Spectacle Temple Decorative Element Injection Molding

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Solution Overview

Problem

Spectacle temple decorative elements, such as logos or designs, tend to detach over time and accumulate dirt due to being undersized and glued into recessed portions, leading to durability and aesthetic issues.

Innovation Solution

Injection molding a decorative element directly onto the spectacle or goggle component, ensuring intimate bonding and eliminating the need for a separate plate, thus preventing detachment and dirt accumulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a plate with decorative element is glued into a recessed seat on the temple, then the temple can be decorated with logo or design, but the plate is subject to partial or total detachment over time

Engineering Contradiction:
Improveease of manufactureVSAvoidreliability
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent merges the decorative plate and the temple body into a single integrated component. The decorative element is molded directly onto the temple surface, eliminating the separate plate that was previously glued into a recessed seat. This integration prevents detachment while maintaining the decorative function.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The decorative element is incorporated into the temple body during the molding process itself, before the product is assembled or used. By pre-integrating the decorative feature into the temple structure during manufacturing, the patent eliminates subsequent attachment issues that would occur with separate components.

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If the plate is made undersized to fit easily into the seat, then the plate can be easily installed, but an interspace is formed between the plate and seat which accumulates dirt

Engineering Contradiction:
Improveease of installationVSAvoiddirt accumulation
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

By merging the decorative element with the temple body through direct molding, the patent eliminates the interspace that would otherwise form between a separate plate and its seat. The integrated design ensures continuous surface contact, preventing dirt accumulation while maintaining ease of manufacture.

Inventive Principle:
Principle #5Merging (Combining)

3Shape

If a separate plate is glued into a recessed seat, then the decorative element can be applied to the temple, but the glued plate detaches over time and accumulates dirt

Engineering Contradiction:
Improveaesthetic appearanceVSAvoiddurability
Core Design Contradiction:
ShapeVSReliability

Solution Approach 1:

The patent combines the decorative element and temple body into a single molded component, preserving the aesthetic appearance while eliminating the reliability issues of detached plates. The integrated design ensures the decorative feature remains permanently attached.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The decorative element is incorporated into the temple structure during the initial molding process, before any assembly or use. This preliminary integration ensures both aesthetic quality and long-term durability by preventing subsequent detachment.

Inventive Principle:
Principle #10Preliminary action

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 enhances durability and aesthetic appeal by securely integrating the decorative element, preventing detachment and dirt accumulation, resulting in a more robust and visually appealing design.

Implementation Method 1

the decorative element 3 is injection molded onto the body 2

Methodology Applied
Scientific EffectInjection molding:

Data Source

PatentEP4491384A1Component of spectacles or goggle with integrated decorative element and spectacles and goggle comprising such component
Publication Date: 2025.01.15 LUXOTTICA SRL
  • EP4491384A1 patent drawingFigure 1~2
  • EP4491384A1 patent drawingFigure 3~4
  • EP4491384A1 patent drawingFigure 5

AI summary

A component (1) of spectacles or goggle is described, and related spectacles or goggle comprising such component (1); the component (1) comprises a body (2) of component of spectacles or goggle and a decorative element (3) made of at least one injection moldable material; wherein the decorative element (3) is injection molded on said body (2).