Robotic cleaner
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Solution Overview
Problem
Robot cleaners face challenges with driving performance and cleaning efficiency due to height differences in various floor types, leading to suction nozzle sticking and reduced friction between wheels and the floor.
Innovation Solution
The robot cleaner is equipped with a suction nozzle that includes guide protrusions, which are accommodated in guide holders within the cleaner body. These components allow the suction nozzle to ascend, descend, and swing, adapting to changes in floor height and maintaining surface pressure for effective suction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the suction nozzle is fixed in close contact with the floor, then cleaning performance is improved, but the suction nozzle gets stuck on height differences causing reduced driving performance
Solution Approach 1:
The suction nozzle is designed with dynamic movement capability through guide protrusions and guide grooves that allow the nozzle to ascend and descend relative to the cleaner body. This enables the suction nozzle to adapt to height differences in floor surfaces while maintaining cleaning contact, resolving the contradiction between fixed contact for cleaning performance and adaptability for driving performance.
2Reliability
If the suction nozzle ascends or descends to adapt to floor height changes, then driving performance is improved, but cleaning performance may be reduced due to loss of surface contact
Solution Approach 1:
The suction nozzle is segmented from the cleaner body through the guide protrusion-guide groove mechanism, allowing independent vertical movement. This segmentation enables the suction nozzle to maintain optimal contact with the floor surface while the cleaner body navigates height differences, preserving both driving performance and cleaning performance.
3Adaptability or versatility
If the suction nozzle is designed to be movable to avoid sticking, then adaptability to floor changes is improved, but device complexity increases
Solution Approach 1:
The guide protrusions and guide grooves are designed to enable automatic self-adjustment of the suction nozzle position based on floor height variations. The structure utilizes the interaction between the protrusions and grooves to naturally guide the ascent and descent movements without requiring external actuators or complex control systems, thereby achieving adaptability with minimal added complexity.
Data Source
Figure 1~2
Figure 3
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AI summary
The present invention relates to a robotic cleaner comprising: a cleaner body which has a plurality of guide holders provided therein and performs self-driving; and a suction nozzle which receives an agitator therein, has guide protrusions longitudinally protruding from both sidewalls thereof toward the plurality of guide holders and received in the plurality of guide holders, respectively, and is up-and-down movably and back-and-forth swingably mounted to the cleaner body, whereby the driving performance and cleaning performance of the cleaner can be improved.