Helmet Visor Engagement Device for Ventilation and Sealing
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Solution Overview
Problem
Existing helmets lack a robust engagement device that allows the visor to be securely locked in multiple positions, particularly failing to provide adequate ventilation and fog prevention during use.
Innovation Solution
The helmet features a dual-position engagement device with a hooking and counter-hooking mechanism, enabling the visor to be locked in two distinct spatial relationships: a fully closed position for minimal air passage and a micro-aperture position for ventilation, utilizing a pushbutton-actuated mechanism to transition between these positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the visor is completely closed to prevent air passage, then protection and sealing are improved, but ventilation is reduced causing misting
Solution Approach 1:
The engagement device allows the visor to be dynamically positioned in multiple states: fully closed for sealing, partially open for ventilation, and fully open for removal. The hooking and counter-hooking mechanism enables smooth transitions between these positions, allowing the user to adapt the visor's sealing state to environmental conditions and prevent misting while maintaining protection when needed.
Solution Approach 2:
The engagement device changes the positional parameter of the visor relative to the helmet body. By providing multiple engagement positions (fully engaged for closure, partially engaged for micro-aperture, and disengaged for opening), the system allows precise control over the degree of closure, thereby controlling air passage and preventing misting without sacrificing protection.
2Device complexity
If a simple lever mechanism is used to open the visor, then device complexity is reduced, but engagement functionality is limited
Solution Approach 1:
The engagement device is segmented into distinct functional elements: a hooking portion on the visor, a counter-hooking portion on the helmet body, and a lever mechanism. This segmentation allows each component to perform a specific function while working together to achieve multiple engagement positions. The hooking and counter-hooking elements can engage at different points to provide full closure, partial closure, or complete opening.
Solution Approach 2:
The engagement device is designed to perform multiple functions: it can fully close and seal the visor, partially close to create a micro-aperture for ventilation, and completely open for visor removal. The same lever mechanism and hooking elements that enable simple operation also provide these diverse positioning options, making the device universally applicable for different riding conditions without requiring separate mechanisms for each function.
3Reliability
If the visor is locked in closed position, then protection is improved, but ventilation and fog prevention are reduced
Solution Approach 1:
The engagement device transforms the static closed position into a dynamic system with multiple stable positions. The visor can be securely locked in full closure for maximum protection, or easily adjusted to a partial closure position for ventilation. The lever mechanism provides smooth transitions between these states, making ventilation control as easy as protection, thereby resolving the contradiction between reliability and ease of operation.
Data Source
AI summary
The present disclosure relates to a helmet (12) including an engagement device (10) for engaging a visor (16) with a remaining portion (14, 18) of the helmet (12). The engagement device (10) is adapted to engage the visor (16) in two distinct engagement positions, wherein, in a first engagement position, the visor (16) is in a first spatial relationship with respect to the remaining portion (14, 18) of the helmet (12) and, in a second engagement position, the visor (16) is in a second spatial relationship with respect to the remaining portion (14, 18) of the helmet (12).