Foldable Reading Glasses Temple Interference Attachment
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Solution Overview
Problem
Folding reading glasses are fragile and prone to breakage when the temples are torqued or leveraged in the folded state, as they are only supported at the hinge with the lenses, making them cumbersome and difficult to store effectively.
Innovation Solution
The temples are supported and removably attached to the lenses using various interference fitting methods, such as ball and socket couplings, engagement features, and knurled surfaces, to enhance the structural integrity and prevent breakage when folded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the temples are folded around the lenses to form a compact unit, then the storage convenience is improved, but the structural strength deteriorates because the temples are only supported at the hinge
Solution Approach 1:
A support member is introduced as an intermediary element between the temple and the lens frame. This support member extends from the hinge toward the end of the temple, providing additional intermediate support points that prevent the temple from being leveraged or torqued when folded, thereby resolving the strength issue while maintaining the compact folded form
2Device complexity
If the temples are only supported at the hinge when folded, then the device complexity is reduced, but the reliability deteriorates as the temples become fragile and easily broken
Solution Approach 1:
The support member is designed as a segmented or modular component that can be integrated into the existing hinge structure. This segmentation allows the support function to be distributed along the temple length rather than concentrated at a single point, improving reliability without significantly increasing overall device complexity
Data Source
AI summary
Folding reading glasses of the type in which the temples fold around the lenses, in which the temples are supported and removably attached to the lenses while folded, providing greater integral strength to the entire assembly and resisting breakage. Several methods for attachment of the temples to the lenses are disclosed, including an interference fitting member in the temple that grasps the lens frame in the vicinity of the lens, and multiple embodiments of an interference fitting member in the temple that grasps a mating member on the outer edge of the lens frame. Combinations of these embodiments are also possible.