Dual-Folding Eyeglasses with Multi-Plane Hinge Mechanism
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Solution Overview
Problem
Conventional eyeglasses folding mechanisms result in a relatively thick configuration when folded, requiring bulky cases for storage, which are not easily carried.
Innovation Solution
The implementation of multiple sets of hinges, including a first pair for conventional horizontal folding and a second pair of rolling hinges that fold the temples both inward and downward, allowing the eyeglasses to be collapsed into a compact, ultra-thin configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional single-hinge folding is used, then the folding mechanism is simple, but the folded thickness is large
Solution Approach 1:
The temple is divided into multiple segments with different folding functions: a first temple segment that folds horizontally via a first hinge, and a second temple segment that folds vertically via a second hinge. This segmentation allows the temple to be folded in multiple stages, reducing the overall folded thickness while maintaining structural integrity.
Solution Approach 2:
The folding mechanism transitions from single-plane horizontal folding to multi-plane folding by adding vertical folding capability. The second hinge enables the temple to fold perpendicular to the first folding direction, moving the temple structure into a third dimension and achieving ultra-thin profile.
2Length of stationary object
If multiple sets of hinges are added, then the folded thickness is reduced, but the device complexity increases
Solution Approach 1:
The temple is divided into multiple segments with different folding functions: a first temple segment that folds horizontally via a first hinge, and a second temple segment that folds vertically via a second hinge. This segmentation allows the temple to be folded in multiple stages, reducing the overall folded thickness while maintaining structural integrity.
Solution Approach 2:
The folding mechanism transitions from single-plane horizontal folding to multi-plane folding by adding vertical folding capability. The second hinge enables the temple to fold perpendicular to the first folding direction, moving the temple structure into a third dimension and achieving ultra-thin profile.
3Volume of stationary object
If conventional folding is used, then the case size is large, but the portability is poor
Solution Approach 1:
The folding mechanism transitions from single-plane horizontal folding to multi-plane folding by adding vertical folding capability. The second hinge enables the temple to fold perpendicular to the first folding direction, moving the temple structure into a third dimension and achieving ultra-thin profile.
Solution Approach 2:
The dual-hinge mechanism allows the temple to be nested closer to the frame by folding it into the frame plane, creating a compact configuration that fits into a smaller case volume, similar to how nested dolls reduce space occupation.
Data Source
Figure 1A~1B
Figure 2A~2C
Figure 3A~3D
AI summary
Eyeglasses (100; 700) are provided for folding into a substantially flat configuration to be fitted inside a compact case (600). The eyeglasses (100) include a frame (712) surrounding a pair of lenses (714), and a pair of temples (716A, 716B) which extend from respective outer edges of the frame (712). A first hinge connection (102A, 102 B) positioned on each temple (716A, 716B) allows outer parts of the pair of temples (716A, 716B) to be folded horizontally inwards from the unfolded configuration into a first folded configuration. Respective inner parts of the temples (716A, 716B) are rotatable downwards relative to opposite side edges of the frame (712) about respective second hinge connections (710A; 710B) into a fully folded condition substantially coplanar with the frame (712). In some embodiments, the frame (712) and tips (7220 or earpieces of the temples (716A, 716B) are of rigid plastic material while the temples (716A, 716B) and hinge connections (102A, 102 B; 710A; 710B) are of metal.