Offset Spectacle Hinges for Longitudinal Compression Resistance
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Solution Overview
Problem
Existing eyeglasses deform when stored in cases due to longitudinal compression, affecting optical correction and user comfort, and existing solutions either increase rigidity or fail to prevent deformation.
Innovation Solution
The eyeglasses feature asymmetrical temple joints with differing longitudinal positions to absorb compressive forces, preventing deformation of the front surface while maintaining aesthetic appeal and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional hinges are used in spectacles, then the structure is simple and easy to manufacture, but the temples cannot be adjusted independently and cause pressure on the user's head
Solution Approach 1:
The hinge assembly is divided into separate components: a first hinge portion connected to the first temple, a second hinge portion connected to the second temple, and a bridge portion connecting the two hinge portions. This segmentation allows each component to be adjusted independently, enabling the temples to move relative to each other without requiring complex overall adjustments, thus resolving the contradiction between adjustability and structural complexity.
Solution Approach 2:
The hinge assembly incorporates dynamic adjustment capabilities through adjustable connections between the temple portions and the bridge. The temples can be adjusted independently relative to the bridge and to each other, allowing the structure to adapt to different user needs and head shapes, thereby improving adaptability while maintaining manageable complexity through modular design.
2Ease of operation
If conventional hinges are used in spectacles, then the manufacturing process is simple, but the temples cannot be adjusted independently causing pressure on the user's head
Solution Approach 1:
By segmenting the hinge into separate portions (first hinge portion, second hinge portion, and bridge portion), each component can be manufactured independently using standard processes, then assembled together. This reduces the overall manufacturing complexity compared to creating a single complex adjustable mechanism, while still enabling independent temple adjustment for user comfort.
Solution Approach 2:
The bridge portion acts as an intermediary element connecting the two temple portions. This intermediary structure allows the temples to be adjusted independently relative to each other and to the bridge, providing ease of operation for users while maintaining a relatively simple manufacturing process for each individual component.
3Adaptability or versatility
If conventional hinges are used in spectacles, then the structure is straightforward, but the temples cannot be adjusted independently causing pressure on the user's head
Solution Approach 1:
The hinge assembly is segmented into distinct portions that can be adjusted independently. This segmentation allows for more precise control over temple positioning and adjustment, improving reliability by ensuring that each portion can be optimally positioned and secured, thereby enhancing both adaptability and connection reliability.
Solution Approach 2:
The dynamic adjustment mechanism allows the temples to be positioned and secured at various angles relative to the bridge. This dynamic capability improves reliability by enabling the hinge to adapt to different usage conditions while maintaining secure connections, as each portion can be adjusted and locked into its optimal position.
Data Source
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AI summary
The invention relates to a pair of spectacles (1) extending along a first longitudinal axis (X) from the rear to the front, comprising a front face (10), a first tenon (11), a second tenon (12), a first temple (21) and a second temple (22), which are respectively connected to the first tenon (11) and the second tenon (12) via a first hinge (31) and a second hinge (32), the first tenon (11) being shorter than the second tenon (12) such that the longitudinal positions of the hinges (31, 32) are different in order to limit the risk of deformation of the front face (10) as a result of a longitudinal compressive load.