Seat for vehicle
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Solution Overview
Problem
Armoured vehicle seats fail to effectively absorb and distribute the impact of mine-type attacks due to obstacles below the seating part, limiting the pivoting motion and compromising passenger safety.
Innovation Solution
A vehicle seat design featuring a seating part that pivots about a link, with adjacent panels capable of fold-back movement and a deformable structure, including a textile belt and torsion bar, to absorb impact energy and overcome obstacles, allowing greater pivoting angle and improved protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the seating part is designed to pivot downward to absorb impact, then passenger protection is improved, but the pivoting motion is limited by obstacles below the seating part
Solution Approach 1:
The seating part is divided into multiple adjacent panels that can fold back relative to each other. This segmentation allows the seating part to collapse in a compact manner, reducing the space required for pivoting motion and enabling the seat to overcome obstacles more effectively while maintaining impact absorption capability.
Solution Approach 2:
The adjacent panels are designed to fold back and nest against each other during impact. This nesting configuration allows the seating part to reduce its vertical profile significantly, enabling it to pivot further without being blocked by obstacles on the floor, thereby improving both pivoting distance and passenger protection.
2Stability of the object's composition
If calibrated stops are used to maintain the seating part in position, then structural stability is improved, but they break upon impact failing to limit the transmission of strong impact
Solution Approach 1:
The stop mechanism is designed to be dynamic rather than static. The stop engages with the seating part during normal use to maintain stability, but is configured to release and allow fold-back movement when impact forces exceed a certain threshold. This dynamic behavior enables the stop to provide stability when needed and dissipate impact energy when subjected to mine-type attacks.
3Loss of energy
If the seating part pivots further to overcome obstacles, then impact energy absorption is improved, but the structural complexity increases
Solution Approach 1:
The seating part is segmented into adjacent panels that fold back relative to each other about an axis parallel to the pivot link. This segmentation enables the seat to achieve greater pivoting angles and overcome obstacles more effectively while distributing the structural complexity across multiple simple, modular panel components rather than requiring a single complex mechanism.
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
Enhances passenger safety by allowing the seat to pivot further and absorb impact energy, ensuring effective protection against mine-type attacks by overcoming obstacles and maintaining horizontal positioning of the front panel during impact.
Implementation Method 1
the deformable structure includes a textile belt comprising several folds connected by a tear-calibrated seam
Implementation Method 2
the axis between both adjacent panels of the seating part includes a torsion bar
Implementation Method 3
a seating part pivoting about a pivot link, the pivot link allowing the seating part to be lowered into a substantially horizontal position or lifted against a back rest
Data Source
AI summary
A seat for a vehicle, including a seating part pivoting about a pivot connection, a pivot connection allowing the seating part to be lowered into a substantially horizontal position or lifted against a back rest, the lowering of the seating part being limited in the course thereof by at least one first abutment that can release the lowering following an impact, the being characterized in that the seating part includes at least two adjacent panels that can carry out a fold-back movement in relation to each other about an axis parallel to the pivot connection between the seating part and the back rest in such a way as to be able to bring the upper faces of the panels towards each other.