Rotating Control Element with Translucent Core and Electroplated Jacket
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Solution Overview
Problem
Existing control elements, such as adjusting wheels and actuating parts, face challenges in being easily operable, selectively backlit, and decorated with metal effects while maintaining cost-effectiveness in series production, especially in ensuring that non-electroplatable zones remain uncoated during electroplating processes.
Innovation Solution
A rotatably or slidably mounted control element made of plastic, comprising a translucent core element, a electroplatable jacket element, and a haptic element, where the core and jacket elements are produced through three-component injection molding, allowing for selective backlighting and easy operation, with the haptic element providing a soft, accessible surface and the jacket element enabling electroplating without protective measures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the control element is made translucent for backlighting, then illumination quality is improved, but the ability to apply metal coating is lost
Solution Approach 1:
The control element is divided into two distinct parts: a translucent core element for backlighting and a jacket element for electroplating. This segmentation allows each part to have optimized properties for its specific function without compromising the other.
Solution Approach 2:
The control element combines different materials with complementary properties: a translucent plastic core element and a metalizable jacket element. This composite structure enables both backlighting and electroplating capabilities to coexist in a single control element.
2Shape
If the entire control element is coated with metal layer, then aesthetic appearance is improved, but the translucent areas lose their light transmission capability
Solution Approach 1:
The metal coating is applied locally only to the jacket element rather than the entire control element. This allows different regions to have different properties: the jacket element provides metal aesthetic appearance while the core element maintains light transmission capability.
3Manufacturing precision
If protective measures are taken during electroplating to preserve non-metalizable areas, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
By segmenting the control element into core and jacket parts before electroplating, the need for complex protective measures is eliminated. The jacket element is designed to be inherently metalizable while the core element is designed to remain non-metalizable, simplifying the electroplating process.
4Ease of operation
If the control element structure is simplified for easy operation, then ease of operation is improved, but the ability to provide selective backlighting and metal effects is reduced
Solution Approach 1:
The control element uses composite construction combining translucent and metalizable materials in a integrated structure. This allows the element to maintain simple operational characteristics while providing versatile backlighting and decorative metal effects capabilities.
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 enables cost-effective, large-area backlighting and easy operation with finger accessibility, while allowing for visual emphasis through metalized zones, ensuring efficient series production and maintaining the integrity of non-electroplatable zones during electroplating.
Implementation Method 1
a translucent core element (1)
Implementation Method 2
a electroplatable jacket element (2)... enabling electroplating
Data Source
Figure 1a~2
AI summary
The control element is rotatably or slidably fixed and illuminated from back, made of plastic. A core element (1) is provided, which is made of translucent and non-electroplate plastic. The core element is made of polycarbonate. The cladding element is made of polyamide or acrylonitrile butadiene styrene (ABS) plastic and haptic element is made of thermoplastic elastomer, particularly a cross-linked thermoplastic elastomer. USE : Control element for controlling lamella in air nozzles or for controlling ventilators or air conditioning system of motor vehicle. ADVANTAGE : The control element is rotatably or slidably fixed and illuminated from back, made of plastic, and a core element (1) is provided, which is made of translucent and non-electroplate plastic, and hence ensures a control element that is operated by fingers in a simple manner. DESCRIPTION OF DRAWINGS : The drawing shows a perspective view of a core element. 1 : Core element 3 : Fluoroscopy part.