Plastic Casing on Sheet Metal Scooter Frame
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Solution Overview
Problem
Traditional scooter frames made from welded or riveted tube or plate profiles, often using aluminum-magnesium alloys, face high processing standards, leading to increased costs and poor waterproof performance, resulting in visually similar scooters with limited design flexibility.
Innovation Solution
A scooter design featuring a plastic casing that covers the outer peripheral side of a sheet metal frame, enhancing waterproofing, reducing production costs, and allowing for more attractive and customizable appearances through simplified manufacturing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional welding or riveting methods are used to form frames from tube or plate profiles, then structural strength is achieved, but processing standards must be raised and costs increase
Solution Approach 1:
The patent changes the material parameter from metal (requiring welding/riveting) to plastic (allowing injection molding), thereby changing the manufacturing process parameters from high-precision metalworking to more accessible plastic forming processes, reducing both processing standards and costs while maintaining structural integrity
Solution Approach 2:
The patent adopts plastic frames that can be produced through injection molding, which is a more cost-effective and less demanding process compared to metal welding or riveting, making the manufacturing process more accessible and reducing overall production costs
2Strength
If traditional metal frames are used, then structural integrity is maintained, but waterproof performance is poor
Solution Approach 1:
The patent changes the material parameter from metal to plastic, which inherently provides better waterproof performance due to the non-porous nature of plastic materials, while still achieving the required structural integrity through appropriate plastic formulation and molding techniques
Solution Approach 2:
The patent may use composite plastic materials or plastic-metal composite structures that combine the structural advantages of metal with the waterproof advantages of plastic, achieving both structural integrity and superior waterproof performance
3Ease of manufacture
If material characteristics and frame costs are constrained, then production cost is reduced, but appearance design flexibility is limited
Solution Approach 1:
The patent changes the material to plastic, which offers superior design flexibility compared to metal frames. Plastic can be molded into complex shapes, integrated with body panels, and finished in various ways (colors, textures, glossy/matte surfaces) without requiring additional assembly steps, thereby enabling diverse appearance designs while maintaining cost-effectiveness
Solution Approach 2:
The patent merges the frame structure with body panel elements through integrated plastic molding, combining functions that would traditionally require separate metal components and assembly operations into a single molded piece, thereby reducing production costs while expanding design possibilities
Data Source
AI summary
A scooter including a frame and a casing. The casing covers an outer peripheral side of the frame and is made of plastics.