Backpack Auxiliary Handholds for Load Distribution and Fatigue Reduction
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Solution Overview
Problem
Conventional backpacks cause discomfort and fatigue during long-distance hiking or backpacking due to the constant strain on the user's hands and shoulders from carrying heavy loads.
Innovation Solution
The integration of a pair of auxiliary handholds, provided by an adjustable elongate strap forming a continuous loop, which can be secured to various mounting structures on the backpack, allowing users to maintain their arms in an elevated position and manipulate the backpack more comfortably.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If conventional backpacks are used for long-distance hiking, then the backpack can carry heavy loads, but the user experiences hand and shoulder fatigue from constant strain
Solution Approach 1:
An auxiliary strap system is introduced as an intermediary element between the user's hands and the backpack. The strap includes handholds that transfer the strain from the user's hands to the user's torso or backpack structure, reducing direct stress on the hands and shoulders while maintaining load carrying capacity
Solution Approach 2:
The strap system is divided into multiple segments including a main strap, handholds, and attachment points. This segmentation allows the force distribution to be divided across multiple contact points on the user's body, reducing concentration of stress on any single area such as the hands or shoulders
2Device complexity
If the backpack is designed with fixed shoulder straps, then the structure is simple, but the user cannot adjust the backpack position on the upper back
Solution Approach 1:
The strap system incorporates movable and adjustable components that allow the backpack position to be dynamically changed. The auxiliary strap can be adjusted in length and position, enabling the user to move the backpack to different locations on the upper back while maintaining a relatively simple overall structure
Solution Approach 2:
The auxiliary strap system serves multiple functions: it provides position adjustment capability, offers additional support, and can be configured in different ways. This multi-functionality is achieved without significantly increasing structural complexity, as the same basic strap components serve multiple purposes
Data Source
AI summary
A backpack is disclosed which includes a pack for accommodating a load, a pair of shoulder straps extending from the pack from which to haul the load, and an anti-fatigue arrangement including a respective auxiliary handhold at opposing ends thereof to provide the user with access to each auxiliary handhold at a respective location in front of each shoulder of the user. The auxiliary handholds enable a user to maintain his or her arms in an elevated position when using the backpack and to selectively manipulate the backpack on the upper back of the user. Methods of modifying a backpack having shoulder straps for carrying a load to include a pair of auxiliary handholds are also disclosed.