Motor Vehicle Door Handle Multi-Layer Functional Coating
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Solution Overview
Problem
The automotive industry faces challenges in producing door handles that are easy to manufacture, aesthetically pleasing, and resistant to external influences such as light, mechanical, and chemical degradation, while also meeting increasing quality requirements and design diversity.
Innovation Solution
A door handle with a multi-part housing featuring a functional coating that includes a printed information layer, adhesive layer, color layer, and protective layers, applied using various methods like spraying, dip coating, or printing, which enhances adhesion and durability while allowing for customizable designs and improved resistance to environmental factors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If chrome plating is applied to door handles to achieve aesthetically pleasing surface finish, then appearance quality is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The coating system is segmented into multiple functional layers (adhesive layer, color layer, protective layer) applied in sequence, allowing each layer to perform its specific function independently and simplify the overall manufacturing process
Solution Approach 2:
The patent uses printed information layers to replicate metal designs and aesthetic patterns on plastic surfaces, creating visual copies of metallic appearances without requiring actual metal plating processes
2Shape
If multiple coating layers are applied to achieve design diversity and aesthetic quality, then surface appearance is improved, but manufacturing time and process complexity increase
Solution Approach 1:
The adhesive layer is applied first to prepare the surface, followed by sequential application of color and protective layers, with each step building on the previous to streamline the overall manufacturing timeline
Solution Approach 2:
Multiple functional properties (adhesion, coloration, protection) are merged into a integrated multi-layer coating system that can be applied in a streamlined manufacturing process
3Adaptability or versatility
If printed information layer is added to provide design customization and information content, then design versatility is improved, but adhesion reliability and protection of information layer become critical requirements
Solution Approach 1:
The adhesive layer serves as an intermediary between the housing surface and the printed information layer, ensuring reliable adhesion and proper positioning of the information layer while maintaining design flexibility
4Ease of manufacture
If plastic material is used for housing to enable easy manufacturing and design flexibility, then ease of manufacture is improved, but resistance to external influences (light, mechanical, chemical) deteriorates
Solution Approach 1:
The patent creates a composite structure combining plastic housing with multiple functional coating layers, where the plastic provides ease of manufacturing and the coating layers provide resistance to light, mechanical, and chemical influences
Solution Approach 2:
The protective layer changes the surface parameters of the plastic housing, providing enhanced resistance to external influences while maintaining the underlying plastic's manufacturing advantages
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 simplifies the manufacturing process, provides a durable and aesthetically versatile handle that is resistant to mechanical and chemical influences, and allows for various design configurations, including a 'metal design' appearance, while ensuring reliable adhesion and protection of the information layer.
Implementation Method 1
The adhesive layer serves as an adhesion promoter for the color layer or the information layer on the housing
Implementation Method 2
it is conceivable that the functional coating has a protective layer, which is arranged on the information layer, so that the information layer is arranged between the outer surface of the housing and the protective layer
Implementation Method 3
the material of the protective layer and/or the information layer and/or the color layer and/or the adhesive layer can be applied to the defined outer surface of the housing using a printing process
Data Source
Figure 1~3
Figure 4~6
Figure 7~10
AI summary
The invention relates to a handle (1), especially a door handle of a motor vehicle, comprising a multi-component housing (2) and an electronic unit (6) arranged inside the housing (2). According to the invention, the housing (2) comprises a defined outer surface (7) to which a functional coating (10) is applied. Said functional coating (10) comprises at least two layers (11, 12, 13), including an information layer (11) printed (11) onto the handle, and a protective layer (12) arranged on said information layer, the information layer (11) being arranged between the outer surface (7) of the housing (2) and the protective layer (12).