Snap-Fit Spectacle Lens-Frame Assembly Without Bending
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Solution Overview
Problem
Conventional half-frame glasses require physical strength to assemble and disassemble, risking damage to the lens and frame, and lack stability, leading to easy separation under external force.
Innovation Solution
A snap-fit device with engaging structures on the lens and frame, including locking portions and latching members, allowing easy assembly and disassembly without deformation, and enhancing stability through three-point engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the lens is bent and deformed to embed flanges in the frame, then the lens can be assembled into the frame, but physical strength is required and damage risk increases
Solution Approach 1:
The invention divides the lens into multiple segments: a main body portion and multiple flange portions that can be separately formed and then assembled. This segmentation allows the flanges to be embedded in the frame without requiring excessive bending force on the entire lens, reducing damage risk while maintaining ease of assembly.
Solution Approach 2:
The flange portions are pre-formed on the lens during the lens manufacturing process before assembly to the frame. This preliminary formation of flanges eliminates the need for forceful bending during assembly, as the flanges are already in their final embedded position-ready configuration.
2Productivity
If the lens is forced into the frame, then assembly can be completed, but physical strength is required and damage risk increases
Solution Approach 1:
By segmenting the lens into a main body and separate flange portions, the assembly process can proceed without forcing the entire lens structure. The flanges are designed to fit into the frame's embedding grooves independently, allowing smooth assembly completion without excessive force that could cause damage.
Solution Approach 2:
The flange portions act as intermediary elements between the lens main body and the frame. These flanges are specifically designed to engage with the frame's embedding grooves, providing a mediating interface that facilitates assembly without requiring forceful insertion of the entire lens.
3Ease of manufacture
If conventional assembly method is used, then lens can be installed, but stability is lacking and lens can easily separate under external force
Solution Approach 1:
The segmented lens structure with multiple flange portions creates multiple engagement points with the frame, distributing the mechanical load and improving stability. Each flange engages with the frame's embedding groove, creating a multi-point attachment system that resists separation under external force while maintaining assembly simplicity.
Solution Approach 2:
The invention adds dimensional stability by extending the lens structure in multiple directions with flange portions at different locations. This multi-dimensional distribution of engagement points enhances the overall stability of the lens-frame assembly, preventing easy separation while keeping the assembly process simple.
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
Facilitates easy and stable assembly and disassembly of spectacle lenses and frames, preventing damage and ensuring secure attachment.
Implementation Method 1
an elastic piece (157) separated from the first latching member (153) on its periphery except for the side connected with the first latching member (153)
Data Source
AI summary
The present invention relates to a snap-fit device for spectacle lens and spectacle frame, which mainly provides a spectacle frame comprising a lens assembly portion having an embedding groove arranged on the periphery thereof, so as for an upper edge and two sides of a lens to be embedded in the embedding groove of the lens assembly portion, wherein the lens assembly portion further has a first locking portion and a second locking portion respectively provided on two sides thereof. Thereby, when assembling, a second locking slot arranged on one side of the lens is firstly engaged with the second locking portion of the spectacle frame. The device provided by the present invention does not require any hand tools during the lens assembling and replacement process, and does not require bending or deforming the lens, which achieves the effect of easy lens assembly and replacement.