Wearable Inflatable Band for Head Impact Protection
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Solution Overview
Problem
Current wearable protection devices do not effectively provide shock absorption outside of helmets, and existing airbag technologies are primarily designed for vehicle interiors, lacking solutions for external or expandable protection in scenarios like sports or falls.
Innovation Solution
An inflatable band that resembles a sweat band, activated by proximity sensors or inertia switches, expands to form a cushion interface between the wearer and the ground or other surfaces, using compressed gas to absorb shock and prevent injuries, optionally integrated with helmets for enhanced protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If airbag technology is adapted for wearable protection outside vehicles, then shock absorption capability is improved, but device complexity increases due to space constraints and activation requirements
Solution Approach 1:
The inflatable airbag is nested within a compact housing that contains the compressed gas reservoir. The entire protection device fits within or integrates with helmet structure, allowing the large-volume airbag to be stored in a small space until deployment. This nesting principle resolves the contradiction by enabling wearable shock protection without excessive device complexity.
Solution Approach 2:
Compressed gas is pre-stored in a reservoir before impact occurs. The activation mechanism is pre-positioned and ready to release the gas immediately upon impact detection. This preliminary preparation allows rapid inflation without complex real-time gas generation systems, reducing overall device complexity while maintaining effective shock absorption.
2Loss of time
If the inflatable band is activated rapidly to provide immediate protection, then response time is improved, but risk of accidental activation increases
Solution Approach 1:
The activation mechanism is designed with features that prevent premature triggering, such as inertia-based sensors that distinguish between normal movement and actual impact, or dual-threshold detection systems. This preliminary protective measure against false activation allows the system to maintain rapid response capability while improving reliability by filtering out spurious activation signals.
3Object-affected harmful factors
If the airbag is made visible as a protection device, then safety awareness is improved, but aesthetic appeal deteriorates
Solution Approach 1:
The protection device is designed to be localized and integrated into specific areas such as the helmet structure or worn under clothing in strategic positions. This allows the airbag to provide safety awareness and protection where needed while maintaining aesthetic appearance in visible areas. The protective function is concentrated in specific locations rather than requiring full visibility of the entire device.
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
The inflatable band provides immediate shock absorption and injury prevention in various scenarios, such as falls or collisions, while also protecting others from helmet impacts, offering a wearable and deployable solution for external protection that complements traditional helmet technology.
Implementation Method 1
The microscopic mechanical element moves in response to rapid deceleration, and this motion causes a change in capacitance, which is detected by the electronics on the chip that then sends a signal to fire the airbag
Implementation Method 2
An igniter starts a rapid chemical reaction generating primarily nitrogen gas (N2) to fill the airbag making it deploy through the module cover
Implementation Method 3
The band may be inflated by an inner chamber or chambers of highly compressed gas. Upon actuation, the tube is opened to allow gas to enter the expandable band
Data Source
AI summary
A method and device adapted to be worn on the head of a user comprising: at least one inflatable band, one of a proximity sensor, inertia switch, or gravity type switch, a gas releasing device which causes the inflatable band to inflate when the proximity sensor or inertia switch is actuated, whereby when the device is worn on the head of the user is automatically activated in the case of a fall or impact to cushion the head of the user.