Child Safety Seat Sidewall Buffering for Side Impact Energy Absorption
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Solution Overview
Problem
Traditional child safety seats with side impact protection structures often experience undesirable deformations during side collisions, which can compromise their protective function.
Innovation Solution
A child safety seat design featuring a seat shell with a backrest and sidewalls, incorporating a rotatable buffering part that can pivot between a stowed and deployed position, urging the sidewall to bend inwardly during a sideways collision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional side impact protection structures are used, then side collision energy can be dissipated, but undesirable deformations occur in the sidewalls which compromise protective function
Solution Approach 1:
The buffering part is designed to be rotatable relative to the sidewall, transitioning from a static structure to a dynamic one. During side impact, it rotates from an initial position to a buffering position, enabling controlled energy absorption while maintaining structural reliability through movement rather than fixed deformation
Solution Approach 2:
The buffering part is pre-positioned to rotate into a buffering position during side impact. This preliminary configuration allows it to actively urge the sidewall to bend inwardly before the collision force fully acts on the structure, controlling the deformation process rather than passively accepting undesirable deformation
2Loss of energy
If the buffering part is positioned to urge the sidewall to bend inwardly, then side collision energy is effectively dissipated, but the device complexity increases due to the rotatable mechanism
Solution Approach 1:
The side impact protection function is segmented into two independent components: the buffering part that rotates to absorb energy, and the sidewall that provides structural support. This segmentation allows each component to be optimized for its specific function while simplifying the overall design by separating the energy absorption mechanism from the structural framework
Solution Approach 2:
The buffering part utilizes the collision force itself to rotate into the buffering position and urge the sidewall to bend inwardly. The impact energy automatically activates the buffering mechanism without requiring external sensors, actuators, or control systems, thereby achieving energy dissipation while minimizing device complexity
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 design provides enhanced protection for children during side collisions by effectively dissipating impact energy through controlled deformation of the sidewall, thereby improving safety and reducing adverse effects on the child's safety.
Implementation Method 1
the buffering part urges the sidewall to bend inwardly
Data Source
AI summary
A child safety seat includes a seat shell and a buffering part. The seat shell includes a backrest portion having a front surface and at least one sidewall arranged at a side of the front surface, and an opening is formed in the sidewall. The buffering part is arranged at the sidewall, the buffering part being rotatable relative to the sidewall between a first position and a second position, wherein the buffering part is positioned at the sidewall such that during a sideways collision the buffering part urges the sidewall to bend inwardly.