Integrally Molded Resin Article for Vehicle Display Gloss Contrast

Solution Overview

Problem

Existing resin molded articles for vehicle display devices lack the ability to create various appearances with a simple structure, particularly in regions within the occupant's field of view, while maintaining scratch resistance and appearance quality.

Innovation Solution

A resin molded article with integrally molded high gloss and low gloss regions, where the high gloss region has a higher surface glossiness than the low gloss region, and a step boundary surface is formed between them, allowing for different patterns and orientations to create visual contrast without coating.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If coating is performed to improve appearance quality, then appearance quality is improved, but manufacturing complexity and cost increase

Engineering Contradiction:
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The resin molded article incorporates distinct high gloss regions and low gloss regions within the same component, each with different surface properties. This allows different areas to have optimized appearances for their specific functions without requiring additional coating layers, thereby reducing manufacturing complexity while maintaining high appearance quality.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The invention changes the surface glossiness parameter of the resin material itself by integrating high gloss and low gloss regions during molding. This eliminates the need for post-molding coating processes, reducing manufacturing steps and complexity while achieving the desired appearance quality differentiation.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If multiple separate parts are used to create different gloss regions, then appearance variety is improved, but device complexity increases

Engineering Contradiction:
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The invention merges multiple functional regions (high gloss and low gloss areas) into a single integrally molded resin article. This eliminates the need for assembling multiple separate parts to achieve different appearances, thereby reducing structural complexity while maintaining appearance variety through the embedded gloss differentiation.

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If coating is applied to achieve scratch resistance, then scratch resistance is improved, but manufacturing cost and process complexity increase

Engineering Contradiction:
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The resin molded article achieves scratch resistance through its own material properties and integrated surface structure (high gloss and low gloss regions), without requiring external coating layers. The high gloss regions provide durability and scratch resistance while the low gloss regions provide aesthetic appearance, all within the base material itself.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS11173786B2Resin molded article and vehicle display device
Publication Date: 2021.11.16
  • US11173786B2 patent drawing
  • US11173786B2 patent drawing
  • US11173786B2 patent drawing

AI summary

A resin molded article is applied to a vehicle display device for displaying information on a vehicle, and a high gloss region having a relatively high surface glossiness and a low gloss region having a relatively low surface glossiness are integrally molded. As a result, since the high gloss region and the low gloss region having different surface glossiness are integrally formed in a single resin molded article 1, the resin molded article and the vehicle display device obtain an effect such that various appearances are created with a simple structure.