Rotatable Sidewall Buffering in Child Safety Seats for Side Impact

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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 rotatable buffering part integrated into the sidewall that bends inward during a sideways collision, dissipating impact energy and enhancing protection by urging the sidewall to deform inwardly.

Engineering Contradictions & Design Principles

VSEngineering 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 during side collision

Engineering Contradiction:

Improveside collision energy dissipationVSAvoidsidewall deformation

Core Design Contradiction:

Loss of energyVSShape

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 collision, the buffering part rotates and urges the sidewall to bend inwardly in a controlled manner, allowing the structure to adapt to impact forces while maintaining protective function and avoiding undesirable deformations

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The invention changes the mechanical state of the sidewall from rigid to flexible during impact by introducing the rotatable buffering part. This allows the sidewall to bend inwardly under controlled conditions during side collision, transforming the deformation characteristic from undesirable to functional for energy absorption

Inventive Principle:

Principle #35Parameter changes

2Reliability

If the buffering part is positioned to urge the sidewall to bend inwardly, then protection during side collision is improved, but the device complexity increases

Engineering Contradiction:

Improveside collision protectionVSAvoidbuffering mechanism complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The side impact protection structure is segmented into distinct components: the buffering part and the sidewall. This segmentation allows the buffering part to be independently positioned and rotated to urge the sidewall inwardly, providing reliable protection while keeping each component relatively simple in design

Inventive Principle:

Principle #1Segmentation

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 improved protection for children during side collisions by effectively dissipating impact energy and maintaining the structural integrity of the seat, making it safer in use.

Implementation Method 1

during a sideways collision the buffering part urges the sidewall to bend inwardly

Methodology Applied

Scientific EffectEnergy dissipation through deformation: Deformation

Data Source

PatentUS20250001917A1Child safety seat

Publication Date: 2025.01.02 BAMBINO PREZIOSO SWITZERLAND AG

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.