Helmet Shell Longitudinal Adjuster for Head Size Adaptability
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Solution Overview
Problem
Existing protective helmets lack effective adjustability to accommodate various head sizes, leading to reduced wearing comfort, especially in prolonged use or challenging environments.
Innovation Solution
A protective helmet design featuring an external shell and internal support structure with a longitudinal adjuster, including a support strap that connects to the shell via form-fitting couplers and protrusions, allowing for adjustable positioning of the shell relative to the support structure, thereby varying the center of gravity and accommodating different head sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the protective helmet uses a fixed internal structure connected to the helmet shell, then the structural simplicity is maintained, but the adaptability to various head sizes is reduced
Solution Approach 1:
The patent applies the dynamics principle by making the connection between the helmet shell and support structure adjustable rather than fixed. The longitudinal adjuster enables the support structure to be positioned at different locations along the helmet shell, allowing the same helmet to adapt to various head sizes and shapes. This transforms a static structure into a dynamic one that can be reconfigured based on user needs.
Solution Approach 2:
The patent segments the connection system into distinct modular components: the helmet shell, the support structure, and the longitudinal adjuster with couplers. This segmentation allows each component to be independently designed and adjusted, facilitating adaptability while maintaining overall structural simplicity through standardized connection interfaces.
2Adaptability or versatility
If the protective helmet uses an adjustable internal structure to accommodate different head sizes, then the adaptability is improved, but the wearing comfort is reduced due to adjustment limitations
Solution Approach 1:
The longitudinal adjuster provides dynamic adjustment capability along the longitudinal axis of the helmet, allowing users to optimize the fit for their specific head dimensions. This continuous adjustability ensures that the center of gravity can be positioned optimally for comfort while maintaining protection.
Solution Approach 2:
The support structure with its adjustable connection serves multiple functions: it provides structural support, enables size adjustment, and allows optimization of the center of gravity position for comfort. This multi-functionality addresses both adaptability and wearing comfort requirements within a single integrated system.
3Adaptability or versatility
If the protective helmet shell is fixed in position relative to the support structure, then the structural stability is maintained, but the ability to adjust center of gravity position is lost
Solution Approach 1:
The connection system provides dynamic adjustability during the adjustment phase, allowing the support structure to be repositioned along the helmet shell to optimize center of gravity. Once adjusted to the desired position, the connection provides static stability to maintain that position during use, preventing unwanted movement.
Solution Approach 2:
The longitudinal adjuster acts as an intermediary mechanism between the helmet shell and support structure. It mediates between the need for stability and the need for adjustability by providing a controlled adjustment mechanism that can lock into position, ensuring both stability during use and adaptability during adjustment.
Data Source
AI summary
A protective helmet for the head of a human being includes an outer protective shell and an inner support structure that includes a headband defining a head-accommodating opening as well as a upper head support; on the headband, the support structure has a forehead-accommodating side and a side accommodating the back of the head; the support structure is secured to the protective shell using at least one force-transmitting connector. A longitudinal adjuster which is arranged between the protective shell and the support structure allows the protective shell to be adjusted relative to the support structure in the direction of the forehead-accommodating side or in the direction of the side accommodating the back of the head.