Kerf-like Slotted Spring Lock for Interchangeable Eyeglass Lenses
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Solution Overview
Problem
Existing eyeglass and sunglass technologies lack versatility and cost-effectiveness for multi-purpose use, particularly in sports settings where quick lens changes are necessary without compromising precision and durability.
Innovation Solution
A frame with a kerf-like slotted spring lock mechanism that allows for easy insertion and secure retention of interchangeable lenses, utilizing a relief mechanism with latches and detents to lock the lenses in place, enabling quick changes and secure positioning during athletic activities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional fixed lens frame is used, then structural simplicity is maintained, but versatility and adaptability for different lens types are lost
Solution Approach 1:
The frame is divided into a receptor portion and a lock mechanism that can independently interact with lens connectors. The lock is segmented into upper and lower portions that can move relative to each other, allowing the frame to transition between locked and unlocked states while maintaining overall structural integrity.
Solution Approach 2:
The lock mechanism incorporates dynamic elements including spring-loaded components and movable lock portions that can shift position based on applied force. The spring biasing system allows the lock to automatically return to its engaged position after lens insertion, providing adaptive locking without manual intervention.
2Reliability
If a secure locking mechanism is implemented, then lens retention during athletic activities is improved, but ease of lens removal and replacement deteriorates
Solution Approach 1:
The spring-loaded lock mechanism pre-positions the lock portions in a ready-to-engage state, automatically capturing the lens connector upon insertion. This preliminary positioning ensures secure retention without requiring additional locking actions during athletic activities.
Solution Approach 2:
The kerf-like slots are pre-formed in the frame walls to guide and facilitate the movement of the lock portions during lens insertion. These pre-configured pathways reduce the force and complexity required for lens removal and replacement by providing predetermined movement paths.
3Strength
If precision manufacturing is applied to ensure durability, then product strength is improved, but manufacturing cost increases
Solution Approach 1:
The lock mechanism utilizes flexible spring elements and thin-walled receptor structures that provide durability through elastic deformation rather than rigid reinforcement. This approach maintains strength while reducing material usage and manufacturing complexity compared to fully rigid precision components.
Solution Approach 2:
The design employs geometric parameters such as kerf-like slot dimensions and spring wire diameters that can be adjusted through standard manufacturing tolerances rather than requiring precision machining. This allows durable performance to be achieved through parameter optimization within conventional manufacturing capabilities.
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 solution provides a versatile and cost-effective means for switching between different lens types, ensuring secure retention even during athletic activities, while allowing for easy removal and replacement of lenses with varying tints, prescriptions, and shapes.
Implementation Method 1
The kerf-like slots in the walls of the receptor enable the lock to be forced open thereby allowing the insertion of the connector of the lens element
Data Source
AI summary
A glasses structure that receives a variety of lens element types including full-frame, half-frame and frameless lens elements. A temple that receives a connector on the lens element includes a kerf-like slotted spring lock, that releases under pressure to allow the insertion of the lens element and once inserted, provides sufficient force to retain the lens element in position even during athletic activity. The lock includes an interior space that includes latches. The lens element includes catches and detents that correspond to the latches. In operation, the lock is forced into the open position as the catches of the lens element are forced to the backside of the latches, and as the lock closes, the latches are forced into the detents thereby securing the lens to the lock.