Vented Helmet Strap Load Distribution via Structural Cage
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Solution Overview
Problem
Existing helmet strap systems concentrate retention loads at localized attachment points, which can lead to uneven force distribution during falls or crashes, potentially affecting the foam material and the overall structural integrity of the helmet.
Innovation Solution
The helmet design incorporates a structural support system, such as a cage or butterfly structure, that encircles vents and is coupled with strap hangers, allowing for even distribution of strap retention forces throughout the helmet body, eliminating the need for additional non-structural components and enabling post-assembly strap installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional localized attachment points are used for straps, then the helmet structure remains simple, but the retention loads are concentrated at specific points causing uneven force distribution
Solution Approach 1:
The structural support system is divided into multiple segments including longitudinal beams, transverse beams, and radial beams that collectively form a distributed load-bearing network. This segmentation allows retention loads to be distributed across multiple structural elements rather than concentrated at single attachment points, thereby improving structural integrity while maintaining manufacturing simplicity through modular construction
Solution Approach 2:
The patent introduces a three-dimensional structural support system with longitudinal, transverse, and radial beams that create multiple spatial dimensions for load distribution. This dimensional approach transforms the traditional two-dimensional attachment plane into a volumetric load-distributing framework, enabling forces to be dispersed throughout the helmet structure in multiple directions
2Strength
If additional non-structural components are added to distribute forces, then force distribution improves, but the helmet becomes bulkier and heavier
Solution Approach 1:
The structural support system serves dual functions: it provides structural reinforcement for the helmet shell while simultaneously acting as the force distribution mechanism for strap attachments. The longitudinal, transverse, and radial beams collectively form both the structural framework and the load-bearing network, eliminating the need for separate non-structural components and thereby avoiding additional weight
Solution Approach 2:
The patent merges the structural support function and the force distribution function into a single integrated system. The structural beams that reinforce the helmet shell are the same elements that receive and distribute strap retention loads, combining what would traditionally be separate components into one unified structure that achieves both structural integrity and force distribution without adding weight
3Strength
If complex structural systems are used to distribute loads, then retention load distribution improves, but manufacturing complexity increases
Solution Approach 1:
The structural support system is segmented into standardized components (longitudinal beams, transverse beams, radial beams) that can be manufactured independently using conventional processes and then assembled into the final configuration. This segmentation enables each component to be optimized for its specific manufacturing process while simplifying quality control and assembly procedures
Solution Approach 2:
The structural beams are pre-formed with attachment features and connection points during the manufacturing process, allowing the complex load-distributing structure to be assembled from pre-prepared components rather than requiring complex in-situ fabrication. This preliminary preparation of structural elements simplifies the overall manufacturing process while maintaining the integrity of the load distribution system
4Ease of operation
If traditional strap attachment systems are used, then the helmet design remains simple, but strap installation cannot be performed after assembly
Solution Approach 1:
The attachment system incorporates adjustable and removable features that allow the straps to be installed, removed, and reinstalled after the helmet assembly is complete. The structural beams include accessible attachment points that can engage with strap hardware dynamically, enabling post-assembly configuration adjustments while maintaining a relatively simple overall structure
Solution Approach 2:
The structural support beams act as intermediaries between the helmet shell and the strap system, providing accessible attachment points that facilitate post-assembly strap installation. These intermediate structural elements serve as the interface that connects the permanent helmet structure with the removable strap components, enabling flexibility in strap installation without requiring complex integration
Data Source
AI summary
A helmet is provided that can include a body defining a front end, a rear end opposite the front end, a first lateral end and a second lateral end opposite the first lateral end. The body further defines one or more vents extending therethrough. The helmet also includes a structure at least partially embedded in the body and encircling at least one vent of the one or more vents, and a strap hanger coupled to the structure.