Helmet Chin Strap Closure with Pivoting Release Mechanism
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Solution Overview
Problem
Existing protective helmets lack adaptability to different use scenarios, as they either risk automatic opening and strangulation or failure to release in hazardous situations, failing to meet safety standards for various occupational and sports applications.
Innovation Solution
A protective helmet with a holding strap arrangement featuring a chin strap and closure parts that automatically open under a predetermined tensile force in one position but remain secure in another, utilizing a pivoting component with distinct introduction and removal directions to ensure secure fitting and automatic release, meeting safety standards depending on selected closed positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the chin strap is configured to automatically open at a predetermined force threshold, then the risk of strangulation is reduced, but the helmet may release in hazardous situations causing loss of protection
Solution Approach 1:
The closure system dynamically changes its release characteristics based on the position of the pivoting component. In the first closed position, the retention element engages the closure part to allow automatic opening at a first force threshold (preventing strangulation). In the second closed position, the retention element is disengaged to prevent automatic opening even at higher forces (maintaining protection during hazardous situations). This dynamic switching resolves the contradiction by adapting the system behavior to different operational requirements.
Solution Approach 2:
The system changes the force threshold parameter for automatic opening based on the selected closed position. The pivoting component allows switching between two distinct force thresholds: a first threshold that enables automatic release for safety, and a second threshold that prevents release for protection. This parameter change approach allows the same physical system to satisfy conflicting safety requirements for different application scenarios.
2Reliability
If the protective helmet is designed for specific occupational safety applications, then safety standards are met, but adaptability to other applications is limited
Solution Approach 1:
The closure system is designed with multi-functionality to serve different application requirements. The pivoting component with two selectable closed positions enables the same helmet to meet different safety standards: one position for applications requiring automatic release (occupational safety) and another position for applications requiring secure retention (sports activities). This universal design allows a single product to adapt to multiple use cases, resolving the contradiction between specialized optimization and broad adaptability.
Data Source
AI summary
A protective helmet including a helmet shell for at least partially covering the head of a helmet wearer, and a holding strap arrangement arranged on the helmet shell for holding the helmet shell on the head of the helmet wearer. The holding strap arrangement includes a chin strap connected to the helmet shell, a first closure part connected to the helmet shell, and a second closure part connected to the chin strap and can be brought into closed connection with the first closure part, with a closure being formed. The closure automatically opens in a first closed position if a predetermined opening tensile force acts between the closure parts, and the closure parts separate from each other. In a second closed position, the first closure part and the second closure part are always in closed connection with each other irrespective of a tensile force acting between the closure parts.