Elastic Sealing Duster Cloth for Vacuum-Adhering Cleaning Robots
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Solution Overview
Problem
The existing duster cloths used in cleaning robots suffer from poor air-tightness, leading to negative pressure leakage, which compromises the robot's ability to adhere firmly to surfaces like glass, due to their high air permeability.
Innovation Solution
A duster cloth with an elastic sealing layer made of foamed EPDM material, integral skin sponge, or a common sponge with a sealing film, integrated between the wiping cloth and the detachable connection part, enhances air-tightness and elasticity, preventing air leakage and improving adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a common sponge is used as the duster cloth, then the compression property is good, but the air permeability is too high causing negative pressure leakage
Solution Approach 1:
The patent uses a composite structure combining a sponge base layer with a sealing film layer. The sponge provides compression and deformation capability while the sealing film layer (made of materials like fluorinated ethylene propylene rubber, ethylene propylene diene monomer rubber, or silicone rubber) provides the necessary air-tightness. This composite material approach resolves the contradiction by integrating the advantages of both materials.
Solution Approach 2:
The patent introduces a flexible sealing film layer that can deform with the sponge while maintaining air-tightness. This thin film structure allows the duster cloth to adapt to surface contours through sponge deformation while the film prevents air leakage, thus solving the contradiction between compression property and air-tightness.
2Adaptability or versatility
If the duster cloth has high air permeability for flexibility, then the elasticity is good, but the negative pressure leakage occurs
Solution Approach 1:
The sealing film layer is designed to be flexible and deformable, allowing it to conform to various surface shapes while maintaining air-tightness. The film's flexibility ensures the duster cloth can adapt to different cleaning surfaces, while its sealing property prevents air leakage during operation.
Solution Approach 2:
The combination of elastic sponge material with flexible sealing film creates a composite structure that maintains both elasticity and air-tightness. The sponge provides the elastic deformation capability while the film prevents air permeation, resolving the contradiction between adaptability and reliability.
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 improved air-tightness and elasticity of the duster cloth ensure a stronger vacuum seal, allowing the cleaning robot to adhere more securely to surfaces, effectively addressing the issue of negative pressure leakage.
Implementation Method 1
The duster cloth comprises a layer of wiping cloth in contact with a surface to be cleaned, a detachable connection part close to a base of the robot and an elastic sealing layer located between the wiping cloth and the detachable connection part
Implementation Method 2
The negative pressure chamber 400 is vacuumized via a fan 4 so as to adsorb the machine onto the surface of the glass
Data Source
AI summary
The present invention relates to a duster cloth for a cleaning robot and a cleaning robot using the duster cloth. The duster cloth comprises a detachable connection part (21) close to a base of the robot, a wiping cloth (22) close to a surface to be cleaned, and an elastic sealing layer located between the detachable connection part (21) and the wiping cloth (22). The elastic sealing layer is attached to both the detachable connection part (21) and the wiping cloth (22). The elastic sealing layer is made from a foamed EPDM material (23), an integral skin sponge (33) or a common sponge (43), wherein a sealing film (24) is arranged on at least one side of the common sponge (43). The detachable connection part (21) may be a Velcro. With the structure of the elastic sealing layer between the detachable connection part and the wiping cloth, the duster cloth has good elasticity, and the air-tightness of the negative pressure chamber of the cleaning robot is greatly improved.