Eyeglass Frame With Elastic Hinge Parts
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Solution Overview
Problem
Conventional eyeglass frames face issues with deformation and breaking of lenses due to excessive temple opening, which limits their design flexibility and applicability to various types, especially full rim-type frames made of resin.
Innovation Solution
The eyeglass frame design incorporates an outer frame with an inner frame and attaching members, featuring elastic parts near hinges to absorb excessive opening forces, ensuring that even wide temple openings do not significantly impact the lenses, allowing for a new design and broader structural compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If temples are allowed to open widely for ease of use, then ease of operation is improved, but the force applied to the front frame and lenses increases causing deformation and breaking
Solution Approach 1:
The front frame is divided into an outer frame and an inner frame, with the inner frame specifically designed to hold the lenses. This segmentation allows the outer frame to absorb opening forces while the inner frame and lenses remain protected from excessive stress.
Solution Approach 2:
The inner frame acts as an intermediary structure between the temples and the lenses. It absorbs and distributes the forces generated by temple opening, preventing direct transmission of harmful forces to the lenses while still allowing the temples to open widely.
2Reliability
If a protective structure is added to prevent lens deformation, then reliability is improved, but device complexity increases
Solution Approach 1:
The inner frame is nested within the outer frame, creating a compact protective structure. This nested design provides lens protection without significantly increasing the overall size or complexity of the eyeglass frame, as the protective element is integrated within the existing structure.
Solution Approach 2:
The attaching members combine multiple functions: they connect the inner frame to the outer frame, provide structural support, and help distribute forces. This merging of functions reduces the need for additional separate protective components, thereby limiting the increase in device complexity.
3Strength
If the frame structure is made more robust to handle wide opening, then strength is improved, but adaptability to different designs decreases
Solution Approach 1:
The inner frame and attaching members are designed as universal components that can be applied to various eyeglass frame designs and materials, including resin-based full rim types. The attaching members can accommodate different connection methods (screws, adhesives, or mechanical interlocks), making the protective structure adaptable to diverse design requirements.
Solution Approach 2:
The protective structure is applied locally where needed - the inner frame is positioned specifically to protect the lenses, and the attaching members are placed at strategic connection points. This localized approach provides necessary strength without requiring a complete redesign of the entire frame structure, thereby maintaining design flexibility.
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
This design effectively prevents lens deformation and breaking, enabling the eyeglass frame to maintain functionality and adaptability across different designs and materials, including resin-based full rim types.
Implementation Method 1
featuring elastic parts near hinges to absorb excessive opening forces
Data Source
Figure 1A~1C
Figure 2
Figure 3A~3B
AI summary
An eyeglass frame includes an outer frame (20), an inner frame (50) provided with a pair of eyeglass lenses (60), and temples (31) connected to the outer frame (20). The inner frame (50) is attached to the outer frame (20) through connection members (55).