Cargo Vehicle Chassis Layout for Low-Center Stability
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Solution Overview
Problem
Existing cargo-carrying vehicles, such as freight bicycles and cargo scooters, face issues with maneuverability and stability due to improperly aligned cargo areas, which raise the center of gravity, making them difficult to handle and maneuver, especially when loaded, and often restrict rider ergonomics.
Innovation Solution
A cargo-carrying wheeled vehicle design that includes a cargo hold chassis, a battery support chassis, and a rider and pillion support chassis, strategically positioned to maintain a lower combined center of gravity near the wheelbase, with defined distances between these components to ensure stability and ease of handling, even when loaded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If cargo area is randomly placed or mounted over wheels, then cargo carrying capacity is achieved, but vehicle maneuverability deteriorates due to dangerous moments acting on the vehicle during turns
Solution Approach 1:
The patent positions the cargo area in the longitudinal dimension (ahead of the rider) rather than lateral or vertical positions, which creates a balanced moment distribution that improves maneuverability while maintaining cargo capacity
Solution Approach 2:
The cargo area is specifically positioned in a localized region ahead of the rider at a defined distance, creating an optimized weight distribution zone that balances cargo capacity with handling characteristics
2Quantity of substance
If load is carried at higher location, then cargo carrying capacity is achieved, but vehicle stability deteriorates by raising the centre of gravity to a dangerous height
Solution Approach 1:
The cargo is positioned in the longitudinal dimension (ahead of rider) rather than elevating it vertically, which maintains cargo capacity while keeping the center of gravity low for vehicle stability
3Quantity of substance
If load is kept behind the rider, then cargo carrying capacity is achieved, but rider ergonomics deteriorate by restricting backward movement and causing strain on the rider's back
Solution Approach 1:
Instead of placing cargo behind the rider (conventional position), the patent inverts the arrangement by positioning cargo ahead of the rider, which eliminates backward movement restrictions and back strain while maintaining cargo capacity
4Quantity of substance
If load is placed at operative forward location, then cargo carrying capacity is achieved, but vehicle maneuverability deteriorates by moving the centre of gravity way too ahead
Solution Approach 1:
The patent optimizes the longitudinal distance parameter between the rider and cargo area, defining a specific distance range that balances cargo capacity with maneuverability by preventing excessive forward center of gravity shift
Data Source
AI summary
A cargo-carrying wheeled vehicle comprising: at least a cargo hold chassis (10); at least a battery support chassis (30) configured to be operatively behind or operatively ahead or operatively underneath said cargo hold chassis (10); and at least a rider and pillion support chassis (20) configured to be operatively behind said battery support chassis (30) and operatively behind said cargo hold chassis (10), in that, said cargo hold chassis (10), said battery support chassis (30), and said rider and pillion support chassis (20) cooperate to maintain centre of gravity of said vehicle, after addition of cargo and rider and pillion, relatively lower (closer to ground) and substantially on or very near to the centerline of the wheelbase of this vehicle (between 10a and 12a).