Detachable Side Bag with Electric Heating Film for Hand Warming

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Solution Overview

Problem

Existing multifunctional bags with hand warming capabilities are impractical due to limited storage space, reliance on heavy hot water bottles, poor warming efficiency, and cumbersome designs, making them unsuitable for outdoor use.

Innovation Solution

A multifunctional bag with a detachable side bag featuring a double-layer structure, electric heating material connected to a power bank, inflatable airbag, and massager, allowing for efficient hand warming, expanded storage, and versatile use as a pillow or back cushion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If a hot water bottle is used for hand warming, then hand warming function is achieved, but the bag becomes heavy and inconvenient to carry

Engineering Contradiction:

Improvehand warming capabilityVSAvoidbag weight

Core Design Contradiction:

TemperatureVSWeight of moving object

Solution Approach 1:

The patent replaces the mechanical/physical system of hot water bottles with an electric heating system. Electric heating films are integrated into the bag structure, powered by rechargeable battery packs, substituting the need for heavy hot water bottles while maintaining the hand-warming function through electrical energy conversion to thermal energy.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the energy source parameter from thermal energy stored in hot water to electrical energy stored in batteries. This parameter change enables lighter weight, controllable heating intensity, and reusable energy supply through recharging, directly addressing the weight and convenience issues of hot water bottles.

Inventive Principle:

Principle #35Parameter changes

2Temperature

If the bag cover is disassembled for hand warming, then hand warming performance is improved, but the bag loses storage function and becomes cumbersome

Engineering Contradiction:

Improvehand warming performanceVSAvoidstorage and warming functionality

Core Design Contradiction:

TemperatureVSAdaptability or versatility

Solution Approach 1:

The patent merges the hand-warming function and storage function into a single integrated bag structure. The electric heating films are embedded within the bag cover and body, allowing the bag to simultaneously provide storage capacity and active hand-warming without requiring disassembly, thus maintaining versatility in both functions.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent creates a multi-functional bag that serves both as a storage container and an active heating device. The integrated electric heating system allows the same bag structure to fulfill multiple purposes: storing items during the day and providing hand-warming when needed, eliminating the need for separate devices or disassembly.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Temperature

If thick flannelette material is used for the hand warmer, then warming effect is improved, but the material is easy to be stained with dust and is inconvenient to clean

Engineering Contradiction:

Improvewarming effectVSAvoidcleanability

Core Design Contradiction:

TemperatureVSEase of manufacture

Solution Approach 1:

The patent uses thin electric heating films instead of thick flannelette materials. These films are smooth, non-porous surfaces that do not trap dust or stains, making them easy to wipe clean. The heating function is achieved through the electrical resistance of the thin film rather than through thick insulating material, simultaneously improving cleanability while maintaining warming effect.

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 solution maintains original storage capacity, provides effective and lightweight hand warming, and offers additional functions like massage and adjustable support, making it suitable for outdoor use in cold conditions while being easy to clean and practical.

Implementation Method 1

the side bag is mounted with an electric heating material, and the electric heating material is connected to an external power bank through a wire

Methodology Applied

Scientific EffectJoule heating: Joule Heating

Data Source

PatentUS20230232949A1Multifunctional Bag

Publication Date: 2023.07.27 PETERPOINT XIAMEN IMP & EXP CO LTD

AI summary

The present disclosure discloses a multifunctional bag, including a bag body provided with a side bag at one side of the bag body. The side bag is detachably fixed on the bag body, the side bag has a double-layer structure formed by stitching a shell fabric and a lining. The side bag is mounted with an electric heating material, and the electric heating material is connected to an external power bank through a wire. Not only the original storage function of the bag is maintained, but also an excellent hand warming function is added. It is suitable for use in cold places and can be applied to various bags.