Frameless Glasses Pivot Fasteners for Tool-Free Lens Swapping
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Solution Overview
Problem
Existing glasses designs, particularly frameless types, lack interchangeable lens structures, leading to financial burden and inconvenience due to the need for multiple pairs for different functions and storage challenges.
Innovation Solution
A pair of glasses with interchangeable lenses featuring pivot fasteners and mounting bases that allow lenses to be easily replaced without tools, using a stopper and mounting hole mechanism for secure attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional frameless glasses have temples directly connected to both sides of the lens, then the structure is simple and stable, but the lenses cannot be replaced
Solution Approach 1:
The temple is segmented into a fixed portion and a movable pivot fastener portion. The pivot fastener can rotate between a folded position (for lens installation/removal) and an unfolded position (for temple support), enabling lens replacement while maintaining structural integrity.
Solution Approach 2:
The pivot fastener introduces dynamic movement capability to the traditionally static temple-lens connection. By rotating between folded and unfolded positions, the fastener dynamically adapts between lens replacement mode and wearing support mode.
2Adaptability or versatility
If existing glasses have replaceable lens structures, then lenses can be replaced, but the structure is complex and not suitable for frameless glasses
Solution Approach 1:
The pivot fastener serves multiple functions: it acts as a lens replacement mechanism, a temple support structure, and a user interface for operation. This multi-functionality eliminates the need for separate replacement mechanisms in frameless glasses.
Solution Approach 2:
The limiting portion and stopper create a self-locking mechanism that automatically secures the temple in the unfolded position without additional fasteners or complex assembly steps, enabling easy user operation.
3Adaptability or versatility
If multiple pairs of glasses are owned for different functions, then various eye protection needs are met, but financial burden and storage problems increase
Solution Approach 1:
A single pair of glasses can accommodate multiple lens types (prescription, sunglasses, blue light blocking) through the interchangeable lens system, replacing the need for multiple separate glasses pairs for different functions.
Data Source
AI summary
Provided is a pair of glasses with interchangeable lenses, including a lens, two pivot fasteners and a wearing piece. A mounting base is provided on both sides of the lens. A mounting base is provided with a stopper at the front section and a mounting hole at the rear section. A limiting portion is provided at the front section of each pivot fastener, and a mounting shaft extending downward is provided. Each pivot fastener is detachably inserted into the mounting hole by the mounting shaft. Each pivot fastener is pivoted relative to the mounting base between an unfolded position and a folded position by the mounting shaft as the axis, and the wearing piece is connected to the rear section of each pivot fastener. When each pivot fastener is pivoted to the unfolded position, the limiting portion is pivoted and forced into the inner surface of the stopper to be fixed. When each pivot fastener is pivoted to the folded position, the limiting portion is pivoted out of the stopper, and each pivot fastener is operable to disengage the mounting shaft from the mounting hole, such that each pivot fastener can be detached from the mounting base.