Helmet Fixation Pivot Joints Head Shape Adaptation
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Solution Overview
Problem
Existing helmet fixation systems fail to optimally adapt to the wearer's head shape due to their limited adjustability, leading to a reduced protective effect and discomfort.
Innovation Solution
A helmet fixation system featuring pivot joints that connect head straps to fastening elements, allowing for flexible adjustment and including a free spacer section with a swivel joint located outside the helmet shell, enabling precise fitting to different head anatomies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a headband is provided to fix the helmet shell to the wearer's head, then the helmet can be secured to the head, but the fixation system cannot be optimally adapted to the wearer's head shape
Solution Approach 1:
The fixation system is divided into multiple independent adjustable components: a headband with spacer sections, pivot joints, and swivel joints. This segmentation allows each component to be independently adjusted to match the wearer's head anatomy, improving adaptability while maintaining secure fixation.
Solution Approach 2:
The fixation system incorporates movable elements including pivot joints that allow the headband to swivel and adjust to different head shapes. The spacer sections can be positioned at different locations and angles, enabling dynamic adaptation to various wearer head anatomies while maintaining reliable securing.
2Adaptability or versatility
If the swivel bearings are located directly on the helmet shell, then the structure is simplified, but the adaptability of the fixation system to the wearer's head anatomy is not ideal
Solution Approach 1:
Spacer sections are introduced as intermediary elements between the helmet shell and the headband. These spacer sections with pivot joints and swivel joints provide an intermediate layer that enables flexible adjustment and adaptation to different head shapes, while the overall structure remains relatively simple and manageable.
3Adaptability or versatility
If the mounting device is adjusted forwards and backwards as well as up and down with a variable angle, then some adaptability is achieved, but a targeted adjustment of the helmet to the head anatomy is not possible
Solution Approach 1:
The adjustment mechanism is segmented into multiple independent adjustment points: spacer sections can be positioned at different locations, pivot joints allow angular adjustment, and swivel joints enable fine-tuning. This segmentation provides both a wide adjustment range and precise control over the helmet's position relative to the wearer's head anatomy.
Data Source
Figure 1
Figure 2
AI summary
The helmet (1) has a fixing system attached at a helmet frame (2) for fixing the helmet frame at a head of a wearer. A fastening element (4) is fastened at the helmet frame. A fastening section is attached at the helmet frame, and another fastening section (11) freely runs downward along a path from the helmet frame. A head band (5) is provided for an adjustable system at the head of the wearer. A pivoting joint (6) connects the head band with the fastening element. The pivoting joint is provided between a free end of the fastening section (11) and the head band.