Sweeping assembly, cleaning appliance, and method for cleaning appliance
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Solution Overview
Problem
Existing cleaning appliances face issues with foreign matter, such as hair, entering the gap between the sweeping brush and housing, leading to increased friction, heat generation, and potential melting of plastic materials, causing appliance failure, as prior solutions inadequately prevent foreign matter entry and fail to promptly trigger protection measures.
Innovation Solution
A sweeping assembly with a toothed structure between the housing and sweeping brush, featuring multiple teeth that capture foreign matter and increase resistance to rotation, triggering overload protection and generating an indication signal when the resistance exceeds a threshold, thereby preventing foreign matter from entering the gap and avoiding material melting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a blocking structure is used to prevent foreign matter entry, then foreign matter prevention is improved, but device complexity increases and detection capability deteriorates
Solution Approach 1:
A detection member is introduced as an intermediary element between the blocking structure and the control system. This member detects the presence of foreign matter and transmits this information to the controller, enabling prompt detection without requiring complex structural modifications to the blocking mechanism itself.
Solution Approach 2:
The system implements a feedback loop where the detection member continuously monitors the gap region, and the controller receives this information to determine when foreign matter is present. This feedback mechanism enables automatic protection measures to be triggered based on actual conditions rather than requiring complex preventive structures.
2Productivity
If the sweeping brush rotates at high speed, then cleaning efficiency is improved, but heat generation increases leading to material melting
Solution Approach 1:
The detection member is positioned to detect foreign matter before it can cause significant friction and heat generation. By detecting the presence of foreign matter in advance, the system can trigger protection measures (such as reducing speed or stopping rotation) before the temperature rises to dangerous levels that would cause plastic melting.
Solution Approach 2:
The controller receives real-time feedback from the detection member about foreign matter presence and adjusts the sweeping brush rotation accordingly. When foreign matter is detected, the controller can reduce speed or stop rotation to prevent excessive heat generation, thus protecting the plastic materials from melting while allowing high-speed operation during normal cleaning.
3Reliability
If the gap between sweeping brush and housing is reduced, then foreign matter entry is prevented, but manufacturing precision requirements increase
Solution Approach 1:
The detection member serves as an intermediary that actively monitors the gap region for foreign matter. This eliminates the need to rely solely on a precisely controlled small gap for prevention, as the detection member can identify and alert to foreign matter presence even when the gap is relatively large, thereby reducing manufacturing precision requirements.
Solution Approach 2:
The patent replaces the purely mechanical approach of using a small gap to physically block foreign matter with a detection-based system. Instead of relying on the mechanical precision of gap dimensions to prevent entry, the detection member provides an active monitoring mechanism that can detect foreign matter regardless of the exact gap size, substituting mechanical precision requirements with detection capability.
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 toothed structure effectively captures foreign matter, preventing its entry into the gap and promptly triggering protection measures, reducing the risk of material melting and appliance failure by actively increasing resistance to rotation and alerting the user to clear the foreign matter.
Implementation Method 1
a toothed structure arranged close to an end of the sweeping brush, the toothed structure being provided between the housing and the sweeping brush and comprising multiple teeth
Implementation Method 2
friction can still generate a large amount of heat under the action of continuous rotation. Moreover, it is difficult to detect this small amount of foreign matter by existing techniques
Data Source
AI summary
The present invention relates to a cleaning appliance and a method for a cleaning appliance. In particular, a cleaning appliance is disclosed, comprising: a housing, comprising an opening facing toward a surface to be swept; a sweeping brush, having a connection part by means of which the sweeping brush is mounted in the housing, and being capable of rotating about a rotation axis by receiving a driving force, so as to perform a sweeping operation; and a toothed structure arranged close to an end of the sweeping brush, the toothed structure being provided between the housing and the sweeping brush and comprising multiple teeth, the multiple teeth extending from one of the housing and the sweeping brush toward the other of the housing and the sweeping brush. The cleaning appliance of the present invention is at least able to prevent or at least reduce the entry of foreign matter into a gap, as well as promptly trigger protection measures when necessary to remind a user to deal with the problem, in order to avoid failure due to melting of the housing and sweeping brush in a connection region.