Face Shield Adjustable Tensioning for Affordable Secure Fit
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Solution Overview
Problem
Existing face shields lack affordability, adjustability, and stability, making them impractical for widespread distribution and effective use.
Innovation Solution
A face shield system featuring a face shield sheet with reinforcement tabs, a head mount, and a cinch strap with teeth that engage with mounting holes for adjustable tensioning, ensuring secure fit and reusability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If inexpensive materials and simple construction are used for face shields, then cost is reduced, but fit and stability deteriorate
Solution Approach 1:
The face shield incorporates an adjustable strap system with multiple attachment points and a sliding mechanism that allows dynamic adjustment of strap tension and positioning. This enables the same inexpensive shield design to adapt to different head sizes and shapes, achieving reliable fit without requiring expensive custom-molded solutions for each user.
Solution Approach 2:
The invention changes the parameters of the strap system by providing multiple attachment points at different locations and heights on the shield frame. This allows adjustment of the geometric parameters of the strap configuration to achieve optimal fit for different users, transforming a static design into an adjustable one that maintains reliability across diverse populations.
2Device complexity
If fixed strap design is used, then device complexity is reduced, but adaptability to different users deteriorates
Solution Approach 1:
The strap system is designed with multiple attachment points and adjustment mechanisms that enable a single strap assembly to serve multiple functions: it can accommodate different head circumferences, adjust to various user preferences for tightness, and adapt to different positioning requirements. This universal design eliminates the need for multiple different shield models.
Solution Approach 2:
The strap system is segmented into multiple components including adjustable straps, multiple attachment points on the frame, and a sliding mechanism. This segmentation allows independent adjustment of each component to achieve the desired fit, providing versatility without requiring an overly complex integrated system.
3Ease of manufacture
If non-adjustable straps are used, then ease of manufacture is improved, but reliability of fit deteriorates
Solution Approach 1:
The shield is pre-assembled with attachment points and strap components in place during manufacturing, but the final adjustment and securing actions are reserved for the end user. This preliminary assembly ensures consistent quality control during production while allowing individual users to perform the final adjustment to achieve a secure fit specific to their needs.
Data Source
AI summary
A face shield system and associated method are disclosed, the face shield system comprising a face shield sheet, at least one shield clip, at least one reinforcement tab affixed to the face shield sheet, a head mount, and a cinch strap inserted through at least one mounting hole in the face shield sheet.