Chin Guard Fixed Strap Anti-Slip Design
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Solution Overview
Problem
Existing chin guard assemblies with adjustable straps can slip during strong impacts, leading to undesirable and unsafe positioning, as the strap's relationship with the chin guard is not fixed, causing potential dislocation.
Innovation Solution
A chin guard assembly with non-adjustable straps that are fixedly connected to the shell, featuring slots and channels for strap placement, ensuring the straps lie flush with the shell's surface and are secured with fasteners to prevent slippage, maintaining structural integrity and providing a secure fit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If adjustable straps are used in chin guard assemblies, then the straps can be customized to fit different users, but the chin guard can slip and move relative to the strap during strong impacts, resulting in undesirable and unsafe positioning
Solution Approach 1:
Instead of making the strap adjustable relative to the chin guard, the invention inverts the approach by making the strap fixed to the chin guard and providing adjustability at the helmet interface. The strap is secured to the chin guard body with fasteners, eliminating relative movement between the strap and chin guard during impact, while still allowing customization through helmet strap adjustment.
2Reliability
If the strap position relative to the chin guard is made fixed, then the chin guard assembly maintains stable positioning during impact, but the ability to adjust the fit for different users is reduced
Solution Approach 1:
The invention segments the adjustment function into two locations: the strap-chin guard connection is fixed and non-adjustable, while the helmet-strap connection remains adjustable. This segmentation allows the strap to maintain a fixed, reliable position relative to the chin guard during impact, while still providing user customization through the helmet interface.
3Reliability
If the strap is made non-adjustable and fixed to the chin guard, then slippage and dislocation are prevented during use, but the device complexity increases due to fixed connection mechanisms
Solution Approach 1:
The invention extracts the adjustment function from the strap-chin guard interface and relocates it to the helmet-strap interface. This removes the complexity of adjustable mechanisms from the chin guard assembly itself, while maintaining the necessary adjustability elsewhere in the system. The strap-chin guard connection becomes a simple fixed attachment.
4Shape
If the outer surface of the straps is made flush with the outer surface of the shell, then the aesthetic appearance and comfort are improved, but the manufacturing precision requirements increase
Solution Approach 1:
The invention incorporates preliminary positioning features directly into the mold during manufacturing. The slots are formed with predetermined dimensions and orientations that guide strap placement, and the indented areas are pre-formed to receive and position the straps. This preliminary action during molding ensures flush alignment without requiring additional post-manufacturing adjustment operations.
Data Source
AI summary
A chin guard assembly that includes a shell having an outer and inner surface, an outer peripheral edge extending around the shell, and a first and second end. The first and second ends each having at least one slot configured to receive a strap with each strap extending through the at least one slot and outwardly from each end, wherein one strap is fixed to the shell at the first end and one strap is fixed to the shell at the second end.