Fireproof Buffering Structure for Child Car Seat Impact Protection

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Solution Overview

Problem

Conventional child safety car seat buffering structures are either flammable and lack impact absorption or provide adequate impact absorption but compromise on safety due to reduced hardness and comfort when using flame-retardant materials.

Innovation Solution

A child safety car seat design incorporating a fireproof buffering structure composed of a buffering plate and a fireproof plate, where the fireproof plate has a lower combustion rate and is positioned closer to the seating space, combining impact absorption with flame retardancy, using materials like polyethylene, polypropylene, and botanical cotton, and arranged in multiple layers for enhanced safety and comfort.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If conventional foams (EPP, EPS, EPE) are used for buffering structures, then impact absorbing capacity is improved, but flammability increases and combustion rate becomes higher

Engineering Contradiction:

Improveimpact absorbing capacityVSAvoidflammability

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent applies composite materials by combining foam material (for impact absorption) with flame-retardant material (for fire resistance) into a single integrated buffering structure. This composite approach allows the structure to simultaneously achieve both impact absorption and flame retardancy, resolving the contradiction between these two properties.

Inventive Principle:

Principle #40Composite materials

2Object-affected harmful factors

If flame-retardant material is used to replace foams, then flammability is reduced, but hardness increases and impact absorbing capacity decreases

Engineering Contradiction:

ImproveflammabilityVSAvoidimpact absorbing capacity

Core Design Contradiction:

Object-affected harmful factorsVSStrength

Solution Approach 1:

The buffering structure uses a composite of foam material and flame-retardant material, where the foam component maintains impact absorption properties while the flame-retardant component provides fire resistance. This composite solution avoids the excessive hardness problem of pure flame-retardant materials while ensuring adequate fire protection.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent applies local quality by having different material zones within the buffering structure - the foam material provides impact absorption in areas subject to collision, while the flame-retardant material provides fire resistance in areas exposed to fire hazards. This localized material distribution optimizes both functions without compromising overall performance.

Inventive Principle:

Principle #3Local quality

3Ease of operation

If buffering structure is made softer for comfort, then comfort is improved, but flame-retardant effect is reduced

Engineering Contradiction:

ImprovecomfortVSAvoidcombustion rate

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The composite buffering structure combines soft foam material (providing comfort) with flame-retardant material (providing fire resistance). The foam layer maintains softness and comfort for the child, while the integrated flame-retardant layer ensures fire protection, resolving the contradiction between comfort and fire safety.

Inventive Principle:

Principle #40Composite materials

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 fireproof buffering structure effectively reduces the combustion rate while maintaining impact absorption capabilities, providing a safer and more comfortable seating environment during crashes.

Implementation Method 1

the fireproof plate is made of at least one of polyethylene (PE), polypropylene (PP), expanded polystyrene (EPS), expanded polypropylene (EPP), expanded polystyrene (EPO), fireproof foam, ethylene-vinylacetate copolymer (EVA), and botanical cotton

Methodology Applied

Scientific EffectFlame retardancy:

Implementation Method 2

The buffering plate is a foam plate with a density of substantially between 75 kg/m3 and 98 kg/m3

Methodology Applied

Scientific EffectImpact absorption:

Data Source

PatentUS20240327713A1Child safety car seat

Publication Date: 2024.10.03 WONDERLAND SWITZERLAND AG

AI summary

The present application discloses a child safety car seat having a main body and a fireproof buffering structure disposed on the main body. The fireproof buffering structure includes a buffering plate and a fireproof plate attached to or neighboring to the buffering plate, and the fireproof plate is closer to a seating space of the child safety car seat than the buffering plate. In contrast to conventional child safety car seats, the fireproof buffering structure of the present application adopts the combined buffering plate and fireproof plate. The buffering plate has good impact absorbing capacity for providing a soft and comfortable seating environment and buffering and protection effects during a crash accident, and the fireproof plate can reduce the combustion rate of the integral structure when catching fire. Therefore, the child safety car seat achieves the purposes of safety and comfort.