Safety Helmet Air Canalization Structure
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Solution Overview
Problem
Conventional safety helmets impede natural air circulation and sweat evaporation, leading to discomfort, especially in hot weather, due to their rigid design and padding materials that obstruct airflow and compromise breathability and cleanliness.
Innovation Solution
The safety helmet incorporates an air canalization structure made of spongy material with flexible supports and removable caps, featuring air intake and extraction openings connected to auxiliary air systems, which enhance airflow and include a visor demisting function, while allowing for easy cleaning and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If padding is made with soft deformable material to adapt to head shape, then fit comfort is improved, but aeration channels and openings are occluded, reducing air passage
Solution Approach 1:
The padding is divided into multiple independent zones: some areas use soft deformable material for comfort, while other areas use rigid or semi-rigid material to maintain aeration channel geometry. This segmentation allows each zone to fulfill its specific function without compromising the other.
Solution Approach 2:
Different materials with different properties are used in different locations of the padding. Soft material is applied where comfort is prioritized, while rigid/semi-rigid material is used in regions where structural integrity of air channels is critical, ensuring local optimization of both comfort and ventilation.
2Ease of operation
If padding compression is increased to improve fit, then anatomical adaptation is improved, but groove lateral walls narrow, reducing air flow section
Solution Approach 1:
The padding structure incorporates dynamic elements that can adapt their properties based on compression level. The rigid/semi-rigid components maintain their shape under compression to preserve channel geometry, while flexible components provide anatomical adaptation, creating a dynamic system that responds differently to pressure in different regions.
Solution Approach 2:
The padding combines multiple materials with contrasting properties: soft compressible materials for anatomical adaptation and rigid/semi-rigid materials for structural support. This composite construction allows the padding to simultaneously achieve good fit and maintain adequate air flow passages under compression.
3Productivity
If openings are exposed to allow direct air contact with head, then evaporation is improved, but hair intrusion occludes the openings
Solution Approach 1:
A mesh or filter structure is introduced as an intermediary element at the air openings. This intermediary allows air molecules to pass through for evaporation while physically blocking larger particles such as hair, thus maintaining both evaporation efficiency and opening patency.
4Ease of operation
If fabric covering is used on padding to improve comfort, then wettability and breathability are compromised
Solution Approach 1:
The fabric covering is selected or engineered to be porous, allowing air and moisture vapor to pass through while still providing the comfort benefits of fabric contact. The porous structure maintains breathability by permitting vapor transmission while the fabric layer provides comfort through soft contact with the skin.
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 promotes sweat evaporation and air circulation, improving comfort during use, especially in hot conditions, and allows for easy sanitation and maintenance, while maintaining the helmet's protective features.
Implementation Method 1
the aforesaid canalization structure conducts air flows starting from a first air intake opening and a second air intake opening toward a first air extraction opening and a second air extraction opening, respectively
Implementation Method 2
the human body takes advantage of the removal of heat given by the evaporation of the sweat for the purposes of automatically adjusting the surface temperature of the skin and scalp
Data Source
Figure 1~2
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Figure 5
AI summary
A safety helmet (10), including a rigid outer shell (11) and an inner part (11.1) made to absorb and deaden any impact endured by said helmet, and comprising an inner padding (14c) which provides a canalisation structure (16) for conducting air between said at least one air intake opening (12.1) and said at least one air extraction opening (13.1), characterized in that it comprises a cap (15), which, when the helmet is worn by said person, cooperates with said padding to provide a plurality of air channels at said canalizations of said padding and covers the head of the person at least at the padding itself.