Adjustable Eyewear Retention Device with Cable Guides
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Solution Overview
Problem
Existing eyewear retention devices fail to securely hold glasses against the user's face during rigorous activities, lacking adjustability to accommodate changing needs.
Innovation Solution
An adjustable eyewear retention device featuring two cables with temple retainers and adjustable guides and tabs that allow for sliding passage, enabling the arc shape to be adjusted for secure fitting and easy detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the retention device uses a fixed cable length design, then the structure is simple, but the device cannot be adjusted to accommodate different users or activities
Solution Approach 1:
The patent applies the dynamics principle by making the cable length adjustable rather than fixed. The cables incorporate tabs that can be repositioned along the cable length, allowing the arc configuration to be dynamically adjusted. This enables the same device to accommodate different users and activity requirements while maintaining a relatively simple overall structure.
2Reliability
If the retention device uses a fixed arc configuration, then the manufacturing is simple, but the device cannot securely hold glasses during rigorous activities for all users
Solution Approach 1:
The arc configuration is made dynamic through the adjustable tab mechanism. Users can reposition the tabs to change the cable length and arc shape, allowing the device to be customized for secure holding during various activities. The manufacturing remains relatively simple as it only requires adding the tab components to the existing cable structure, without complex assembly processes.
3Shape
If the cables are kept in close proximity with guides, then the arc shape is maintained, but the cables may interfere with each other or garments
Solution Approach 1:
The patent resolves the interference issue by using guides with tunnels that allow one cable to pass through another cable in a different spatial dimension. This vertical stacking arrangement within the guide tunnels keeps the cables organized and prevents lateral interference with garments while maintaining the desired arc shape. The cables are confined to specific pathways that prevent tangling.
Data Source
AI summary
An adjustable eyewear retention device having twocomprising a resilient elongate member adjustable in length, such as a pair of cables, twoand a pair of temple retainers connected to one another by the elongate member, guiding means and grasping means which allow adjustment of the device to the dimensions of a user's head. In another embodiment, the guiding means is eliminated and the cables are connected by means of the grasping meanssuch that when the temple retainers are attached to the temples of a pair of eyeglasses and the eyeglasses are worn by a wearer, the resilient member forms an arc suspended off the wearer's neck.