Passenger Seat Assembly With Adaptive Fire Shielding
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Solution Overview
Problem
Existing passenger transport seating arrangements lack effective fire protection, particularly in the context of tightened fire safety standards, risking vehicle damage and passenger safety due to potential fires originating from seat cushions.
Innovation Solution
A seating arrangement with a heat/fire shielding device comprising plate-like elements made of fire-resistant materials or metals that displace or deform towards a heat or fire source, effectively containing the fire and preventing its spread by integrating into the backrest element, often with padding layers for occupant comfort and using mechanisms like thermobimetal for deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional seat cushion materials are used, then comfort and cost are favorable, but fire protection is insufficient
Solution Approach 1:
The heat shielding device is nested within the existing seat structure, specifically positioned between the seat cushion and the backrest. The plate-like element is integrated into the lumbar support region of the backrest, forming a compact arrangement that adds fire protection without significantly increasing overall structural complexity
Solution Approach 2:
A plate-like heat shielding element is introduced as an intermediary component between the potential fire source (seat cushion) and the backrest. This mediator absorbs and reflects heat, preventing direct heat transfer to the backrest while maintaining the existing seat structure
2Reliability
If heat shielding devices are added, then fire protection is improved, but device complexity increases
Solution Approach 1:
The heat shielding device is implemented locally in the lumbar support region of the backrest rather than throughout the entire seat structure. The plate-like element is positioned specifically where heat transfer to the backrest is most critical, providing targeted fire protection while minimizing added complexity
Solution Approach 2:
The plate-like element is designed with the capability to deform or displace in response to heat exposure. This dynamic response allows the shielding device to actively adapt to thermal conditions, improving protection effectiveness without requiring complex control systems
3Reliability
If plate-like elements are positioned to shield from fire, then fire spread is prevented, but occupant comfort may be compromised
Solution Approach 1:
The plate-like heat shielding element is nested within the lumbar support region of the backrest, positioned behind the padding layers. This nesting arrangement allows the shielding device to function effectively while being concealed within the existing seat structure, maintaining occupant comfort without compromising fire containment
Solution Approach 2:
The seat design incorporates padding layers in front of the plate-like heat shielding element, providing a cushioning barrier between the rigid shielding plate and the occupant. This prior cushioning ensures occupant comfort is maintained while the heat shielding element performs its fire containment function
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 solution provides enhanced fire protection by shielding the backrest from fire and preventing interior spread, maintaining comfort while meeting stringent fire safety standards without compromising passenger safety.
Implementation Method 1
at least one plate-like element is deformed at least partially towards the heat and/or fire source
Implementation Method 2
using mechanisms like thermobimetal for deformation
Implementation Method 3
at least one plate-like element is displaced at least partially towards the heat and/or fire source
Implementation Method 4
The at least one plate-like element thus serves as an effective heat/fire shield, which effectively and simply contains or prevents the spread of the fire
Implementation Method 5
heat source and/or fire is at least partially covered from above by the at least one plate-like element
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention relates to a seating arrangement for a means of transporting persons comprising a frame element on which a backrest element and a seat part are arranged, wherein the seating arrangement comprises at least one heat/fire shielding device which comprises at least one plate-like element, wherein the at least heat/fire shielding device is designed and provided such that, in the event of a heat and/or fire source occurring, the plate-like element is at least partially displaced towards the heat and/or fire source or is at least partially deformed towards the heat and/or fire source.