Child Backpack Carrier with Dual-Shell Impact Protection Structure

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Solution Overview

Problem

Existing child backpacks lack impact protection for the child's head and body, increasing the risk of injury from falls or collisions with stationary objects.

Innovation Solution

A protective child carrier with a dual-shell structure featuring impact-resistant outer shells and compressible foam inner surfaces, connected by a fabric hinge that allows rotational movement, providing protection against deceleration injuries and distributing impact forces across a wider area.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a rigid protective shell is added to protect the child's head and body, then impact protection is improved, but the weight and bulk of the backpack increases

Engineering Contradiction:

Improveimpact protectionVSAvoidbackpack weight

Core Design Contradiction:

ReliabilityVSWeight of moving object

Solution Approach 1:

The protective shell is divided into multiple segments including a head portion, torso portion, and leg portions that can be separately positioned and adjusted. This segmentation allows the protective elements to be distributed only where needed rather than creating a single bulky structure, reducing overall weight while maintaining protection coverage.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The protective shell provides enhanced protection specifically at critical areas such as the head and torso where impact protection is most needed, rather than uniformly protecting the entire backpack. This localized approach concentrates protective materials where they provide maximum benefit while minimizing unnecessary weight in less critical areas.

Inventive Principle:

Principle #3Local quality

2Reliability

If a rigid protective shell is added to prevent penetration from sharp objects, then safety is improved, but the comfort and flexibility of the backpack deteriorates

Engineering Contradiction:

Improveprotection from sharp objectsVSAvoidbackpack comfort

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The protective shell is constructed using composite materials that combine rigid outer layers for impact resistance and penetration protection with softer inner layers that provide comfort against the child's body. This multi-material construction allows the shell to simultaneously provide hard protection and comfortable contact.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The protective shell incorporates flexible elements and thin film structures that allow the shell to conform to the backpack's shape and movement, preventing the rigid structure from creating discomfort or restricting the backpack's flexibility during use.

Inventive Principle:

Principle #30Flexible shells and thin films

3Force

If the protective shell is made fully rigid to spread impact forces, then impact distribution is improved, but the ability to absorb impact energy through deformation is reduced

Engineering Contradiction:

Improveimpact force distributionVSAvoidimpact energy absorption

Core Design Contradiction:

ForceVSStrength

Solution Approach 1:

The protective shell incorporates materials and structures with varying rigidity parameters throughout its construction. Certain areas have higher rigidity to spread impact forces, while other areas have lower rigidity to allow controlled deformation and energy absorption. This gradient of mechanical properties optimizes both force distribution and energy absorption.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The protective shell includes pre-positioned cushioning elements and energy-absorbing structures designed to deform in controlled ways during impact events. These elements are positioned beforehand to absorb impact energy through deformation while the rigid portions of the shell simultaneously spread the impact forces across a wider area.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

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 child carrier effectively reduces the risk of cranial and body injuries by distributing impact forces and preventing penetration from sharp objects, while maintaining comfort and ease of use through adjustable attachments and padding.

Implementation Method 1

the upper shell and lower shell having an expanded foam inner surface which crushes upon application of a sufficiently high force to protect a child in the protective carrier

Methodology Applied

Scientific EffectCompression: Compression

Implementation Method 2

the upper shell and lower shell having an impact resistant upper outer surface which resists deflection from contact forces, and also spreads point impact forces to a wider area surrounding the point of impact

Methodology Applied

Scientific EffectImpact Force: Impact Force

Data Source

PatentUS10271665B1Backpack with protective shell for safely transporting a child

Publication Date: 2019.04.30 TITO TERESA

AI summary

A protective child carrier has an upper shell having a rigid outer surface and an expanded foam inner surface, the lower part of which is coupled to a lower shell also having a rigid outer surface and expanded foam inner surface. The upper shell and lower shell joined with an articulating fabric joint, the upper shell and lower shell attached to a semi-rigid back support at the top using removable fabric sidewalls which have removable attachments at the semi-rigid back support, and are attached to the semi-rigid back supports. The semi-rigid back support has shoulder pads attached at the top and bottom of the rigid back support.