Suction nozzle and cleaner
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Solution Overview
Problem
Existing suction nozzles face issues with dirt, such as hairs, winding around the rotary cleaning unit or getting stuck between the unit and its holder, leading to increased channel resistance and potential damage.
Innovation Solution
The implementation of an anti-winder mechanism with contact parts mounted on the nozzle body that overlap the side ends of the cleaning elements, preventing dirt from winding and reducing channel resistance while allowing for easy replacement of damaged parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a rotary cleaning unit is used to clean the floor, then cleaning effectiveness is improved, but dirt such as hairs winds around the rotary cleaning unit or gets stuck between the unit and holder
Solution Approach 1:
The patent introduces an anti-winder component as an intermediary element between the rotary cleaning unit and the holder. This anti-winder prevents dirt from winding around the rotary cleaning unit by providing a barrier that guides dirt away from the rotation path, thereby maintaining cleaning effectiveness while eliminating the harmful winding effect.
Solution Approach 2:
The suction nozzle is divided into separable components including the holder, rotary cleaning unit, and anti-winder. This segmentation allows the anti-winder to be independently designed and optimized for preventing dirt winding, while also enabling easy replacement and maintenance of individual components based on their specific wear patterns.
2Object-affected harmful factors
If brushes are accommodated inside a blocking rib to prevent dirt winding, then dirt winding is reduced, but channel resistance increases
Solution Approach 1:
The anti-winder acts as an intermediary component that prevents dirt winding without requiring the brushes to be enclosed within a blocking rib structure. By positioning the anti-winder strategically, it guides dirt away from the rotary cleaning unit while maintaining open airflow paths, thus preventing dirt winding without increasing channel resistance.
3Object-affected harmful factors
If the anti-winder is permanently fixed to the nozzle body, then prevention of dirt winding is maintained, but replacement of worn anti-winders becomes difficult
Solution Approach 1:
The anti-winder is designed as a separate, detachable component from the holder and rotary cleaning unit. This segmentation enables the anti-winder to be easily removed and replaced when worn, while still maintaining its function as an effective barrier against dirt winding during operation. The separable design allows for independent replacement of the anti-winder without disassembling other components.
4Device complexity
If the suction nozzle components are integrated as a single unit, then structural simplicity is achieved, but replacement of damaged parts requires complete disassembly
Solution Approach 1:
The suction nozzle is designed with separable components including the holder, rotary cleaning unit, and anti-winder that can be independently removed and replaced. This segmentation maintains relative structural simplicity while enabling selective replacement of damaged components such as the rotary cleaning unit or anti-winder without requiring complete disassembly of the entire suction nozzle assembly.
Data Source
AI summary
A suction nozzle includes a nozzle body including a suction port. The suction nozzle also includes a rotary cleaning unit rotatably mounted in the nozzle body and having a cleaning element for cleaning a floor. Additionally, the suction nozzle includes an anti-winder mounted on the nozzle body and having a plurality of contact parts that overlap a side end of the cleaning element along at least a portion of a rotational path followed by the cleaning element of the rotary cleaning unit when the rotary cleaning unit is rotated.