Frameless Backpack Support Structure for Load Transfer and Airflow
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing frameless backpacks, including upland game vests, fail to effectively transfer weight from the shoulders to the hips, leading to discomfort and fatigue during extended use due to inadequate load distribution, and often have bulkiness and rigidity issues.
Innovation Solution
A frameless backpack design featuring a shoulder strap, bag walls with breathable fabric or air vents, and an elongate support member that attaches to the upper and lower back wall portions without covering the central section, allowing for airflow and weight transfer from shoulders to hips, with adjustable shoulder straps and a waist connector for customizable fit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a frame is implemented to disperse load and transfer weight, then weight distribution is improved, but air ventilation is limited and temperature increases
Solution Approach 1:
The back wall is segmented into multiple portions (upper, lower, and central) with different functions. The upper and lower portions are attached to the support member for weight distribution, while the central portion remains unattached to allow airflow, resolving the contradiction between structural support and ventilation.
Solution Approach 2:
Different portions of the back wall have different attachment characteristics. The upper and lower portions are attached to provide structural support and weight distribution, while the central portion is deliberately left unattached to maintain breathability and reduce temperature, creating local quality variations to satisfy conflicting requirements.
2Object-affected harmful factors
If a frameless design is used to improve ventilation, then air flow is improved, but weight transfer effectiveness decreases
Solution Approach 1:
The back wall is segmented into attached and unattached portions. The upper and lower portions are attached to the support member to maintain weight transfer capability, while the central portion is unattached to preserve ventilation, achieving both goals simultaneously through segmentation.
Solution Approach 2:
The support member acts as an intermediary element that provides structural support for weight transfer without requiring full-coverage attachment to the back wall. This allows the central portion of the back wall to remain unattached for ventilation while still achieving effective weight distribution through the support member's load-bearing capability.
3Strength
If a rigid bird box is used for storage, then structural integrity is improved, but comfort and flexibility decrease
Solution Approach 1:
The support member is designed to be removable from the back wall, transforming the structure from static to dynamic. This allows the bird box to maintain structural integrity when the support member is in place, while enabling flexibility and comfort when the support member is removed or repositioned, addressing both structural and comfort requirements.
Solution Approach 2:
The support member is segmented from the back wall through removable attachment mechanisms. This segmentation allows the support member to be independently positioned or removed, providing structural support when needed while enabling flexibility and comfort adjustments, resolving the contradiction between rigidity and ease of operation.
Data Source
AI summary
A frameless backpack can include a shoulder strap and bag walls defining an at least partially enclosed volume. The back walls can include a back wall including: an upper wall portion connectable to the shoulder strap; a lower wall portion opposite the upper wall portion; and a central wall portion positioned between the upper wall portion and the lower wall portion, the central wall portion including at least one of a breathable fabric or an air vent. The frameless backpack can include: a waist connector coupled to one or more of the bag walls; and a support member including a first point of attachment at the upper wall portion and a second point of attachment at the lower wall portion, the support member being unattached to the back wall along the central wall portion between the first point of attachment and the second point of attachment.