Helmet Inner Visor Elastic Mounting Mechanism
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Solution Overview
Problem
Existing protective helmets for motorcyclists with internal sun visors face issues such as premature deterioration, complex assembly, and difficult replacement, along with accidental removal and misalignment during operation.
Innovation Solution
A protective helmet design featuring a second visor that is at least partly elastically deformable, with forks and projecting teeth engaging with pins and circular guides for precise actuation and mounting, allowing easy assembly, preventing accidental disengagement, and facilitating easy removal and replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the inner visor is constrained to pins inside the cap, then the visor is securely mounted and protected against accidental removal, but the visor becomes difficult to remove and replace, requiring specific tools and removal of several helmet portions
Solution Approach 1:
The mounting system is divided into separate components: the inner visor with its mounting elements can be independently removed from the helmet cap. This segmentation allows the visor to be securely mounted during use while enabling easy removal and replacement by separating the visor component from the cap structure.
Solution Approach 2:
The inner visor is extracted as a removable component from the helmet structure. The mounting elements are designed to allow the visor to be taken out easily for cleaning, maintenance, or replacement without requiring tools or disassembling multiple helmet portions, while still providing secure mounting during operation.
2Volume of moving object
If the projections of the sun visor are inserted in circular guides, then the overall dimensions of the sun visor are reduced and the center of instantaneous rotation can be positioned as desired, but the projections must support all loads during actuation, resulting in wear and premature deterioration
Solution Approach 1:
The mounting elements combine multiple functions: they provide rotation guidance through circular guides while simultaneously supporting actuation loads through forks engaged with pins. This merging of guidance and load-bearing functions prevents premature deterioration by distributing loads away from the circular guide projections.
Solution Approach 2:
Forks and pins act as intermediary elements between the sun visor and the circular guides. The forks engage with pins to transmit actuation forces, while the circular guides only provide rotation guidance. This intermediary mechanism protects the circular guides from bearing full loads during actuation, preventing wear and deterioration.
3Object-affected harmful factors
If the additional inner visor is positioned internally with respect to the transparent visor, then greater protection against external agents is provided and accidental actuation is prevented, but the aerodynamic function of the outer visor may be obstructed
Solution Approach 1:
The inner visor is nested within the helmet cap structure, positioned internally with respect to the transparent outer visor. This nesting provides protection against external agents and prevents accidental actuation of the inner visor, while the outer visor maintains its aerodynamic function by remaining the externalmost element.
4Reliability
If the side ends of the inner visor are constrained to two coaxial pins, then the visor is securely mounted, but any operations to remove and mount the inner visor are particularly complicated, requiring specific tools and removal of several portions of the helmet
Solution Approach 1:
The mounting system is segmented into removable components that can be easily separated. The inner visor with its mounting elements forms an independent module that can be removed from the helmet cap without requiring tools or disassembling multiple portions, simplifying maintenance operations while maintaining secure mounting during use.
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 design enhances the durability and ease of assembly and replacement of the inner visor, reduces the risk of damage during actuation, and ensures precise and secure mounting, improving safety and usability.
Implementation Method 1
The second visor (3), which comprises a shielding portion and two ends at the sides of said shielding portion, is at least partly elastically deformable
Data Source
AI summary
Protective helmet of the type comprising a first outer visor to intercept the viewing aperture of the helmet mounted rotatably on said helmet, a second visor mounted, inside said first outer visor, rotatably on the cap of the helmet, and a device for actuation and mounting of said second visor on said cap, said second visor including a shielding portion and two ends at the sides of said shielding portion and being at least partly elastically deformable. The inner visor comprises, at least at one side end thereof, a fork and, at or in proximity of one or other of the side ends thereof, at least one externally projecting tooth. Correspondingly, said device for actuation and mounting comprises at least one pin for engaging, directly or indirectly, with said fork and at least one circular guide inside which said projecting tooth of said second visor is removably coupled in a sliding manner, said at least one pin and said at least one circular guide being integral and/or integrated with said cap.