Modular Bag Weight Distribution via Segmented Design

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Solution Overview

Problem

Conventional backpacks concentrate weight on the user's back, leading to muscle strains and injuries, and require users to put them down to access small items, limiting mobility and convenience.

Innovation Solution

A modular bag design featuring two interconnected bags, adjustable straps, and fasteners that allow the bags to be carried on the back and front of the body, distributing weight evenly and enabling easy access to items.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a conventional backpack is used, then the user can carry items, but the weight is concentrated on the back causing muscle strains and injuries

Engineering Contradiction:
Improveweight distributionVSAvoidmuscle strains and injuries
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The backpack is divided into two separate bags: a first bag carried on the back and a second bag carried in front. This segmentation distributes the weight across different parts of the body (back and front), preventing concentration of weight on the back and reducing muscle strains and injuries.

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If a conventional backpack is used, then items can be stored, but users must put down the backpack to access small items like lipsticks and water bottles

Engineering Contradiction:
Improveaccess to itemsVSAvoidtime to access items
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The backpack system is segmented into two bags with different functions: the first bag on the back for general storage and the second bag in front for frequently accessed items. This allows users to keep the backpack on their person while easily accessing small items from the front bag without needing to put it down.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The second bag acts as an intermediary carrier for frequently used items, positioned in front of the body for easy access. This intermediary structure allows users to retrieve items like lipsticks and water bottles quickly without removing the main backpack from their back.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Device complexity

If a single backpack is used, then the structure is simple, but the weight distribution creates imbalance and strain

Engineering Contradiction:
Improvebag structureVSAvoidweight balance
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The single backpack structure is segmented into two separate bags (first bag and second bag) that can be carried simultaneously on the back and front. This segmentation creates a balanced weight distribution across the body, improving ease of operation while maintaining reasonable structural complexity through modular design.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS20180055198A1Modular bag
Publication Date: 2018.03.01 CHANG TENG YAO
  • US20180055198A1 patent drawing
  • US20180055198A1 patent drawing
  • US20180055198A1 patent drawing

AI summary

A modular bag includes first and second bags, pairs of first and second straps, first to four fasteners, wherein the first straps are provided on the first bag, and each includes a shoulder band, an adjustment ring, and an adjustment band, the shoulder band is connected to an upper portion of the first bag, the adjustment ring is connected to the shoulder band. The adjustment band is connected to a bottom of the first bag, and passes through the adjustment ring, which forms a free section, the first fasteners are provided on the shoulder bands, the second fasteners are provided on the free sections, the second straps are connected to an upper portion of the second bag, the third fasteners are respectively provided on the second straps, and detachably fastened to the first fasteners, and the fourth fasteners are respectively provided on the second bag and detachably fastened to the second fasteners.