Removable Backpack Frame with Ventilation and Load Distribution
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Solution Overview
Problem
Existing backpack frame arrangements do not efficiently allow for the removal and replacement of frames for washing or damage replacement, and they lack effective ventilation and load distribution systems.
Innovation Solution
A backpack design featuring a removable frame with a concave tensioning mechanism using vertical and transverse frame parts, a net part, and a hook-and-loop fastener system for easy attachment and detachment, along with a zipper closure for ventilation and load distribution to the pelvic region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the frame arrangement is made removable for washing or replacement, then ease of maintenance is improved, but device complexity increases due to additional fastening mechanisms
Solution Approach 1:
The frame arrangement is divided into separable components that can be removed from the backpack. The frame is constructed with distinct parts that can be detached through opening (6) and reattached through the same opening, enabling easy maintenance while keeping the overall structure manageable.
Solution Approach 2:
The frame arrangement can be completely extracted from the backpack through the opening (6) in the back wall (8). This extraction capability allows the frame to be removed for washing or replacement without affecting the main backpack structure, directly addressing the ease of maintenance requirement.
2Object-affected harmful factors
If the net part is used to tension the back wall, then ventilation is improved, but structural strength decreases
Solution Approach 1:
The back wall (8) is constructed with different properties in different regions: the upper portion has a convex shape for structural strength, while the lower portion has a concave shape that works with the frame arrangement to create ventilation space. The net part (17) is strategically positioned to provide ventilation where needed without compromising overall structural integrity.
Solution Approach 2:
The back wall features curved surfaces - a convex upper portion and a concave lower portion - that work together with the frame arrangement to create ventilation space. These curved geometries allow the net part to tension effectively while maintaining structural strength through the distributed curvature.
3Ease of operation
If the frame arrangement is designed to be open at the bottom, then ease of frame insertion is improved, but stability of frame positioning worsens
Solution Approach 1:
The lower pockets (15, 16) are pre-positioned in the back wall to receive the lower ends of the vertical frame parts. This preliminary positioning guides the frame insertion process and ensures proper alignment, making insertion easy while maintaining stable positioning once the frame is in place.
Solution Approach 2:
The lower pockets (15, 16) act as intermediary elements between the frame and the back wall. These pockets provide a stable receiving structure for the lower frame ends, mediating the connection between the open frame design and the closed back wall, thus ensuring both ease of insertion and stable positioning.
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
Enables easy frame removal and replacement, improved ventilation through a sinew-like net material, and effective load distribution to the pelvic region, enhancing comfort and durability.
Implementation Method 1
the vertical frame parts each extend from the frame region to a predetermined place in the direction of the back wall in an arch-shaped manner in order to concavely tension the back wall
Implementation Method 2
the retaining tab is attachable to the reinforcement member by a hook-and-loop fastener
Implementation Method 3
A net part is tensioned in a sinew-like manner in front of the frame
Data Source
AI summary
A backpack includes a bag having an interior packing space and a back wall that has a top and a bottom. The back wall includes an opening proximate the top of the back wall. A back contacting surface is attached to the top of the back wall and the bottom of the back wall. A frame is removably mounted to the back wall between the back wall and the back contacting surface. The frame includes a bend configured to space the back wall from the back contacting surface. The frame is insertable and removable to and from the back wall through the opening.