Screwless Hinge Design for Optical Glass

I am developing a lightweight, high-comfort eyewear product for heavy daily users.
This project focuses on creating a completely new mechanical structure, not a modification of existing eyewear designs.

Key Requirements：

New Screwless Hinge Design

No traditional screws as the main hinge connection

Can be based on elastic deformation, snap-fit, integrated flexure, or other innovative mechanisms

Must support long-term, high-frequency opening and closing

Integrated & Adjustable Nose Pad System

Nose pads integrated with the frame (no separate pad arms)

Allow limited adjustability for comfort and fit

Designed for long-term wear, suitable for Asian facial features

Structural Reliability

Intended for daily, long-hour use

Basic consideration of fatigue, deformation, and failure modes (concept-level evaluation is sufficient)

Material & Weight Constraints：

Material: Titanium / Beta Titanium (or justified alternatives)

Target total frame weight: ≤ 12g (lenses excluded, estimation acceptable)

Deliverables：

Written explanation of the screwless hinge mechanism (how it works, force path)

Assemblable 3D CAD concept model (STEP or equivalent)

Brief feasibility and risk notes (manufacturing and durability)