Vehicle Step Rail Applique Snap-Fit Retention
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Solution Overview
Problem
The high cost and environmental concerns associated with chrome plating in manufacturing step rails for vehicles, which account for a significant portion of the total cost and involve caustic processes with high scrap rates, while also failing to provide a robust and aesthetically appealing design without the use of chrome plating.
Innovation Solution
A step rail design featuring an elongated frame element with edge channels and resilient appliques that snap into place, providing a frictional retention mechanism without the need for chrome plating, using materials like extruded aluminum or stainless steel to achieve a polished appearance similar to chrome without the associated costs and environmental drawbacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If chrome plating is used to provide an aesthetically pleasing appearance, then the appearance quality is improved, but the manufacturing cost increases significantly and environmental harm increases
Solution Approach 1:
The patent uses a polished stainless steel or aluminum applique that copies the aesthetic appearance of chrome plating without requiring the actual chrome plating process. The applique is formed with a polished surface that mimics the reflective, metallic look of chrome, providing visual similarity while avoiding the costly and environmentally harmful plating process.
Solution Approach 2:
The patent replaces the expensive and complex chrome plating process with a more economical polished metal applique. This alternative approach uses readily available polished stainless steel or aluminum materials that can be formed and attached more cheaply, reducing manufacturing costs while maintaining aesthetic appeal.
2Shape
If chrome plating is used to provide an aesthetically pleasing appearance, then the appearance quality is improved, but environmental harm increases due to caustic materials and high scrap rate
Solution Approach 1:
The patent uses a polished stainless steel or aluminum applique that copies the aesthetic appearance of chrome plating without requiring the actual chrome plating process. The applique is formed with a polished surface that mimics the reflective, metallic look of chrome, providing visual similarity while avoiding the costly and environmentally harmful plating process.
Solution Approach 2:
The patent converts the harmful chrome plating process into a beneficial alternative by using mechanically polished metal appliques. Instead of using caustic chemicals and complex plating operations that generate waste and require environmental management, the solution uses mechanical polishing of solid metal materials, which is cleaner and more environmentally friendly.
3Shape
If chrome plating is used on step rails, then the aesthetic appearance is improved, but the manufacturing complexity and time increase
Solution Approach 1:
The patent uses a polished stainless steel or aluminum applique that copies the aesthetic appearance of chrome plating without requiring the actual chrome plating process. The applique is formed with a polished surface that mimics the reflective, metallic look of chrome, providing visual similarity while avoiding the costly and environmentally harmful plating process.
Solution Approach 2:
The patent segments the step rail into separate components: a frame element and an applique. The applique is a separate polished metal piece that can be manufactured independently and then attached to the frame. This segmentation allows the aesthetic component to be produced through simpler forming and polishing operations rather than complex plating processes.
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 allows for a cost-effective, robust, and aesthetically appealing step rail that eliminates the need for chrome plating, reducing manufacturing complexity and environmental impact while maintaining a polished appearance similar to chrome-plated surfaces.
Implementation Method 1
A forward resilient applique is included which has a first end with a cross sectional contour and dimensions sufficient to fit in, and be retained within, the forward edge channel
Implementation Method 2
The forward and rearward resilient appliques are attached with a snapping-like action and retained by friction to the elongated frame element
Data Source
AI summary
The present disclosure relates to an accessory component for a vehicle. The accessory component has an elongated frame element having a forward edge channel and a rearward edge channel formed parallel to the forward edge channel. A pair of first channels is formed in the upper surface and parallel to the forward and rearward edge channels. Forward and rearward resilient appliques are included which have each have first ends which are shaped to be retained within the forward and rearward edge channels, respectively. Second ends of each applique engage with a respective one of each of the pair of first channels. The forward and rearward resilient appliques are attached with a snapping-like action and retained by friction on the elongated frame element.