Integrated Child Seat Harness Load Distribution
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Solution Overview
Problem
Current aircraft seat designs and restraint systems are inadequate for safely securing and restraining children, as aftermarket child seats are not certified or designed for aircraft use, lack support, and have a significant weight penalty, making them cumbersome and ineffective in providing adequate protection during turbulence or crashes.
Innovation Solution
An integrated child seat is designed as an integral part of the passenger seat, with a five-point harness system that routes through the seat backrest and internal frame structure, reinforced with brackets to distribute load forces and provide improved mechanical stability, allowing the seat to be easily deployed and stowed without requiring installation or modification by flight crew.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a portable child seat is used in an airplane, then the child can be restrained, but the weight penalty is significant (approximately 15 lbs.) and the seat is cumbersome to install and transport
Solution Approach 1:
The patent combines the child restraint system with the aircraft seat itself, integrating the harness and support structures into the seat design. This eliminates the need for a separate portable child seat, thereby reducing weight while maintaining restraint functionality. The harness system is built into the seat frame, and the seat backrest is designed to provide both adult and child support when configured appropriately.
2Ease of operation
If a forward facing child seat is secured using the existing aircraft seat belt, then installation is simple, but the child seat lacks support on the top section and may not provide adequate protection during heavy turbulence or crashes
Solution Approach 1:
The patent segments the restraint system into multiple independent components: the aircraft seat belt for primary restraint, the seat backrest for structural support, and additional harness points for enhanced security. This segmentation allows each component to perform its specific function - the seat belt secures the child to the seat, while the backrest provides vertical support and prevents forward movement during turbulence.
Solution Approach 2:
The patent adds vertical support dimension to the child restraint system by utilizing the seat backrest structure. Instead of relying solely on the horizontal seat belt restraint, the backrest provides a vertical dimension of support that prevents the child from moving forward or upward during turbulence, thereby enhancing protection without complicating installation.
3Reliability
If aftermarket child seats are designed for automobile use, then they provide robust restraint, but they are not certified or designed for aircraft seat systems and may be too large for aircraft seats
Solution Approach 1:
The patent designs the aircraft seat to serve multiple functions: it can accommodate adult passengers normally, and when configured with the integrated harness system, it becomes a certified child restraint system. The seat backrest can be adjusted to provide appropriate support for both adults and children, making the same seat structure universally applicable to different passenger types without requiring separate specialized seats.
Data Source
AI summary
The present invention generally relates to passenger aircraft seats. Some examples provide systems for integrating a child seat into a certified aircraft seat. Some examples include a passenger seat backrest having an integrated child seat. An integrated child seat base may be moved between a stowed position and a deployed position. When in the stowed position, the integrated child seat base may fit within a recessed surface of the seat backrest and the seat may then accommodate an adult passenger. When in a deployed position, the integrated child seat may then accommodate a child passenger. The integrated seat may include a harness system that extends through the seat backrest and couples with an internal support structure of seat backrest. In some embodiments the mounting points of the harness system may be reinforced with stiff brackets attached to the internal support structure.