Inflatable Bag Tie Anchoring for Motorcyclist Protection
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Solution Overview
Problem
Inflatable protection devices in garments, such as those worn by motorcyclists, face issues of lateral contraction and displacement during activation, leading to reduced protected surface area and potential exposure of body zones, requiring larger bag designs and increased charging capacity, which increases volume and cost, and fail to return to the initial configuration effectively.
Innovation Solution
The use of ties that connect the inflatable bag to the garment, allowing for tensile force along the perimetral edges to counteract lateral contraction and prevent displacement, ensuring the bag remains correctly positioned and returns to its initial configuration, thereby maintaining effective protection without the need for oversized bags.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the inflatable bag is made larger to compensate for lateral contraction, then the protected surface area is maintained, but the volume and cost of the device increase
Solution Approach 1:
The tie is pre-arranged and connected to the inflatable bag before activation. When the bag inflates, the pre-positioned tie immediately begins to counteract lateral contraction, preventing the bag from shrinking away from the body. This preliminary arrangement ensures that the bag maintains its protective coverage without needing excessive initial volume.
Solution Approach 2:
The tie dynamically changes the physical state of the inflatable bag by applying tensile force that counteracts lateral contraction. This force intervention modifies the bag's dimensional parameters during inflation, maintaining a more stable projected area on the body surface without requiring the bag to be oversized initially.
2Reliability
If the inflatable bag is made larger to prevent displacement, then protection coverage is maintained, but the device complexity and cost increase
Solution Approach 1:
The tie is pre-connected to the inflatable bag and positioned along its perimetral edges before activation. This preliminary configuration ensures that when the bag inflates, the tie is already in place to prevent displacement, eliminating the need for complex anchoring systems or oversized bags to achieve the same stabilizing effect.
3Area of stationary object
If ties are added to prevent lateral contraction, then the projected area is maintained, but the ease of manufacture decreases
Solution Approach 1:
The tie is made from flexible, thin material that can be easily integrated into the garment structure. This flexible construction allows the tie to be sewn or attached to the inflatable bag and garment lining without requiring complex manufacturing processes, while still effectively preventing lateral contraction and maintaining the bag's projected protective area.
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 solution reduces the need for larger bag dimensions, maintains effective protection by preventing exposure of body zones, and allows for efficient repositioning of the inflatable bag after activation, ensuring consistent safety and comfort without hindering movement or increasing costs.
Implementation Method 1
The tie (14) is intended to assume alternately an untensioned condition and a tensioned condition when the inflatable bag (13) assumes its rest configuration and its active configuration, respectively
Implementation Method 2
the elastic insert which was stretched following inflation of the underlying inflatable bag, is forced to return into its original untensioned configuration
Data Source
Figure 1A~1C
Figure 2~3
Figure 4~6
AI summary
The present invention relates to a garment 10 provided with an inflatable protection device 12 comprising an inflatable bag 13 designed to assume alternately a rest configuration, in which it is in a deflated state, and an active configuration, in which it is in an inflated state. In accordance with the invention, the inflatable bag 13 is fixed to the garment 10 by means of a tie 14 which connects a portion 15 of the garment 10 to a perimetral portion 16 of the inflatable bag 13. The tie 14 is intended to assume alternately an untensioned condition and a tensioned condition when the inflatable bag 13 assumes its rest configuration and its active configuration, respectively.