Protective Helmet Flexible Flap Adjustment Mechanism
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Solution Overview
Problem
Conventional protective helmets lack adaptability to the user's head morphology, resulting in dead spaces that compromise protection and comfort, and often require complex, heavy, and expensive tightening mechanisms.
Innovation Solution
The helmet features notches extending from the front and side portions that form flexible fins, allowing for adjustable fitting by bending, which eliminates dead spaces and integrates a compact adjustment element located in the rear portion, reducing the risk of breakage and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid protective cap is used, then protection strength is improved, but adaptability to head morphology deteriorates
Solution Approach 1:
The protective cap is segmented into multiple flexible fins that can independently deflect and adapt to the head's contours, while maintaining overall structural integrity and protection strength
Solution Approach 2:
The cap incorporates flexible fins made of material that can bend and conform to the head's shape, eliminating dead spaces while maintaining protective function
2Reliability
If a tightening element is added to reduce dead spaces, then protection is improved, but device complexity and weight increase
Solution Approach 1:
The flexible fins automatically adapt to the head's morphology through their own elasticity and flexibility, eliminating the need for complex tightening mechanisms while still eliminating dead spaces
3Reliability
If a tightening element is added to eliminate dead spaces, then protection is improved, but weight increases
Solution Approach 1:
The flexible fins use their inherent material properties to adapt to the head, eliminating the need for additional tightening components that would increase weight
4Adaptability or versatility
If long notches are created to improve adaptability, then internal stress increases, but adaptability is improved
Solution Approach 1:
The notch geometry is optimized with specific curvature and transition zones that distribute stress more evenly, allowing long notches to provide extensive adaptability while controlling internal stress concentrations
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances comfort, aesthetics, and safety by providing a customizable fit that reduces internal stress and weight, while maintaining resistance and allowing for a wider range of head size adjustments.
Implementation Method 1
the actuation of which makes it possible to adjust the distance separating said free ends by bending of the fins
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a protection helmet that comprises a protection cover (5) to be worn on the head of a user and including a shock-absorbing cap (6) and at least one outer shell (7) attached to at least a portion of the outer surface of the cap (6). The cover (5) has a front portion (8), a rear portion (9) defined downwards by a lower edge (10), two opposite side portions (11a, 11b) and a summit portion (12). The protection cover (5) includes at least one slot (14, 15) extending from the front portion (8) or from one of the side portions (11a, 11b) and giving onto said lower edge (10) or onto a recess (13) formed on the rear portion (9) and open on said lower edge (10). The slot (14, 15) defines on either side thereof two flexible flaps (16) each having a free end on the side of the rear portion (9). The helmet further includes an element for adjusting the tightening of the cover (5), connected to the free ends of the flaps (16), and the actuation of which enables the adjustment of the distance between the free ends by bending said flaps (16).