Deformable Roller Brush Structure for Floor-Safe Cleaning Robots
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Solution Overview
Problem
Existing cleaning robots face issues with frictional force between the first cleaning assembly and the floor, leading to reduced cleaning effectiveness and potential damage to hard floors, due to the hardness of materials like pure wool or rubber brushes, and the elasticity of roller-elastic brushes failing to adapt to different floor pressures.
Innovation Solution
A cleaning robot design featuring a first cleaning assembly with a rotating shaft, mounting members, and a brush body comprising a brush portion and a deformable soft bag, which increases elastic expansion space to reduce frictional force and adapt to various floor materials, preventing scratches and extending the service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a pure wool brush or pure rubber brush is used as the first cleaning assembly, then the brush can maintain structural stability, but the hardness of the material causes it to scratch or damage hard floors and reduces air tightness at the suction port
Solution Approach 1:
The brush body is constructed as a composite structure combining a rigid rotating shaft with a deformable soft bag made of elastic material. This composite design integrates the structural stability of rigid materials with the floor-protecting and sealing properties of elastic materials, allowing the brush to maintain shape while adapting to floor surfaces without scratching hard floors or compromising air tightness
Solution Approach 2:
The soft bag portion of the brush body is designed with elastic properties that allow it to deform according to the pressure conditions of different floor materials. This parameter change capability enables the brush to adjust its contact pressure dynamically, maintaining effective cleaning contact while preventing damage to hard floors and ensuring proper air tightness at the suction port
2Reliability
If a roller-elastic brush is used to improve air tightness through material elasticity, then the brush can adapt to different floor materials, but the constant rubbing against the floor with fixed elasticity reduces service life
Solution Approach 1:
The brush body incorporates a soft bag that can dynamically deform based on the force conditions encountered during cleaning operations. This dynamic adaptability allows the elastic portion to adjust its compression and recovery cycles according to actual floor contact conditions, reducing constant friction wear and extending service life while maintaining reliable air tightness at the suction port
3Device complexity
If a pure wool brush is used, then the brush structure is simple, but the brush fails to contact the floor very well, resulting in poor air tightness and reduced cleaning effects
Solution Approach 1:
The brush body uses a soft bag made of elastic material that acts as a flexible component capable of conforming to the floor surface. This flexible structure improves contact between the brush and floor, ensuring proper air tightness at the suction port and enhancing cleaning effectiveness while maintaining relative structural simplicity through the integration of the soft bag with the rotating shaft
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 design effectively reduces frictional force between the cleaning assembly and the floor, enhances cleaning effectiveness, and extends the service life of the cleaning assembly while protecting different floor materials from damage.
Implementation Method 1
the soft bag is deformable according to a force condition of the brush portion
Data Source
AI summary
A cleaning robot including a body, a driving assembly for driving the cleaning robot to move, and a first cleaning assembly for cleaning a floor is disclosed. The first cleaning assembly includes a rotating shaft, mounting members mounted at both ends of the rotating shaft, a brush body provided outside the rotating shaft, and the rotating shaft is rotatable along with rotation of the mounting member, driving the brush body to clean the floor. The brush body includes a soft bag of an internal hollow structure and a brush portion extending outward from a surface of the soft bag, such that during cleaning, elastic space of the first cleaning assembly is increased, and a frictional force between the first cleaning assembly and the floor is reduced, thereby effectively protecting the floor and increasing the service life of the first cleaning assembly.