Expandable Backpack Shells With Cord Closure for Bulky Loads
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Solution Overview
Problem
Conventional carriers such as backpacks, sports equipment bags, and luggage are not well-suited for carrying bulky or odd-sized objects due to their fixed configurations.
Innovation Solution
Modifications to the backpack, such as adding eyelets or strap strips along the zipper track, allow cords to be woven across the opening, which can be tensioned to secure the contents and accommodate larger or irregularly shaped items.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a backpack has a fixed configuration, then it maintains structural simplicity and ease of manufacture, but it cannot accommodate bulky or odd-sized objects
Solution Approach 1:
The patent applies the dynamics principle by making the backpack shell separable and reconfigurable. The shell can be divided into first and second shells that can be separated and repositioned, allowing the backpack to dynamically adapt its configuration to accommodate various sizes and shapes of objects, transforming a static structure into a dynamic one.
Solution Approach 2:
The patent applies segmentation by dividing the backpack shell into multiple separable parts (first shell and second shell). This segmentation allows the components to be independently positioned and reconfigured, enabling the backpack to adapt to different object sizes and shapes while maintaining structural integrity through connection elements like cords or zippers.
2Ease of operation
If cords are woven across the opening to secure contents, then the closure becomes adjustable and secure, but the manufacturing process becomes more complex
Solution Approach 1:
The patent applies the intermediary principle by introducing cords or zippers as mediating elements between the first and second shells. These intermediaries provide the adjustable closure mechanism, allowing users to secure contents with varying degrees of tension while keeping the manufacturing process relatively simple by using standard fastening components.
Solution Approach 2:
The cord-based closure system applies dynamics by providing an adjustable and flexible fastening mechanism. The cords can be tensioned to different degrees to accommodate various content volumes and shapes, making the closure adaptable to different operational needs without requiring complex rigid structures.
Data Source
AI summary
A backpack or carrier has a first and second shells each having a set of spaced apart openings. A first cord is threaded through the openings. The openings may or may not be laterally aligned with each other, and they may be formed by holes punched through the fabric of the carrier and reinforced by grommets. An additional second cord may be threaded through the openings on a second side. The second shell can be separable from the first shell by loosening the first cord and/or second cords. The first shell can be permanently joined to the second shell at a bottom of the carrier. Since the carrier can be expanded, it is well adapted for holding bulky items.