Eyeglass Hinge Assembly for Multi-Directional Temple Rotation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional eyeglasses are prone to permanent deformation or fracture damage due to limited rotational directions of the temples, which hinder the structure's ability to adapt to external forces from various directions.
Innovation Solution
The eyeglass frame design includes temple-connecting arms and temples with distinct rotational directions, combined with a hinge assembly featuring shaft pins, biasing members, and pressing members that allow for multi-directional rotation and adaptive structural changes, preventing deformation and fracture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the temples are designed to rotate only in a single direction relative to the lens frame, then the structure is simple and easy to manufacture, but the eyeglasses cannot adapt to external forces from multiple directions and are prone to permanent deformation or fracture damage
Solution Approach 1:
The temple assembly is divided into two independent rotational segments: the temple-connecting arm rotates relative to the lens frame in a first direction, and the temple rotates relative to the temple-connecting arm in a second direction. This segmentation allows each component to handle forces from different directions independently, improving overall adaptability without requiring a single complex multi-directional joint.
Solution Approach 2:
The invention introduces a second rotational dimension by allowing the temple to rotate relative to the temple-connecting arm in a direction different from the first rotation. This creates a two-dimensional rotational capability that enables the temple assembly to adapt to forces from multiple directions (front-rear and up-down) rather than being constrained to a single rotational plane.
2Reliability
If the temples are designed with limited rotational direction, then the manufacturing process is simple, but the structure cannot change its form in response to external forces leading to permanent deformation or fracture
Solution Approach 1:
The rotational functionality is segmented into two independent rotations with different directions. The first rotation occurs at the hinge assembly between the lens frame and temple-connecting arm, while the second rotation occurs at the temple-connecting arm and temple interface. This segmentation allows each joint to be manufactured independently with standard hinge mechanisms, maintaining ease of manufacture while improving reliability through multi-directional adaptability.
Solution Approach 2:
The temple assembly transitions from a static single-direction rotation to a dynamic two-directional rotation system. The temple-connecting arm can rotate in a first direction relative to the lens frame, and the temple can subsequently rotate in a second direction relative to the temple-connecting arm. This dynamic capability allows the structure to adapt its configuration in response to external forces, preventing permanent deformation and fracture while maintaining manufacturability through standard rotational joint design.
3Adaptability or versatility
If the temple-connecting arm and temple are designed with fixed rotational axes, then the structure is stable and simple, but it cannot adapt to forces from various directions and suffers from permanent deformation or fracture
Solution Approach 1:
The rotational system is segmented into two distinct rotational interfaces: one between the lens frame and temple-connecting arm, and another between the temple-connecting arm and the temple. Each interface has its own rotational axis and direction, allowing the structure to segment the adaptation process into manageable parts while achieving overall multi-directional adaptability without excessive complexity.
Solution Approach 2:
The two rotational directions are designed to be asymmetric relative to each other. The first rotation direction of the temple-connecting arm differs from the second rotation direction of the temple, creating an asymmetric rotational system that can adapt to forces from various directions. This asymmetry in rotational directions enables the temple assembly to handle multi-directional forces effectively while maintaining a relatively simple structural design.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The frame effectively adapts to external forces from multiple directions, preventing structural damage and ensuring the temples can be positioned to meet user requirements through rotational adjustments.
Implementation Method 1
The first biasing members are respectively disposed in the first grooves of the temple-connecting arms, and have front ends respectively facing the first seat bodies of the first shaft seats. Each first pressing member is disposed between and abutting against the front end of one of the first biasing members and the first seat body of a corresponding first shaft seat. Each first biasing member generates different biasing forces according to different abutment positions of each of the first pressing members.
Data Source
AI summary
An eyeglass frame includes a lens frame, two temple-connecting arms having front ends disposed respectively and rotatably on left and right sides of the lens frame and each including a groove and a shaft hole, two temples having front ends disposed respectively and rotatably on rear ends of the temple-connecting arms, and a hinge assembly including two shaft seats respectively disposed on the left and right sides of the lens frame and each having a seat body and a seat hole, two shaft pins each inserted into aligned shaft hole and seat hole, two biasing members respectively disposed in the grooves of the temple-connecting arms, and two pressing members each abutting between one of the biasing members and the seat body of a corresponding shaft seat and capable of abutting against different surfaces of the seat body when each temple-connecting arm is rotated relative to the lens frame.