Brush for a self-propelled soil cleaning device
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Solution Overview
Problem
Existing brushes for self-propelled floor treatment devices have insufficient cleaning performance and drive-over properties due to limited vertical mobility of brush arms, which results in inadequate cleaning of corners and wall areas and difficulty navigating obstacles like cables or deep-pile carpets.
Innovation Solution
The brush arm design allows for vertical and horizontal mobility, with notches and a varying circumference to enhance flexibility, enabling independent movement of each arm and improved interaction with floor objects, allowing for increased cleaning performance and safe navigation over obstacles without getting stuck.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of brush arms is increased to improve cleaning performance, then cleaning performance is improved, but the risk of the device getting stuck on obstacles increases
Solution Approach 1:
The brush arm is designed with vertical mobility capability, allowing it to dynamically adjust its position relative to the floor surface. During normal cleaning operation, the brush arm maintains contact with the floor surface. When an obstacle is encountered, the brush arm can deflect vertically to accommodate the obstacle, preventing the device from getting stuck. This dynamic behavior enables the system to safely operate with multiple brush arms.
2Reliability
If brush arms are designed with vertical mobility to improve drive-over properties, then drive-over properties are improved, but cleaning performance decreases due to reduced contact stability
Solution Approach 1:
The brush arm structure incorporates localized flexibility features (notches) in specific regions while maintaining structural integrity in other areas. The notches are positioned to enable vertical deflection when encountering obstacles, but the overall brush arm design ensures sufficient stiffness to maintain cleaning contact with the floor surface during normal operation. This localized quality differentiation allows the brush arm to simultaneously achieve both drive-over capability and cleaning effectiveness.
3Stability of the object's composition
If brush arms are made rigid to prevent knotting of cleaning elements, then cleaning element stability is improved, but flexibility and mobility are reduced
Solution Approach 1:
The brush arm is divided into multiple structural sections with different mechanical properties. The proximal portion (near the brush core) is designed with higher stiffness to prevent excessive deflection and maintain cleaning element stability. The distal portion (near the cleaning element) incorporates notches and geometric features that provide localized flexibility, enabling vertical mobility when obstacles are encountered. This segmentation allows the brush arm to simultaneously achieve structural stability and adaptive mobility.
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 enhanced mobility of brush arms improves cleaning performance and drive-over capabilities, enabling effective cleaning of corners and obstacles while preventing jamming and ensuring safe operation over various floor surfaces.
Implementation Method 1
If the self-propelled soil tillage device runs over such an object with the brush, a moment of force is transmitted via the cleaning element to the brush arm. As a result of this power transmission, the brush arm is deflected vertically
Implementation Method 2
The brush arm has at least one notch. The indentations cause a partial reduction in the strength of the brush arms. In other words, the flexibility of the brush arms in one direction of movement is increased.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a brush for a self-propelled soil cultivation device, with a brush core on which a brush arm is arranged, wherein a cleaning element is arranged in the brush arm.