Adjustable Spectacle Arms with Rotatable Hinge Mechanism
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Solution Overview
Problem
Spectacles with fixed arm dimensions and geometries fail to accommodate varying anatomical characteristics of users, leading to discomfort and increased costs due to the need for multiple arm replacements.
Innovation Solution
The design incorporates adjustable arms with a hinge mechanism and rotatable sections that allow for independent adjustment of the pantoscopic angle, arm length, and terminal end inclination, enabling precise fitting to individual users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If arms are made with fixed dimensions and geometry, then manufacturing is simplified, but adaptability to different users is reduced
Solution Approach 1:
The arm is divided into multiple independent sections (first section, second section, third section) that can be adjusted relative to each other. This segmentation allows each section to be optimized for manufacturing while the combined structure provides adaptability through independent adjustment of pantoscopic angle, arm length, and terminal end inclination.
Solution Approach 2:
The arm transitions from a fixed rigid structure to a dynamic adjustable structure. The hinge mechanism and rotation mechanism enable the arm to change its configuration dynamically, allowing the same arm to adapt to different users and different lens types while maintaining manufacturing simplicity.
2Adaptability or versatility
If multiple arm models are provided for different users, then adaptability is improved, but device complexity and storage requirements increase
Solution Approach 1:
A single arm design serves multiple functions that previously required different arm models. The arm can be configured for different pantoscopic angles, lengths, and terminal end inclinations, replacing the need for multiple specialized arm models and reducing storage requirements while maintaining full adaptability.
Solution Approach 2:
Instead of providing different arm models with fixed parameters, the invention allows continuous adjustment of key parameters (pantoscopic angle, arm length, terminal end inclination) within a single arm design. This parameter variability achieves the same adaptability as multiple models but with reduced complexity.
3Adaptability or versatility
If manual adjustment of arms is performed by heating, then adaptability is improved, but adjustment precision and reliability are reduced
Solution Approach 1:
The manual thermal adjustment process is replaced with a mechanical hinge and rotation mechanism. This mechanical system provides precise, controlled, and reproducible adjustments without the variability and imprecision associated with manual heating and bending, while maintaining full adaptability.
Solution Approach 2:
The adjustment mechanism is designed to be user-adjustable without requiring specialized tools or thermal processing. The hinge and rotation mechanisms allow end-users to make precise adjustments themselves, eliminating the need for professional optician intervention and improving both precision and reliability.
Data Source
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Figure 7A~7D
AI summary
Spectacles (1) comprise a front frame (2) and a pair of arms (10), wherein each arm extends between a first end (11) attached to the front frame and a second, longitudinally opposed end (12). Each arm comprises a first portion (20) associated with the first end and extending along a first axis (X), and a second portion (30), associated with the second end and extending along a second axis (Y), these portions abutting one another at a first bearing plane (A) which is not perpendicular to the first and second axes, and being selectively rotatable about (20) an adjustment axis (K) perpendicular to the first bearing plane (A) to vary the inclination between the first and the second axis. The first portion comprises a first element (21) and a second element (22), abutting one another at a second bearing plane (B) perpendicular to the first axis, the elements being selectively rotatable about the first axis. The second portion (30) comprises a third element (31) and a fourth element (32), abutting one another at a third bearing plane (C) perpendicular to the second axis (Y) and selectively rotatable about the second axis.