Child Safety Seat Energy Absorber Selection by Weight Range
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Solution Overview
Problem
Existing child safety seats face challenges in optimizing energy absorption based on the unknown accident speed and varying passenger weights, requiring adaptive energy absorption elements that can effectively transfer energy during impacts while ensuring safety and usability.
Innovation Solution
A safety seat design featuring multiple energy absorption elements with different mechanical properties, connected via a connector system that selects the appropriate element based on the child's weight, allowing for non-elastic extension along an axis to absorb impact energy and create a visible deformation gap, indicating when the seat needs replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple energy absorption elements with different mechanical properties are used, then the adaptability to different child weights and accident speeds is improved, but the device complexity increases
Solution Approach 1:
The energy absorption system is divided into multiple discrete energy absorption elements, each with different mechanical properties (different energy absorption capacities). This segmentation allows the system to handle a wider range of impact scenarios by selecting the appropriate element, thereby improving adaptability without requiring a completely different system design for each scenario.
Solution Approach 2:
The connector system is designed to dynamically select which energy absorption element to engage based on the impact conditions and child weight. This dynamic selection mechanism allows the system to adapt to varying conditions automatically, improving versatility while maintaining a relatively simple overall structure through automated decision-making rather than manual configuration.
2Reliability
If a connector system that selects appropriate energy absorption element is implemented, then the energy absorption optimization is improved, but the ease of operation deteriorates
Solution Approach 1:
The connector system is designed to automatically select and engage the appropriate energy absorption element based on the impact conditions and child weight, without requiring manual intervention or complex user decisions. This self-service mechanism maintains reliability by optimizing energy absorption while preserving ease of operation, as the system performs the selection function autonomously during an accident scenario.
3Measurement precision
If visible deformation gap is created to indicate seat replacement, then the measurement precision of impact detection is improved, but the device complexity increases
Solution Approach 1:
The system creates a visible deformation gap that appears as a noticeable visual change (similar to color change principle) to indicate when the energy absorption element has been engaged and the seat needs replacement. This visual indicator provides precise impact detection information without requiring electronic sensors or complex detection systems, thereby improving measurement precision while maintaining simplicity.
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 ensures optimal energy absorption and safety by selecting the appropriate energy absorption element for the child's weight, limiting dynamic movement and providing a visible indicator for seat replacement, thus enhancing safety and usability in vehicle accidents.
Implementation Method 1
each of the at least two energy absorption elements is designed to absorb energy by non-elastic extension along an axis
Data Source
AI summary
A safety seat for a vehicle that comprises a static part attachable to an anchor of a vehicle, at least two energy absorption elements mounted on the static part, each designed to absorb a different amount of energy and a dynamic part adapted to accommodate a child and comprising at least one connector which is engaging at least one of the at least two energy absorption elements, the at least one engaged energy absorption element is adapted to a weight range of a child, so as to absorb impact energy applied on the dynamic part via the static part, thus extending along a longitudinal movement between the static part and the dynamic part.