings away from the obstacle. This dynamic adjustment allows the cleaning member to reach into the previously inaccessible blind zone while maintaining stable overall movement of the robot
Solution Approach 2:
The cleaning process is segmented into multiple discrete turning motions and backswings rather than a continuous linear movement. Each turning motion and backswing constitutes a separate cleaning cycle that collectively covers the entire blind zone area
2Device complexity
If the cleaning member is positioned at the rear end of the cleaning robot, then the robot can maintain a compact structure, but a blind zone is formed that cannot be cleaned
Solution Approach 1:
Instead of repositioning the cleaning member to eliminate the blind zone structurally, the patent applies dynamic turning motions and backswings to the rear-end cleaning member, enabling it to dynamically reach the obstacle and clean the blind zone while maintaining the compact rear-end configuration
3Productivity
If the cleaning robot performs multiple turning motions and backswings to clean the blind zone, then the cleaning coverage is improved, but the cleaning time increases
Solution Approach 1:
The cleaning robot performs periodic turning motions and backswings in a rhythmic sequence. Each cycle consists of turning towards the obstacle for cleaning, then backswinging away, creating a periodic action pattern that systematically covers the blind zone while maintaining efficient timing
Solution Approach 2:
The turning motions and backswings are performed during continuous travelling of the cleaning robot without stopping the overall forward movement. This ensures that the useful cleaning action continues uninterrupted while the robot progresses through the cleaning area
Data Source
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AI summary
A cleaning method of a cleaning robot includes, when the cleaning robot travels along an obstacle, driving a rear end of the cleaning robot, on which a cleaning member is arranged, to make multiple turning motions towards the obstacle and multiple backswings away from the obstacle, thereby cleaning a blind zone of the cleaning robot relative to the obstacle. In such a way, blind zones are cleaned when cleaning along obstacles.