Lens Exchanging Structure for Tool-Free Spectacle Frame Assembly
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Solution Overview
Problem
Existing spectacle lens exchange systems require specialized tools, are prone to damage, and are inconvenient for users, especially the elderly, due to small screws and fine threads, making lens replacement difficult and costly.
Innovation Solution
A lens exchanging structure that allows for tool-free removal and installation of lens frames by manipulating the fixing parts and positioning slots of the spectacle frame, using elastic components and toggle sheets to securely attach and detach lenses without damaging the frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional screws and screwdrivers are used to attach lenses to spectacle frames, then the lenses can be securely fixed, but the operation becomes complex and damaging due to small screws, fine threads, and specialized tools required
Solution Approach 1:
The fixing part is divided into a head portion and a shaft portion, with the head portion engaging a slot in the lens frame. This segmentation allows the fixing mechanism to be manipulated by simply moving the head portion along the slot, eliminating the need for specialized screwdrivers and complex threading operations while maintaining secure fixation.
Solution Approach 2:
The fixing part is designed as a simple, tool-free component that can be easily installed and removed by the user without specialized tools. The simplified design reduces manufacturing complexity and allows for easy replacement, making the system more accessible to ordinary users including the elderly.
2Area of stationary object
If small screws with fine threads are used to secure lenses, then compact fixation is achieved, but the threads are easily damaged or broken by improper force application
Solution Approach 1:
The fixing part is divided into a head portion and a shaft portion, with the head portion engaging a slot in the lens frame. This segmentation allows the fixing mechanism to be manipulated by simply moving the head portion along the slot, eliminating the need for specialized screwdrivers and complex threading operations while maintaining secure fixation.
Solution Approach 2:
The traditional screw-thread mechanical system is replaced with a slot-engagement system. The shaft portion of the fixing part engages with a slot in the lens frame, allowing for secure fixation through simple linear movement rather than rotational threading, thereby eliminating thread damage risks.
3Measurement precision
If specialized screwdrivers are required for lens removal, then precise control is achieved, but the operation becomes inconvenient and time-consuming for regular users
Solution Approach 1:
The fixing part is divided into a head portion and a shaft portion, with the head portion engaging a slot in the lens frame. This segmentation allows the fixing mechanism to be manipulated by simply moving the head portion along the slot, eliminating the need for specialized screwdrivers and complex threading operations while maintaining secure fixation.
Solution Approach 2:
The fixing part is designed to be manipulated directly by the user's fingers through the head portion, enabling self-service lens replacement without requiring specialized tools or assistance. Users can easily slide the head portion along the slot to secure or remove the lens frame.
4Adaptability or versatility
If multiple spectacle frames are purchased to match different activities, then style and functionality requirements are met, but the cost becomes an economic burden
Solution Approach 1:
The fixing part is divided into a head portion and a shaft portion, with the head portion engaging a slot in the lens frame. This segmentation allows the fixing mechanism to be manipulated by simply moving the head portion along the slot, eliminating the need for specialized screwdrivers and complex threading operations while maintaining secure fixation.
Solution Approach 2:
The lens frame assembly with the slot-engagement fixing mechanism is designed to be universally compatible with different spectacle frames. Users can remove the lens frame from one spectacle frame and install it on another, allowing a single lens frame to serve multiple styles and activities, thereby reducing the need to purchase multiple spectacles.
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
Enables convenient and cost-effective lens exchange without damaging the spectacle frame, allowing users to easily change lens styles and functions to match different activities and reduce the need for multiple glasses purchases.
Implementation Method 1
An elastic part 174 is disposed in the long slot hole 173
Data Source
AI summary
The invention relates to a lens exchanging structure. Lens-frame assembling parts of a glasses frame of a main spectacle frame are assembled with lens frames. Intercalating flanges on one sides of the lens frames are correspondingly intercalated by intercalating concave parts of the lens-frame assembling parts. Positioning slots on another sides of the lens frames are inserted by positioning bumps of the fixing parts in sliding slots of the glasses frame. Therefore, when the main spectacle frame or the lens frames are needed to be exchanged, it only needs to fiddle the fixing parts to separate the positioning bumps of the fixing parts and the positioning slots of the lens frames. Then, the lens frames can be removed from the main spectacle frame. The removed lens frames can be assembled with other main spectacle frames having is other styles and colors.