Goggle Lens Retention via Sliding Clips
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Solution Overview
Problem
Existing goggle lens retention systems face challenges in securely engaging lenses to the frame while allowing easy replacement, resisting disengagement due to impacts or frame distortions, and preventing loss of parts, especially in harsh conditions where tools may not be available.
Innovation Solution
A goggle design featuring slidably engaged clips with a U-shaped end for mechanical retention and a locking mechanism that translates between engaged and disengaged positions, using a recessed ramp system to maintain secure engagement and prevent loss, allowing easy lens interchange without tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If frictional seal retention systems are used, then easy lens replacement is achieved, but lens security against impact and frame distortion is compromised
Solution Approach 1:
The retention system is divided into multiple independent clips distributed around the lens periphery, each providing localized mechanical retention. This segmentation allows the lens to be securely held at multiple points while still enabling easy release through individual clip actuation.
Solution Approach 2:
The clips are designed with resilient elements that allow dynamic movement between engaged and disengaged states. The resilient nature enables the clips to automatically return to the engaged position after lens insertion while allowing intentional disengagement when force is applied, combining security with ease of replacement.
2Reliability
If mechanical engagement systems with pins and clips are used, then lens security is improved, but ease of operation deteriorates due to complexity and risk of lost parts
Solution Approach 1:
The retention clip and retention element are merged into a single integrated component. The clip itself contains both the engagement element (that hooks onto the lens) and the retention mechanism (resilient element with latch feature), eliminating separate pins and reducing part count while maintaining security.
Solution Approach 2:
The resilient clip is designed to be self-retaining through its own elastic deformation and latch geometry. Once engaged, the clip automatically locks into position without requiring additional fasteners or tools, and can be released by applying force in the opposite direction, making the system self-servicing.
Data Source
AI summary
A locking mechanism to prevent unintentional disengagement of a goggle lens from its frame and allowing for easy changes of the lens when required. The locking mechanism employs translatable clips engaged to the frame which translate toward and away from the lens between engaged and disengaged positions. The engaged position locks the lens in place until the user translates the clip to the disengaged position. A post and slot engagement of each clip to the frame maintains them connected to the frame to prevent loss.