Vehicle Seat Displaceable Platform for Sudden Deceleration
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Solution Overview
Problem
Existing vehicle seating assemblies fail to effectively regulate passenger position during sudden vehicle deceleration, lacking adequate mechanisms to limit movement and ensure passenger safety.
Innovation Solution
A vehicle seating assembly with a displaceable platform coupled to a carrier assembly, which deploys from a design position to a fully deployed position in response to sudden deceleration, featuring a retention mechanism and fuses to limit passenger movement, integrated with a seat cushion and seat frame assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a displaceable platform with retention mechanism is added to regulate passenger movement during sudden deceleration, then passenger safety is improved, but device complexity increases
Solution Approach 1:
The seat cushion is divided into a fixed portion and a displaceable platform portion. The displaceable platform can move independently relative to the carrier assembly, allowing it to deploy during sudden deceleration while maintaining a simple overall structure. This segmentation enables safety functionality without requiring a completely complex new system.
Solution Approach 2:
The retention mechanism transitions from a static connected state to a dynamic deployed state during sudden deceleration. The displaceable platform moves from its normal position to a deployed position where it engages with the carrier assembly to limit passenger movement. This dynamic behavior provides safety functionality only when needed, maintaining simplicity during normal operation.
2Reliability
If a retention mechanism is deployed to limit passenger movement during sudden deceleration, then passenger safety is improved, but manufacturing complexity increases
Solution Approach 1:
The retention mechanism is segmented into discrete components including the displaceable platform, carrier assembly elements, and connection features. This allows each component to be manufactured separately using standard processes and then assembled, reducing overall manufacturing complexity while providing the safety function.
Solution Approach 2:
The displaceable platform acts as an intermediary element between the passenger and the carrier assembly. It provides the retention function through simple geometric engagement features rather than complex mechanical mechanisms, making the system easier to manufacture while still effectively limiting passenger movement during sudden deceleration.
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 effectively regulates passenger movement during sudden deceleration, enhancing safety by limiting upward movement and directing passengers towards airbags or seat restraints, thereby reducing the risk of injury.
Implementation Method 1
a displaceable platform coupled to the carrier assembly and selectively deployable from a design position to a fully deployed position in response to a sudden deceleration of the vehicle
Implementation Method 2
the displaceable platform is coupled to the carrier assembly with a fuse extending between the displaceable platform and the panel; and the fuse breaks in response to a force indicative of the sudden deceleration of the vehicle
Implementation Method 3
the cross member includes a rotating joint defined by a housing that extends between the first and second opposing segments of the carrier and a rotating member disposed within the housing and is attached to the displaceable platform; the rotating member rotates within the housing when the displaceable platform moves between the design position and the fully deployed position
Implementation Method 4
a hinge assembly is disposed between the first portion and the second portion; the second portion is pivotably coupled to the first portion; the hinge assembly defines an axis about which the second portion rotates when the displaceable platform moves between the design position and the fully deployed position
Data Source
AI summary
A vehicle seating assembly including a seat cushion and a seat frame assembly with a carrier assembly and a displaceable platform coupled to the carrier assembly and selectively deployable from a design position to a fully deployed position in response to a sudden deceleration of the vehicle.