Helmet Anti-Glare Visor Mechanism with Segmented Cable Routing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing helmets with anti-glare visors suffer from reduced mechanical strength and increased noise due to the coupling hole in the outer shell, which compromises both safety and quietness.
Innovation Solution
A helmet design featuring an anti-glare visor mechanism with a sliding member and transmission cables that pivot the visor between positions, where the transmission cables are routed through a recessed accommodation portion with a closed bottom, minimizing the size and impact of the coupling hole, and reducing noise by avoiding direct paths to the ear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a coupling hole extending through the outer shell is used to accommodate the operation mechanism, then the operation mechanism can be positioned and function properly, but the mechanical strength of the outer shell is reduced
Solution Approach 1:
The coupling hole is segmented into two separate openings: a first opening in the outer shell and a second opening in the inner shell. The transmission cable passes through both openings and connects the sliding member to the support mechanism. This segmentation allows the operation mechanism to function properly while minimizing the impact on the outer shell's mechanical strength, as the first opening can be smaller and positioned optimally.
Solution Approach 2:
The coupling structure transitions from a single through-hole in the outer shell to a multi-dimensional path involving the inner shell. The transmission cable routing creates a three-dimensional pathway that bypasses the need for a large direct opening in the outer shell, thereby preserving structural integrity while enabling mechanism operation.
2Ease of operation
If a coupling hole extending through the outer shell is used to accommodate the operation mechanism, then the operation mechanism can be positioned and function properly, but noise produced when riding a vehicle directly reaches the ear of the wearer
Solution Approach 1:
The noise path is segmented by introducing the inner shell as an intermediate barrier. The first opening in the outer shell and the second opening in the inner shell are positioned to break the direct line-of-sight path for noise transmission to the wearer's ear, thereby reducing noise exposure while maintaining operational functionality.
Solution Approach 2:
The inner shell acts as an intermediary structure between the outer shell opening and the wearer's ear. This intermediate layer blocks direct noise transmission pathways, serving as a acoustic barrier while still allowing the transmission cable to pass through its own opening to maintain mechanism operation.
3Ease of manufacture
If the transmission cable is routed through a large opening in the outer shell, then the cable can be easily installed and connected, but the mechanical strength of the outer shell is significantly reduced
Solution Approach 1:
The cable installation path is segmented into two separate routing sections: one through the outer shell and another through the inner shell. This allows each opening to be optimized independently - the first opening can be positioned and sized for easy cable installation, while the second opening in the inner shell provides additional routing flexibility, collectively reducing the impact on outer shell strength.
Solution Approach 2:
The cable routing utilizes three-dimensional space by passing through both the outer and inner shells at different positions. This multi-level routing approach distributes the cable path across multiple dimensions, allowing smaller individual openings that collectively maintain structural integrity while facilitating cable installation.
Data Source
AI summary
A helmet includes an operation mechanism, which is accommodated in an accommodation portion, on an outer shell of the helmet for operating an anti-glare visor with a transmission cable. One wall surface at an end of the accommodation portion in an operation direction defines an end surface including an insertion hole extending through the outer shell for passage of the transmission cable.