Eyeglasses Flexible Coupling Pieces Frame Stability

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Solution Overview

Problem

Conventional eyeglasses with spring-loaded pieces are costly, prone to damage, heavy, and uncomfortable due to their complex structure, which causes the frame to bend and change the focal distance when worn by individuals with larger head sizes, leading to unsatisfactory vision correction and potential lens displacement.

Innovation Solution

The eyeglasses feature flexible and resilient coupling pieces with holding and detainment holes, allowing temples to be securely joined and bend outwardly to accommodate varying head sizes without bending the frame, ensuring a stable focal distance and reducing manufacturing complexity and weight.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If spring-loaded pieces with multiple components are used to prevent frame bending, then the frame stability is improved, but the manufacturing cost increases and the device complexity increases

Engineering Contradiction:

Improveframe stabilityVSAvoidcoupling piece complexity

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent combines multiple functional components (pivotal element, fixed sleeve, elastic element, and bolt) into a single integrated coupling piece that is pivoted directly to the frame. This merging of functions reduces the number of separate parts needed while maintaining the frame stability function through the resilient coupling mechanism.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The coupling piece serves multiple functions simultaneously: it acts as a pivotal connection point, provides resilient force through the elastic element, secures the temple via the holding room and gripping teeth, and prevents frame bending. This multi-functionality reduces overall device complexity by eliminating the need for separate components for each function.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Stability of the object's composition

If spring-loaded pieces with multiple components are used to prevent frame bending, then the frame stability is improved, but the manufacturing cost increases

Engineering Contradiction:

Improveframe stabilityVSAvoidmanufacturing cost

Core Design Contradiction:

Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

Inventive Principle:

Principle #5Merging (Combining)

3Stability of the object's composition

If spring-loaded pieces with multiple components are used to prevent frame bending, then the frame stability is improved, but the weight increases and comfort decreases

Engineering Contradiction:

Improveframe stabilityVSAvoideyeglasses weight

Core Design Contradiction:

Stability of the object's compositionVSWeight of moving object

Solution Approach 1:

The patent employs a flexible resilient element within the coupling piece that can bend and deform to accommodate head size variations. This flexible component provides the necessary stability and adaptability without requiring heavy rigid structures, thereby reducing overall weight while maintaining frame stability.

Inventive Principle:

Principle #30Flexible shells and thin films

4Stability of the object's composition

If spring-loaded pieces with multiple components are used to prevent frame bending, then the frame stability is improved, but the reliability decreases due to easy damage

Engineering Contradiction:

Improveframe stabilityVSAvoidcoupling piece durability

Core Design Contradiction:

Stability of the object's compositionVSReliability

Solution Approach 1:

The resilient elastic element within the coupling piece acts as a cushioning mechanism that absorbs and dissipates stress and impact forces before they can damage the critical components. This beforehand cushioning protects the coupling piece from damage while maintaining the frame stability function.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

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 solution provides a cost-effective, durable, and comfortable eyeglasses design that maintains a consistent focal distance, preventing frame bending and lens displacement, while being easier to manufacture and less likely to suffer damage.

Implementation Method 1

an elastic element 43, which is received in the holding room 522, and contacts a rear end of the fixed sleeve 42 at a front end thereof

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

The coupling pieces are flexible and resilient, and each have a holding hole on a rear end, and a detainment hole on a lateral side

Methodology Applied

Scientific EffectFlexibility: Elasticity

Data Source

PatentUS7562976B2Eyeglasses structure

Publication Date: 2009.07.21 HSIEN CHANG OPTICAL INDAL

AI summary

A pair of eyeglasses includes a frame, lenses embedded in the frame, two coupling pieces pivoted to two ends of the frame respectively, and two temples joined to the coupling pieces respectively; the coupling pieces are flexible and resilient; each of the coupling pieces has a holding hole on a rear end, and a detainment hole on a lateral side thereof, which communicates with the holding hole; each of the temples has a joining section, and an embedded protrusion on a lateral side of the joining section; the temples are each joined to the corresponding coupling piece with the joining section being received in the holding hole, and with the embedded protrusion being embedded in the detainment hole of the coupling piece; in use, the coupling pieces will be made to bend outwardly by the wearer's head, and make the temples pressed against the wearer's head owing to their resilience.