Eyeglass Frame Inner-Outer Segmentation for Lens Protection
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Solution Overview
Problem
Conventional eyeglass frames face issues with deformation or breaking of lenses due to excessive temple opening, which affects the fit and durability, especially when used over a long period, and are limited in design applicability to full rim-type frames made of resin.
Innovation Solution
An eyeglass frame design featuring an outer and inner frame with temples that rotate between folded and opened positions, incorporating elastic parts to absorb excessive opening, and a fixing mechanism allowing for lens exchange, ensuring minimal force transmission to the lenses even at wide temple openings.
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 transmitted to the front frame and lenses increases causing deformation or breaking
Solution Approach 1:
The frame is divided into an outer frame and an inner frame, with the lenses attached to the inner frame. This segmentation isolates the lenses from the force generated by temple opening, allowing wide opening for ease of use while protecting lens strength.
Solution Approach 2:
The inner frame acts as an intermediary between the temples and the lenses. It absorbs and isolates the forces generated by temple movement, preventing direct transmission of force to the lenses while allowing the temples to open widely.
2Ease of operation
If temples are adjusted to fit the head properly, then comfort is improved, but repeated wide opening causes the temples to bend outward and lose fit
Solution Approach 1:
By separating the temple attachment from the lens holding structure through the inner frame, the temple shape is stabilized independently of lens position, preventing bending and loss of fit over time.
Solution Approach 2:
The hinge mechanism is pre-configured with a stopper that limits the maximum opening angle of the temples. This preliminary action prevents excessive opening that would cause temple bending, while still allowing sufficient opening for ease of use.
3Reliability
If a conventional structure is used to prevent lens force, then lens protection is improved, but design flexibility is limited to specific frame types
Solution Approach 1:
The inner frame structure serves multiple functions: it holds the lenses, isolates them from temple forces, and can be adapted to various frame types including full rim and half rim designs. This universal structure enables lens protection across diverse eyeglass designs.
Solution Approach 2:
The inner frame as an intermediary structure provides a universal solution for lens protection that can be integrated into different frame types and designs, making the lens protection mechanism adaptable and versatile across various eyeglass configurations.
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 design prevents lens deformation and breaking by limiting temple rotation, allowing for a wide range of designs and types of eyeglasses, including full and half rim types, while maintaining lens protection and ease of use.
Implementation Method 1
because the temples 131 and the connection arms 124 have elasticity, even if the temples are opened widely repeat, the opening operation or movement can be absorbed by the elasticity of the temples 131 and the connection arms 124
Data Source
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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). The outer frame (20) includes opening portions (40) provided to correspond to the eyeglass lenses (60) attached to the inner frame (50).