Modular Motorized Cart With Interchangeable Load Modules
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Solution Overview
Problem
Current hand-propelled and motorized carts are limited by the strength and stamina of a single operator, often require inefficient directional changes, and have fixed load-carrying designs that cannot be customized for varying sizes or materials.
Innovation Solution
A modular motorized cart with a fastener system for interchangeable articles, adjustable handles, foldable kickstands, and interchangeable wheels, powered by a detachable battery with optional solar charging, allowing for customizable configurations and improved terrain adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If hand-propelled carts are used, then simplicity and ease of manufacture are improved, but speed and distance are limited by operator strength and stamina
Solution Approach 1:
The patent replaces the manual mechanical propulsion system with an electric motor system. The cart includes an electric motor coupled to a drive wheel, eliminating the need for human physical effort to propel the cart. This substitution directly resolves the contradiction by maintaining mechanical simplicity while dramatically improving speed and distance capabilities through electric power assistance.
2Stability of the object's composition
If carts are designed with fixed frame-to-load connections, then structural stability is improved, but adaptability to different load sizes and materials deteriorates
Solution Approach 1:
The patent divides the cart into separable modules: a frame and interchangeable load-carrying components (trays, baskets, containers). These components can be detached and replaced independently, allowing the cart to adapt to different load sizes and materials while maintaining structural stability through the robust frame design. This segmentation enables both stability and customizability.
Solution Approach 2:
The cart frame is designed as a universal platform that can accommodate multiple types of load-carrying components. The standardized attachment mechanisms allow different trays, baskets, or containers to be mounted on the same frame, making the cart versatile for various applications while maintaining consistent structural integrity through the unified frame design.
3Ease of manufacture
If carts have fixed directional design with front and back portions, then manufacturing simplicity is improved, but maneuverability and ease of operation deteriorate
Solution Approach 1:
The patent employs asymmetric wheel placement with different wheel configurations at the front and back of the cart. The front wheel assembly includes a steerable wheel for directional control, while the rear wheels provide stability and propulsion. This asymmetric design enables easy maneuverability and directional changes while maintaining relatively simple manufacturing through standardized wheel and axle components.
Data Source
AI summary
Embodiments of the present disclosure are directed to a cart frame and modular, motorized cart. In some examples, the cart frame may comprise a wheel assembly, handles, and a kickstand. A modular article (e.g., litter, stretcher, game basket, etc.) may be attached to the top portion of the cart frame via at least one fastener (e.g., buttons, snaps, hooks, buckles, quick-detach mounts, etc.). The handles may be foldable and extendable. The kickstands may also be foldable and extendable. The handles, in some embodiments, may serve a dual purpose by folding to a certain length to function as a kickstand. In other examples, the cart may comprise an engine that may be gas-powered or electric. A battery may be affixed to the cart frame that powers the electric engine. Other objects may also be attached to the cart frame or modular article, such as a winch, tow bar, light, bumper, etc.


