Collapsible Backpack Frame Resisting Racking
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Solution Overview
Problem
Existing backpack systems designed for bicycles are complex, bulky, and ill-suited for human wear due to structural requirements that exceed the needs of a backpack, as they are intended to withstand bicycle impacts and loads, making them unsuitable for carrying pannier bags as a wearable backpack.
Innovation Solution
A collapsible and deployable backpack frame system that can be narrower than a bicycle's pedal width, using resilient upright and lateral frame members, such as aluminum or fiberglass rods, to provide structural support while resisting racking motions, allowing pannier bags to be easily attached and carried as a backpack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a pannier rack is designed to withstand bicycle impacts and loads, then the strength and rigidity are sufficient for bicycle luggage mount, but the structure becomes too heavy and bulky for human wear as a backpack
Solution Approach 1:
The frame is designed to be collapsible and deployable, transitioning from a rigid bicycle-mounted structure to a compact portable backpack configuration. The frame members can be folded or collapsed to reduce size and weight for carrying, while expanding to provide full structural support when mounted on a bicycle
Solution Approach 2:
The frame is divided into separate modular components that can be independently assembled or disassembled. This segmentation allows the frame to be broken down into smaller, lighter segments for easier transport and storage, while maintaining full strength when assembled on the bicycle
2Stability of the object's composition
If a pannier rack is designed to be rigid for bicycle mounting, then it can withstand impacts and loads, but it becomes difficult to collapse and store when not in use
Solution Approach 1:
The frame incorporates movable joints and flexible connection points that allow it to transition between rigid and collapsed states. When mounted on the bicycle, the frame maintains stable rigid geometry to support loads, but can be easily collapsed by actuating the movable joints for storage or transport
3Weight of moving object
If the backpack frame is made lighter for human wear, then it becomes more comfortable to carry, but it loses the strength and rigidity needed to withstand bicycle impacts and loads
Solution Approach 1:
The frame's weight and structural properties are dynamically adjusted based on usage context. When mounted on a bicycle, the full-strength configuration supports heavy loads and impacts. When collapsed for backpack use, the frame is lighter and more manageable, yet still provides adequate support for typical backpack loads
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
The system allows for convenient carrying of pannier bags as a backpack without removing the pannier rack from the bicycle, offering improved racking resistance and a more comfortable, lightweight solution that is easier to transport and wear.
Implementation Method 1
resilient upright and lateral frame members, such as aluminum or fiberglass rods, to provide structural support while resisting racking motions
Data Source
AI summary
A frame for a collapsible and deployable backpack can include a plurality of struts and straps configured for carrying luggage. The struts can be attachable to form a backpack frame. The straps can be attachable to the struts for wearability. The luggage can be in the form of two or more independent pieces of luggage attachable to the frame, for example, two or more pannier bags. The frame can include upright struts bent into a bowed configuration. The bowed struts can be oriented in a splayed apart configuration to provide racking resistance. In a collapsed configuration, the backpack can have an overall width that is less than a pedal width of a bicycle, and optionally less than a width of a suspension portion of a bicycle.