Backpack Frame Structure for Lumbar Load Transfer and Ventilation
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Solution Overview
Problem
Existing hiking backpacks lack improved carrying comfort, load transfer to the lumbar region, and effective back ventilation, leading to fatigue and discomfort during prolonged use.
Innovation Solution
A backpack frame that creates a ventilation space between the back and the back pocket, with an extension providing localized support to the lumbar region, featuring a frame with a structural portion and an extension that redistributes load to the hips via the iliac bones, using a shaped cylindrical metal bar or other materials for rigidity and elasticity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a frame is added to shape the back panel and create ventilation space, then back ventilation is improved, but device complexity increases
Solution Approach 1:
The frame is nested within the back pocket structure, with the back panel forming an outer shell and the frame embedded inside it. This nesting approach allows the frame to create ventilation space and provide structural support without adding external complexity to the backpack's overall structure.
Solution Approach 2:
The frame is divided into multiple segments including a lower part, upper part, and connecting portion. This segmentation allows each part to perform specific functions (load transfer, ventilation, shaping) while keeping the overall structure manageable and integrable into the backpack design.
2Strength
If the frame is made rigid to provide structural support, then load transfer capability is improved, but adaptability to back movements decreases
Solution Approach 1:
Different parts of the frame have different rigidity characteristics. The lower part and upper part are designed with specific rigidity for optimal load transfer to the iliac bones, while the connecting portion has adjusted rigidity to accommodate back movements. This local differentiation of mechanical properties allows the frame to simultaneously provide structural support and adapt to dynamic conditions.
3Ease of operation
If the frame extends to the lumbar region to provide localized support, then carrying comfort is improved, but device complexity increases
Solution Approach 1:
The frame extension serves multiple functions simultaneously: it provides localized support to the lumbar region for improved carrying comfort, maintains structural integrity for load transfer, and adapts to back movements through its elastic properties. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in 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
Enhances carrying comfort by reducing fatigue-related pain through improved load transfer and ventilation, allowing the frame to absorb movements and apply pressure to the lumbar area effectively.
Implementation Method 1
the frame creates a ventilation space between the back and the back panel
Implementation Method 2
The extension also provides elasticity to the frame, allowing it to absorb the backpack's movements
Implementation Method 3
allows for load transfer to the lumbar region, a support area that improves carrying comfort
Data Source
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AI summary
A backpack comprising: a pocket delimited by a back panel facing the user's back when the backpack is worn; a frame partially fixed to the back panel, the frame including a structural portion for shaping the back panel. The frame includes an extension, connected to the structural portion, extending towards the user's back from the structural portion, the extension being designed and arranged to define a support section located in the user's lumbar region when the backpack is worn. The structural portion of the frame forms a curve such that a middle portion of the structural portion is further away from the user's back than its upper and lower ends.