Plastic Front Cover Structure for Lightweight Vehicle Strength

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Solution Overview

Problem

The existing front cover structures for vehicles, typically made of steel or aluminum plates, result in excessive weight, affecting the lightweight and technological advancements in vehicles, especially in electric vehicles, due to their complexity and need for reinforcing sheet metal.

Innovation Solution

A front cover structure composed of stacked transparent and colored plastic layers with a hardened coating layer, integrated injection molding, and a light-emitting identification assembly, which reduces weight, improves aesthetics, and enhances durability and energy efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If steel or aluminum plates are used for the front cover structure, then structural strength and durability are improved, but vehicle weight increases significantly

Engineering Contradiction:
Improvestructural strengthVSAvoidvehicle weight
Core Design Contradiction:
StrengthVSWeight of moving object

Solution Approach 1:

The patent applies composite materials by combining multiple plastic layers (transparent plastic layer, colored plastic layer, and hardened coating layer) to create a front cover structure that achieves both lightweight and high strength requirements. The composite structure provides structural integrity while maintaining weight reduction benefits.

Inventive Principle:
Principle #40Composite materials

2Weight of moving object

If transparent and colored plastic layers are stacked to reduce weight, then vehicle weight decreases and aesthetics improve, but structural strength may be compromised

Engineering Contradiction:
Improvevehicle weightVSAvoidstructural strength
Core Design Contradiction:
Weight of moving objectVSStrength

Solution Approach 1:

The patent uses a composite structure with multiple plastic layers including a transparent plastic layer, a colored plastic layer, and a hardened coating layer. This composite design maintains structural strength while achieving weight reduction and aesthetic improvements.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The patent changes the material parameters by using hardened coating layers and specific plastic material properties to enhance structural strength. The hardened coating layer provides increased surface hardness and impact resistance, allowing the plastic structure to meet strength requirements despite using lighter materials.

Inventive Principle:
Principle #35Parameter changes

3Strength

If a hardened coating layer is added to the transparent plastic layer, then surface hardness and impact resistance are improved, but manufacturing complexity increases

Engineering Contradiction:
Improveimpact resistanceVSAvoidmanufacturing complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The patent merges multiple functions into an integrated structure where the hardened coating layer is combined with the transparent and colored plastic layers in a single composite component. This integration reduces the number of separate parts and assembly steps, thereby reducing manufacturing complexity despite adding functional layers.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS20250091528A1Front cover structure and vehicle
Publication Date: 2025.03.20 ZHEJIANG ZEEKR INTELLIGENT TECH CO LTD
  • US20250091528A1 patent drawing
  • US20250091528A1 patent drawing
  • US20250091528A1 patent drawing

AI summary

A front cover structure of a vehicle includes a front cover outer and a front cover plastic inner plate. The front cover outer plate includes a transparent plastic layer and a colored plastic layer. Along a thickness direction of the front cover outer plate, the transparent plastic layer is provided on an upper surface of the colored plastic layer. Along the thickness direction, the front cover outer plate and the front cover plastic inner plate are stacked, and the front cover plastic inner plate is connected to the colored plastic layer.