Vehicle Door Module Plate Structure for Recycled Plastic Rigidity
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Solution Overview
Problem
The challenge is to develop a door module plate for vehicles that utilizes environmentally friendly recycled plastics while ensuring sufficient mechanical strength, structural rigidity, and safety, as recycled plastics often lack the necessary physical properties due to heat processing.
Innovation Solution
The solution involves a door module plate design with a plate body made of recycled plastic, featuring a reinforcement rib integrated into the edge groove, which increases mechanical strength and sealing performance, and includes a specific geometry and material composition with fiberglass of 35 wt % or less, to enhance structural rigidity and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If recycled plastic is used as the main material of the door module plate, then environmental friendliness is improved, but mechanical strength deteriorates
Solution Approach 1:
The patent uses a composite material system consisting of recycled plastic (30-70 wt%), thermoplastic elastomer (5-40 wt%), and inorganic filler (5-30 wt%). This composite formulation combines the environmental benefits of recycled plastic with the mechanical properties provided by the elastomer and filler, resolving the contradiction between environmental friendliness and mechanical strength.
Solution Approach 2:
The patent optimizes the compositional parameters of the material mixture, specifically controlling the weight percentages of recycled plastic, thermoplastic elastomer, and inorganic filler within specific ranges. This parameter optimization ensures that the recycled plastic maintains sufficient mechanical strength while maximizing environmental benefits.
2Ease of manufacture
If the plate body is made of recycled plastic, then manufacturing costs are reduced, but structural rigidity deteriorates
Solution Approach 1:
The patent creates a composite material system where recycled plastic is combined with thermoplastic elastomer and inorganic filler. The inorganic filler specifically contributes to structural rigidity, while the recycled plastic reduces manufacturing costs, thereby resolving the contradiction between cost reduction and rigidity maintenance.
Solution Approach 2:
The patent applies different material properties to different regions of the door module plate through the composite formulation. The inorganic filler provides localized rigidity enhancement in areas where structural stability is critical, while the recycled plastic dominates in areas where cost reduction is prioritized.
3Object-affected harmful factors
If recycled plastic is used for the door module plate, then environmental friendliness is improved, but reliability deteriorates
Solution Approach 1:
The patent develops a composite material system that combines recycled plastic with thermoplastic elastomer and inorganic filler to achieve reliable mechanical properties. The thermoplastic elastomer provides toughness and impact resistance, while the inorganic filler enhances dimensional stability, together ensuring the safety and reliability required for automotive applications.
Solution Approach 2:
The patent optimizes the compositional parameters within specific ranges to ensure reliable performance. By controlling the weight percentages of each component and processing parameters, the patent achieves consistent mechanical properties that meet automotive safety requirements while maintaining environmental friendliness.
Data Source
AI summary
A door module plate includes a plate body provided to correspond to a door of a vehicle, a mount portion provided at an edge portion of the plate body and configured to be fastened to a fastening member, an edge groove provided at the edge portion of the plate body, and a reinforcement rib integrally protruding from an internal surface of the edge groove, obtaining an advantageous effect of ensuring rigidity and improving safety and reliability.