Adjustable Eyewear Strap System with Over- and Under-Ear Segmentation
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Solution Overview
Problem
Existing sleep masks often fall off due to poor fitting and discomfort caused by fixed, non-adjustable head straps that do not accommodate various head and ear shapes and sizes effectively.
Innovation Solution
A double-strap or triple-strap head strap system with over-ear, under-ear, and optional chin and hairline straps, secured with removable attachment means like hook-and-loop fabric, allowing for adjustable placement and orientation to fit different head sizes and ear positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed single head strap is used, then the device complexity is reduced, but the adaptability and fit for various head and ear shapes deteriorates
Solution Approach 1:
The head strap is divided into multiple separate straps (first strap, second strap, third strap, fourth strap) that can be independently adjusted and positioned. Each strap can be configured to wrap around different parts of the head and ears, allowing customization for various head shapes, ear positions, and sizes while maintaining manageable complexity through modular design.
2Ease of manufacture
If a fixed single head strap is used, then the ease of manufacture is improved, but the stability and preventability of slipping deteriorates
Solution Approach 1:
The single fixed strap is segmented into multiple adjustable straps that can be independently configured to create a more stable fit. The multiple straps work together to distribute force and prevent slipping, while each strap remains relatively simple to manufacture individually, maintaining ease of production through modular components.
Solution Approach 2:
The head strap system transitions from a single-dimensional fixed strap to a multi-dimensional adjustable configuration. The straps can be positioned at different heights, angles, and circumferences, creating a three-dimensional fit that adapts to the contours of the head and ears, thereby improving stability without significantly complicating manufacturing.
3Device complexity
If a fixed single head strap is used, then the device complexity is reduced, but the adjustability for various users deteriorates
Solution Approach 1:
The head strap system is segmented into multiple independent straps that can be individually adjusted in length, position, and configuration. This segmentation allows each strap to be customized for different user anatomies while the overall system remains manageable through modular design principles.
Solution Approach 2:
The head strap system incorporates dynamic adjustability where straps can be moved, repositioned, and reconfigured based on user needs. The attachment mechanisms allow for dynamic adjustment of strap positions and tensions, enabling the same device to adapt to various users without requiring multiple fixed-design variants.
4Adaptability or versatility
If multiple straps are used to improve fit, then the adaptability and stability are improved, but the device complexity increases
Solution Approach 1:
The complex fit requirement is solved by segmenting the head strap into multiple independent, standardized components. Each strap module is relatively simple in design but the combination of segments creates the necessary complexity for adaptive fitting. This modular segmentation allows for scalable complexity - starting with essential straps and adding optional ones as needed.
Solution Approach 2:
The multiple straps are designed with universal attachment mechanisms and standardized components that can be configured in various ways to serve different fitting needs. The same strap modules can be arranged differently to accommodate various head shapes, ear positions, and user preferences, reducing the need for multiple specialized strap designs and thereby managing overall system complexity.
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 adjustable strap system enhances the stability and comfort of eyewear by fully surrounding the ears, preventing slipping and chafing, and accommodating various user anatomies for improved fit and wearability.
Implementation Method 1
The hairline strap and chin strap are secured to the eyewear with removable attachment means such as hook-and-loop fabric.
Data Source
AI summary
A head strap system is designed to secure eye wear, such as a sleep mask, with optimal fit, comfort, and stability. The system provides over-ear straps and under-ear straps. On each side of the head, the over-ear strap and under-ear strap are each connected to a strap attachment, which is detachably and adjustably secured to a temple pad on the eye wear. The over-ear straps are each connected to an adjustable central elastic band. The under-ear straps are connected to left and right neck straps, which are temporarily secured together in order to wear the head strap system. The over-ear straps may be configured as arcs. An optional chin strap and/or hairline strap further secure the eyewear.