Adjustable Backpack Straps and Hip Belt for Ergonomic Load Fit

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Solution Overview

Problem

Existing backpacks struggle to provide a comfortable and ergonomic fit for individuals with varying anatomies, leading to discomfort and inefficient load distribution.

Innovation Solution

The backpack features adjustable shoulder straps and hip belts that can be customized to fit different shoulder and hip sizes through the use of hook and loop fasteners, snap fasteners, and buckles, allowing for adjustable lengths and angles to accommodate individual anatomies.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If fixed-length shoulder straps and hip belts are used, then the backpack structure is simple, but it cannot accommodate individuals with varying anatomies leading to discomfort and inefficient load distribution

Engineering Contradiction:
Improveadaptability to different anatomiesVSAvoidadjustment mechanism complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The shoulder straps and hip belts are designed with adjustable lengths and angles, transforming fixed components into dynamic, adaptable elements. Multiple connection positions and angular adjustments allow the backpack to adapt to different shoulder widths, hip sizes, and anatomical variations, directly resolving the contradiction between simplicity and adaptability

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention implements adjustable parameters including strap length, connection position, and angular orientation. These parameter changes enable the backpack to accommodate various anatomical dimensions while maintaining structural integrity, achieving versatility without requiring completely different backpack designs

Inventive Principle:
Principle #35Parameter changes

2Ease of operation

If adjustable shoulder straps and hip belts are implemented, then comfort and load distribution are improved, but the device complexity increases

Engineering Contradiction:
Improvecomfort and ergonomicsVSAvoidadjustment mechanism complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The adjustment mechanism is segmented into modular components: adjustable shoulder straps with multiple connection points, adjustable hip belts with independent angle adjustment, and separate fastening systems. This segmentation allows each component to be optimized independently while maintaining overall simplicity and user comfort

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The adjustment mechanisms serve multiple functions: length adjustment for different body sizes, angle adjustment for ergonomic positioning, and load distribution optimization. This multi-functionality consolidates what could be multiple separate mechanisms into integrated adjustment systems, reducing overall complexity while improving comfort

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Stability of the object's composition

If customizable fit options are provided, then load stability is enhanced, but the number of components and adjustment mechanisms increases

Engineering Contradiction:
Improveload stabilityVSAvoidnumber of components
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The adjustable connection points and angular adjustments create a dynamic system that can be customized for optimal load stability. The ability to reposition connection points on the frame and adjust strap angles allows users to fine-tune load distribution and stability according to their specific needs, achieving enhanced stability without requiring additional structural components

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP4449939B1Adjustable backpack
Publication Date: 2025.12.31 AMER SPORTS CANADA INC
  • EP4449939B1 patent drawingFigure 1~2
  • EP4449939B1 patent drawingFigure 3A~3B
  • EP4449939B1 patent drawingFigure 4~5

AI summary

A backpack may include a pack portion having a backside having a first slot and a frame having a second slot, wherein a flexible end portion of the shoulder strap passes through the first slot in the second slot and is adjustably connected to the frame to adjust a length of the flexible end portion of the shoulder strap that extends beyond the first slot. A backpack may include a hip belt having a rear portion connected to a frame, wherein the rear portion has left and right end portions that are repositionable at different angles relative to one another.