Screw-less Eyeglass Joint with Bidirectional Rod
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Solution Overview
Problem
Traditional screw-based connections for eyeglass frames and temples are labor-intensive, costly, and prone to rust and loosening over time, while existing screw-less solutions often have complex structures and tedious assembly processes.
Innovation Solution
A screw-less joint structure utilizing two bases with insertion slots and a bidirectional screw rod, allowing temples to rotate and connect simply and quickly to the eyeglass frame, featuring insertion arms, engagement arms, and a threaded screw rod for secure assembly without screws.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional screw-based connections are used, then structural integrity is maintained, but assembly time and labor cost increase
Solution Approach 1:
The patent removes the screw component entirely from the connection system, extracting the fastening function into an integrated snap-fit mechanism within the joint structure itself, eliminating the need for separate fasteners and reducing assembly steps
Solution Approach 2:
The connection and fastening functions are merged into a single integrated joint structure where the temple and frame components interlock directly through complementary geometric features, combining what were previously separate connection and fastening operations into one simultaneous action
2Reliability
If traditional screws are used, then secure connection is achieved, but rust and loosening occur over time
Solution Approach 1:
The patent replaces the threaded mechanical fastening system with a snap-fit engagement system using elastic deformation and geometric interlocking, eliminating the moving parts and threaded interfaces that are prone to rust and loosening while maintaining secure connection through material elasticity and precise geometric fit
3Ease of operation
If screw-less connection structures are used, then assembly is simplified, but structure becomes complicated
Solution Approach 1:
The joint structure is segmented into distinct functional zones: insertion arms for initial engagement, curved edges for guidance, L-shaped edges for lateral constraint, and engagement arms for final locking, allowing each component to perform its specific function with simple geometry rather than one complex integrated feature
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 straightforward, efficient assembly process that maintains structural integrity and prevents rust, offering a practical and innovative alternative to traditional screw-based connections.
Implementation Method 1
The top end and the bottom end of the bidirectional screw rod each have a threaded shank. The threaded shanks can be respectively screwed into the screw holes of the two bases.
Data Source
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AI summary
The present disclosure provides a joint structure (40) for eyeglass frames and temples. An eyeglass frame (10) and two temples (20) are connected by the joint structure (40), which has two bases (41, 42) and a bidirectional screw rod (43). Since the assembly of the bases (41, 42) and the bidirectional screw rod (43) is simple and quick, labor and cost of assembly is saved and the joint structure (40) is an innovative eyeglass structure.