Backpack Strap Redirection for Load Distribution
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Solution Overview
Problem
Conventional backpacks distribute weight poorly, leading to discomfort and instability, as the weight is borne mainly from the top and can cause the user to lean forward to compensate, resulting in strain on the shoulders and neck.
Innovation Solution
The backpack design features a strap arrangement with carrying straps that extend from the bottom, redirecting forces to support the load from the sides and rear, using stiffening members and adjustable straps to distribute weight evenly, and includes piezoelectric material for generating electricity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the weight in the backpack is heavy, then the carrying capacity is improved, but the user comfort deteriorates as the backpack pulls the user backwardly
Solution Approach 1:
The patent introduces a hip belt that extends around the user's hip, adding a new dimensional support path. The strap arrangement redirects forces from the shoulders to the hip area, distributing weight across multiple body dimensions (shoulders + hip) rather than relying solely on shoulder straps, thereby improving comfort while maintaining carrying capacity.
Solution Approach 2:
The strap arrangement is divided into multiple functional segments: carrying straps for shoulder support, a hip belt for pelvic support, and redirecting members that transfer forces between these segments. This segmentation allows each component to specialize in supporting specific portions of the load, improving overall comfort and weight distribution.
2Device complexity
If the weight is borne from the top part of the backpack, then the structural simplicity is improved, but the stability deteriorates as the user must lean forward to maintain balance
Solution Approach 1:
The hip belt extends around the user's hip in a new dimensional path, creating a rearward-extending support structure. This redirects the center of gravity support from the top/shoulder area to include the hip region, allowing the user to maintain an upright posture without leaning forward, thereby improving stability while adding moderate structural complexity.
3Ease of operation
If the strap arrangement redirects forces to support the load from the sides, then the weight distribution is improved, but the device complexity increases with additional redirecting members
Solution Approach 1:
The redirecting members serve multiple functions: they redirect forces from the carrying straps to the hip belt, provide structural attachment points, and help position the pack correctly on the user's body. This multi-functionality reduces the need for separate components, thereby improving weight distribution while limiting the increase in overall device complexity.
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
This design allows for more comfortable and stable carrying of heavier loads, reducing strain on the shoulders and neck, and providing additional support to prevent the pack from sliding or falling, while also enabling the generation of electricity.
Implementation Method 1
The strap arrangement can include piezoelectric material for generating electricity.
Data Source
AI summary
A backpack including a pack portion having a top, a bottom, a front, a rear and two sides. A strap arrangement can also be included for carrying the pack portion as a backpack. The strap arrangement can have a pair of carrying straps. Each carrying strap can be secured to the pack portion at about the bottom and extend upwardly along respective sides of the pack portion, and redirected at about the top of said respective sides to extend around to the rear of the pack portion, and being redirected at about the top of the rear to extend downwardly for securement at about the bottom of the pack portion at the rear. The strap arrangement can redirect forces to support a load in the pack portion from the sides of the pack portion.