Wheeled Backpack Wheelbase and Handle Design for Rough Terrain
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Solution Overview
Problem
Existing wheeled luggage and backpacks are unstable, cumbersome, and difficult to maneuver on uneven terrain, lack stability and steering, and do not provide adequate functionality for various activities such as disc golf, hiking, and camping.
Innovation Solution
A wheeled backpack with a telescoping handle assembly, adjustable wheelbase, and additional features like a camera mount, solar panel, and lumbar support, designed for improved stability, maneuverability, and multifunctionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If small diameter wheels are used in wheeled luggage, then the luggage is easier to maneuver on smooth surfaces, but it becomes difficult to use on uneven surfaces and stairs
Solution Approach 1:
The patent implements independently suspended wheels that can dynamically adjust to terrain variations. Each wheel assembly includes a suspension mechanism with springs and dampers that allow the wheels to move independently relative to the luggage body, enabling the luggage to adapt to uneven surfaces while maintaining maneuverability on smooth surfaces
2Ease of operation
If a telescoping handle is added to wheeled luggage for ease of wheeling, then the luggage becomes easier to pull, but the handle becomes unstable and can collapse unexpectedly
Solution Approach 1:
The telescoping handle is divided into multiple segmented sections that can extend and retract. Each section is stabilized with individual locking mechanisms including cam locks and friction-based retainers, ensuring that each segment remains securely positioned during use and preventing unexpected collapse
Solution Approach 2:
The handle incorporates pre-positioned locking mechanisms that automatically engage when the handle is extended to a desired length. The locking system is designed to preemptively secure the handle position before use, preventing instability during operation
3Ease of operation
If wheeled carts are used to transport heavy backpacks on even terrain, then the backpacks are easier to roll, but the carts are bulky and heavy to carry on hilly or rocky terrain
Solution Approach 1:
The patent merges the backpack and wheeled cart into a single integrated unit. The wheels and handle are directly attached to the backpack structure, eliminating the need for a separate cart. This integration reduces overall weight and bulk while providing wheeled transport capability when needed
Solution Approach 2:
The integrated wheeled backpack incorporates collapsible wheel assemblies that can be deployed when wheeled transport is needed and retracted or removed when carrying on foot is more efficient, allowing dynamic adaptation to terrain conditions
4Adaptability or versatility
If known carts are designed to carry backpacks, then the backpacks can be rolled on smooth terrain, but the combinations are not designed to be carried on a back like a backpack
Solution Approach 1:
The backpack incorporates adjustable and removable components including shoulder straps, waist belts, and wheel assemblies. These elements can be dynamically configured or removed based on whether the user needs to wear the backpack or use it with wheels, simplifying the structure for each specific use case
Data Source
AI summary
A wheeled backpack includes a telescoping handle assembly, an axle coupled to the telescoping handle assembly, wheels having an inner side, the wheels being rotatably coupled to each end of the axle, and the axle and the telescoping handle assembly coupled to a lower portion of a backpack provided at least mostly between the inner sides of the wheels.