One-Hand Folding Mat Layout That Keeps the Top Surface Clean
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Solution Overview
Problem
Conventional mats for outdoor use are bulky, inefficiently designed for folding, and fail to maintain a clean top surface during storage and reuse, often transferring dirt from the bottom to the top, and require two-handed folding, making them inconvenient for outdoor activities.
Innovation Solution
A foldable mat with a combination of nine upper surface panels of hard neoprene or EPDM rubber, a durable rubber-based substrate, and a specific folding sequence that keeps the clean top surface separate from the dirty bottom surface, allowing for one-handed folding and compact storage, using a mud-flap to complete the folding sequence without exposing dirty surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a mat is made sturdy and thick for durability, then strength and durability are improved, but the mat becomes bulky and difficult to fold compactly
Solution Approach 1:
The mat is divided into multiple panels (typically 9 panels arranged in a 3x3 grid) separated by flexible separations. This segmentation allows the mat to fold compactly while maintaining durability, as each panel can be independently folded without requiring the entire mat to be thick and bulky.
2Length of moving object
If a mat is folded traditionally, then portability is improved, but dirt transfers from the bottom surface to the top surface
Solution Approach 1:
The mat is designed to fold in reverse of conventional folding methods. Instead of folding the dirty bottom surface against the clean top surface, the mat folds the top surface against itself and the bottom surface against itself, keeping them separate. This inversion prevents dirt transfer while maintaining portability.
Solution Approach 2:
The mat features differentiated local qualities with distinct top and bottom surfaces that have different functions. The top surface is designed to remain clean for user contact, while the bottom surface contacts the ground. The folding mechanism ensures each surface maintains its designated function by preventing cross-contamination during storage.
3Stability of the object's composition
If a mat requires two-handed folding, then folding stability is improved, but ease of operation deteriorates
Solution Approach 1:
The mat incorporates dynamic folding characteristics with flexible separations between panels that allow easy bending and folding. The separations are designed to be sufficiently flexible to enable one-handed operation while maintaining structural integrity during the folding process, resolving the contradiction between stability and ease of operation.
4Weight of moving object
If a mat is made lightweight for portability, then weight is improved, but the mat sticks to footwear and equipment
Solution Approach 1:
The mat utilizes parameter changes in material properties, specifically using materials with appropriate friction characteristics. The bottom surface is designed with controlled friction properties that prevent sticking to footwear and equipment while remaining lightweight, achieving both portability and reduced harmful adhesion effects.
Data Source
AI summary
A portable mat which keeps itself clean teaches a combination of nine upper surface panels of hard rubber, EPDM, hard neoprene, a very durable bottom surface/substrate holding the mat panels, which may be the neoprene in unitary body embodiments or a separate material in other embodiments, a formula for placement of the panels upon the substrate, a specific folding sequence, and a tenth mud-flap outside of the regular 3×3 pattern of the other nine panels which completes the folding sequence with every bottom surface covered by another bottom surface and no top panel in contact with any bottom surface. A handhold at one corner and indicia on the top surface assist the user in properly folding, as do the formulaic gaps which allow tight proper folding and prevent improper folding.