Protective Helmet Bas-Relief Design via CNC Milling
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Solution Overview
Problem
The existing protective helmets lack both strong structural integrity and aesthetically appealing designs, failing to meet user demands for both safety and fashion in a cost-effective and industrially viable manner.
Innovation Solution
A protective helmet with a bas-relief decoration made using a numerically controlled milling machine from commercially available materials, featuring a thicker cap made of durable materials like thermoplastic polymers and composite fibers, coated with paint layers that can be selectively removed to create decorative patterns without compromising mechanical strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a decorated outer cap is added to the helmet, then aesthetic appeal is improved, but structural integrity and safety are worsened
Solution Approach 1:
The helmet is divided into functional segments: a thick safety cap for protection and a separate decorative outer cap with bas-relief patterns for aesthetics. The decorative layer can be removed or damaged without affecting the underlying safety structure, resolving the contradiction between appearance and strength.
Solution Approach 2:
A removable decorative outer cap serves as an intermediary layer between the user and the safety cap. This mediator provides aesthetic value while isolating the safety cap from direct cosmetic damage, allowing the safety structure to remain intact and functional.
2Shape
If custom decorative designs are implemented, then aesthetic appeal is improved, but manufacturing complexity and cost are worsened
Solution Approach 1:
Instead of creating unique decorative elements for each helmet, the invention uses bas-relief patterns that can be replicated through molding. The decorative outer cap can be mass-produced with standardized patterns, reducing manufacturing complexity while maintaining aesthetic appeal.
Solution Approach 2:
The decorative design is achieved by varying the relief depth and pattern geometry in the mold cavity rather than adding complex assembly steps. By changing molding parameters such as relief height and pattern density, multiple decorative variants can be produced using the same basic manufacturing process.
3Shape
If material is removed to create bas-relief decoration, then aesthetic appeal is improved, but mechanical strength is worsened
Solution Approach 1:
The decoration is created on a separate outer cap layer rather than removing material from the safety cap. This segmentation allows aesthetic modification of the decorative layer without compromising the structural integrity of the underlying safety structure.
Solution Approach 2:
The decorative bas-relief patterns are pre-formed in the mold cavity before the helmet is assembled. The decorative outer cap is manufactured with the relief patterns already integrated, eliminating the need for subsequent material removal operations that would weaken the structure.
Data Source
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AI summary
A protective helmet (1) comprises a protective helmet outer cap (2) including a bas-relief (3), said bas-relief (3) being formed by a cutting machine, such as a numerically controlled milling machine.