Segmented Cleaning Pad Structure for Even Debris Pickup
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cleaning pads for autonomous robots often lead to debris hot spots and increased adhesion to the floor, requiring abrasive layers and higher torque for movement, which can result in scratching and increased manufacturing costs.
Innovation Solution
A cleaning pad with varying thickness across its width, featuring a thinner forward portion and a thicker aft portion, designed to collect debris evenly and reduce adhesion by allowing air to pass beneath, eliminating the need for abrasive layers and reducing torque requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a cleaning pad has constant thickness, then it is simple to manufacture, but it causes debris hot spots and uneven debris collection
Solution Approach 1:
The cleaning pad employs varying thickness across different regions, with the forward portion being thinner and the aft portion being thicker. This local quality variation allows debris to be collected more uniformly across the pad surface, preventing debris hot spots while maintaining a relatively simple overall structure.
2Object-affected harmful factors
If a cleaning pad has constant thickness, then it maintains simple structure, but it increases adhesion to the floor surface
Solution Approach 1:
The pad's varying thickness creates regions with different adhesion characteristics. The thinner forward portion reduces overall adhesion to the floor surface, allowing air to pass beneath more effectively and reducing the suction effect that causes the pad to stick to the floor.
Solution Approach 2:
The varying thickness design facilitates air flow beneath the pad by creating pressure differentials. The thinner forward portion allows air to more easily pass through, reducing the vacuum effect and adhesion between the pad and floor surface.
3Object-generated harmful factors
If a cleaning pad has constant thickness, then it requires uniform material usage, but it pushes fluid and debris across the floor surface
Solution Approach 1:
The non-uniform thickness distribution creates different functional zones: the thinner forward portion allows debris to pass through more easily, while the thicker aft portion collects and retains debris. This prevents the pad from pushing debris across the floor and forming piles.
4Force
If a cleaning pad has constant thickness, then it requires uniform construction, but it increases torque requirements for movement
Solution Approach 1:
The varying thickness reduces the overall mass and adhesion force of the pad, particularly in the forward portion. This decreases the friction and resistance during movement, thereby reducing the torque required by the robot to move the pad across the floor surface.
5Object-affected harmful factors
If a cleaning pad uses abrasive layer, then it reduces adhesion to floor surface, but it causes scratching and scuffing of floor surface
Solution Approach 1:
The varying thickness design inherently reduces adhesion through geometric configuration rather than requiring abrasive materials. This eliminates the need for expensive abrasive layers while preventing floor surface damage, as the softer pad material cannot scratch or scuff the floor.
Solution Approach 2:
The design converts what would normally be a harmful effect (adhesion causing resistance) into a beneficial feature by using varying thickness to control air flow and reduce suction. This eliminates the need for abrasive layers that would otherwise be required to manage adhesion, thereby protecting the floor surface.
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 pad effectively collects debris without leaving piles on the floor, reduces adhesion, and lowers manufacturing costs by allowing a softer exterior surface, enhancing cleaning efficiency and reducing the risk of scratching.
Implementation Method 1
a core of absorbent layers for absorbing liquid through capillary action and for distributing the liquid within a cleaning pad
Implementation Method 2
a wrap layer around the core, the wrap layer comprising a fibrous layer that is flexible and absorbent, the fibrous layer configured to absorb liquid through capillary action and transfer the liquid to the core
Data Source
AI summary
A cleaning pad for an autonomous cleaning robot evenly wets and collects debris for cleaning operations. The pad includes a core of absorbent layers for absorbing liquid through capillary action and for distributing the liquid within the cleaning pad. The pad includes a wrap layer around the core, the wrap layer comprising a fibrous layer that is flexible and absorbent, the fibrous layer configured to absorb liquid through capillary action and transfer the liquid to the core. The pad includes one or more transition regions spanning a cleaning width of the cleaning pad, the one or more transition regions dividing the cleaning pad into at least two segments. The forward positioned segment of the pad, of the at least two segments of the pad, has a lesser thickness compared to a thickness of an aft positioned segment of the at least two segments.