Pivoting Headgear Straps for Protective Shell Stability
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Solution Overview
Problem
Conventional protective headwear is uncomfortable, unstable, and poorly suited to accommodate different head sizes.
Innovation Solution
The design includes a pivotal forehead strap and occipital strap with a tightening member, allowing for adjustable positioning and distribution of pressure across the head, with the occipital strap being pivotally coupled to side members and the forehead strap capable of pivoting about a shared axis to accommodate varying head shapes and sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional fixed headgear is used, then the structure is simple, but it is uncomfortable and cannot accommodate different head sizes
Solution Approach 1:
The headgear incorporates movable straps with pivot joints that allow dynamic adjustment to different head shapes and sizes. The occipital strap pivots at the crown and the forehead strap pivots at the temples, enabling the structure to adapt dynamically rather than being fixed in one configuration.
Solution Approach 2:
The headgear is divided into multiple independent components: side members, occipital strap, forehead strap, and chin strap, each capable of independent movement and adjustment. This segmentation allows each part to be optimized for specific functions while collectively providing adaptability to various head sizes.
2Ease of operation
If conventional rigid headgear is used, then the structure is stable, but it creates pressure on sensitive areas and is uncomfortable
Solution Approach 1:
The pivot joints enable the straps to move dynamically and conform to the wearer's head shape, distributing pressure evenly across broader areas rather than concentrating it on sensitive points. This dynamic adaptation maintains comfort while preserving stability through the interconnected strap system.
Solution Approach 2:
The straps are designed as flexible elements that can bend and conform to the contours of the head, reducing pressure on sensitive areas while maintaining secure contact. The flexibility allows the headgear to adapt to individual head shapes without creating uncomfortable pressure points.
3Stability of the object's composition
If conventional fixed-position straps are used, then the structure is simple, but the headgear shifts and is unstable on the head
Solution Approach 1:
The pivot joints at strategic locations (crown, temples) allow the straps to self-adjust and maintain optimal positioning as the wearer moves, preventing shifting while accommodating natural head movements. This dynamic positioning system maintains stability without requiring complex locking mechanisms.
Solution Approach 2:
The occipital strap is positioned to engage the crown of the head first, establishing a stable anchor point before the forehead and chin straps engage. This preliminary positioning ensures the headgear is properly seated and reduces shifting during wear.
Data Source
AI summary
In one aspect, a headgear for engaging and supporting protective headwear on a wearer's head includes a first side member positioned on a first side of the headgear, a second side member positioned on a second side of the headgear opposite the first side, a forehead strap coupled to the first and second side members and positioned on a front half of the headgear, and an occipital strap having an end coupled to one of the first side member and the second side member on the front half of the headgear and the occipital strap extending to a rear half of the headgear.