Transparent Coated Metal Casing That Preserves Brushed Gloss
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Solution Overview
Problem
Metal casings in electronic devices lose their original surface gloss due to anti-oxidation layers, and subsequent coatings fail to replicate the natural texture and visual effect of the metal base plate.
Innovation Solution
A casing structure for electronic devices is developed with a metal base plate having a brushed texture and high gloss surface, featuring a transparent cathodic electrodeposition paints layer and a transparent coating layer, applied through a series of surface treatments including polishing, wire drawing, and electroplating to maintain the natural appearance and provide protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an anti-oxidation layer is applied on the metal base plate to protect the surface, then corrosion and wear resistance are improved, but the original surface gloss and natural texture are lost
Solution Approach 1:
A clear coat layer is introduced as an intermediary between the metal base plate and the external environment. This clear coat provides corrosion protection while maintaining the natural appearance of the metal surface, as it is transparent and does not alter the visual properties of the underlying metal.
Solution Approach 2:
The protective function is extracted from the anti-oxidation layer that also provides appearance, and separated into a dedicated clear coat layer. This allows the metal base plate to maintain its natural surface properties while the clear coat layer independently provides corrosion and wear protection.
2Shape
If coatings with metal powder or inorganic material are applied to restore the metal appearance, then the visual effect is improved, but the complexity of the manufacturing process increases
Solution Approach 1:
The appearance-restoring function is extracted from complex coatings containing metal powder or inorganic materials, and assigned to the natural metal surface itself. The metal base plate's inherent visual properties are preserved and utilized, eliminating the need for additional appearance-restoring materials.
Solution Approach 2:
A homogeneous clear coat layer is applied instead of heterogeneous coatings with metal powder or inorganic materials. This clear coat is transparent and uniform, providing protection without adding visual complexity or requiring complex application processes.
3Reliability
If multiple layers of coating are applied to provide both protection and appearance, then the protective function is improved, but the transparency and natural appearance are compromised
Solution Approach 1:
A homogeneous clear coat layer is used instead of multiple layers with different properties. This single transparent layer provides both protection and maintains appearance, eliminating the need for multiple layers that would compromise transparency.
Solution Approach 2:
The protective function is extracted and provided by a dedicated clear coat layer, while the appearance function is provided by the natural metal surface. This separation allows both functions to be optimized independently without compromising transparency.
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 preserves the brushed texture and high gloss surface of the metal base plate while offering protection, ensuring the metal base plate's appearance is maintained without damage and providing the required anti-corrosion properties.
Implementation Method 1
the metal base plate is cathodic electrode positioned to form a transparent cathodic electrodeposition paints layer on the brushed texture
Data Source
AI summary
A casing structure of electronic device including a metal base plate, a transparent cathodic electrodeposition paints layer, and a transparent paints coating layer is provided. The metal base plate has brushed texture and high gloss surface. The transparent cathodic electrodeposition paints layer is disposed on the base metal base plate. The transparent paints coating layer is disposed on the transparent cathodic electrodeposition paints layer. A manufacturing method of casing structure of electronic device is also provided.