3D-Printed Dashboard Structure With Integrated Air Ducts

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Solution Overview

Problem

The assembly of traditional dashboard bodies is complex and heavy due to their multi-part construction, which includes ventilation system ducts made of polymer or composite materials, requiring extensive bolting and screwing.

Innovation Solution

A dashboard body produced in one piece via three-dimensional printing with a lacunar structure that integrates fluid circulation conduits, reducing material usage while maintaining mechanical strength, and featuring a network of interconnected hollow vessels for fluid circulation, allowing for reduced part count and weight.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If traditional multi-part construction with separate ducts is used, then fluid circulation function is achieved, but assembly complexity and weight increase

Engineering Contradiction:
Improveassembly complexityVSAvoidfluid circulation function
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The patent merges the dashboard body structure with the fluid circulation ducts into a single integrated component. The ducts are no longer separate parts but are formed as integral channels within the dashboard body itself, eliminating the need for separate duct components and their associated fasteners while maintaining full fluid circulation functionality.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The dashboard body serves multiple functions simultaneously: it provides the structural framework of the dashboard and integrates the fluid circulation ducts for air conditioning and heating systems. This multi-functional design eliminates the need for separate dedicated duct components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Weight of stationary object

If numerous separate parts are assembled, then fluid circulation ducts are provided, but weight and assembly time increase

Engineering Contradiction:
Improvedashboard body weightVSAvoidassembly process
Core Design Contradiction:
Weight of stationary objectVSEase of manufacture

Solution Approach 1:

The dashboard body and fluid circulation ducts are combined into a single monolithic component manufactured via 3D printing. This eliminates the need for multiple separate parts that would require punching, screwing, and bolting operations, significantly reducing both weight and assembly complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent replaces traditional mechanical assembly methods (punching, screwing, bolting) with an additive manufacturing process. The 3D printing technology creates the integrated structure in a single manufacturing step, eliminating the need for subsequent mechanical assembly operations.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Strength

If solid material is used throughout, then mechanical strength is maximized, but material quantity and weight increase

Engineering Contradiction:
Improvestructural strengthVSAvoidmaterial quantity
Core Design Contradiction:
StrengthVSQuantity of substance

Solution Approach 1:

The patent employs a lattice or honeycomb internal structure within the dashboard body that provides adequate mechanical strength while significantly reducing material quantity. The porous or cellular internal architecture maintains structural integrity through its geometric design rather than relying on solid material throughout.

Inventive Principle:
Principle #31Porous materials

Solution Approach 2:

The dashboard body features varying material distribution with different densities in different regions. Areas requiring higher strength have denser material or thicker walls, while areas with lower structural demands have reduced material content. The fluid circulation ducts are positioned strategically within the structure to provide both functional and structural benefits.

Inventive Principle:
Principle #3Local quality

Data Source

PatentEP3880541B1Dashboard body with a lacunary structure and integrated fluid circulation ducts
Publication Date: 2024.02.28 RENAULT SA
  • EP3880541B1 patent drawingFigure 1~2
  • EP3880541B1 patent drawingFigure 3~4

AI summary

The invention relates to a dashboard body (10) produced as a single piece, in particular by three-dimensional printing, and having a lacunary structure defining at least one fluid circulation duct (14-22) having at least one opening. The one or more fluid circulation ducts can be connected to an auxiliary device, such as an air conditioning device, which can be fixed to the dashboard body.