Body-Heated Backpack Compartment for Freeze Protection

Solution Overview

Problem

Existing backpacks fail to effectively prevent accessories from freezing in cold weather, necessitating the use of multiple specific covers or insulation materials, which is inconvenient and inefficient.

Innovation Solution

A backpack design incorporating a body-heated compartment formed by a wind and heat insulating material with a seal that contacts the user, combined with a heat transfer material to maintain warmth, ensuring items inside remain above freezing temperatures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple specific covers or insulation materials are used to protect accessories from freezing, then the protection effectiveness is improved, but the device complexity and ease of operation deteriorate

Engineering Contradiction:

Improveprotection effectivenessVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines multiple insulation functions into a single integrated shoulder strap structure. The shoulder strap integrates the wind and heat insulating material, heat transfer material, and body-heated compartment into one unified component, eliminating the need for separate covers and insulation materials while maintaining protection effectiveness.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The shoulder strap is designed to serve multiple functions simultaneously: it provides mechanical support for carrying the backpack, acts as a thermal insulator, transfers body heat to the compartment, and protects accessories from freezing. This multi-functional design eliminates the need for multiple separate protective components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If multiple specific covers or insulation materials are used to protect accessories from freezing, then the protection effectiveness is improved, but the ease of operation deteriorates

Engineering Contradiction:

Improveprotection effectivenessVSAvoidease of operation

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent combines multiple insulation functions into a single integrated shoulder strap structure. The shoulder strap integrates the wind and heat insulating material, heat transfer material, and body-heated compartment into one unified component, eliminating the need for separate covers and insulation materials while maintaining protection effectiveness.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The shoulder strap is designed to serve multiple functions simultaneously: it provides mechanical support for carrying the backpack, acts as a thermal insulator, transfers body heat to the compartment, and protects accessories from freezing. This multi-functional design eliminates the need for multiple separate protective components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Device complexity

If a body-heated compartment is integrated into the shoulder strap, then the need for multiple covers is eliminated, but the weight of the backpack increases

Engineering Contradiction:

Improvedevice complexityVSAvoidweight of backpack

Core Design Contradiction:

Device complexityVSWeight of moving object

Solution Approach 1:

The shoulder strap is designed to serve multiple functions simultaneously: it provides mechanical support for carrying the backpack, acts as a thermal insulator, transfers body heat to the compartment, and protects accessories from freezing. This multi-functional design eliminates the need for multiple separate protective components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent uses thin film materials for the wind and heat insulating layer and heat transfer layer. These thin flexible materials provide the necessary thermal protection functions while minimizing additional weight compared to traditional rigid insulation structures.

Inventive Principle:

Principle #30Flexible shells and thin films

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 maintains items within the compartment at temperatures above freezing, enhancing functionality and eliminating the need for multiple covers or insulation materials.

Implementation Method 1

a wind and heat insulating material (12) forming a body heated compartment (10)

Methodology Applied

Scientific EffectThermal insulation: Thermal Insulation

Implementation Method 2

combined with a heat transfer material to maintain warmth

Methodology Applied

Scientific EffectHeat conduction: Conduction (thermal)

Data Source

PatentEP3815572B1A backpack and method of producing the same

Publication Date: 2025.07.30 USWE SPORTS

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AI summary

A backpack comprising a wind and heat insulating material, the wind and heat insulating material forms a body heated compartment. The backpack further comprises a seal. The seal is connected to the body heated compartment and the seal is configured to contact a user of the backpack such that at least partly sealing the body heated compartment against the user.