Laterally Tiltable Multitrack Vehicle Self-Uprighting Mechanism
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Solution Overview
Problem
Existing laterally tiltable multitrack vehicles lack the ability to self-upright after tilting, which is essential for maintaining stability and reducing the risk of tipping over, especially in narrow designs where the centroid of the vehicle drops during lateral tilting.
Innovation Solution
The implementation of a dual-cylinder unit system for each wheel pair, where two cylinders with different diameters are connected in series to form a fluid-conducting circuit, allowing fluid transfer between them, enabling the vehicle body to raise its centroid during tilting and automatically self-upright by adjusting the wheel positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the vehicle body is designed to tilt laterally during cornering, then the vehicle can maintain stability through centrifugal force, but the centroid drops during tilting and the vehicle cannot self-upright
Solution Approach 1:
The system enables self-uprighting by using the tilt mechanism itself to automatically restore the vehicle to upright position after cornering, without requiring external intervention or additional active control systems
Solution Approach 2:
Instead of allowing the centroid to drop during tilting as in conventional designs, the patent inverts the approach by designing the suspension to raise the centroid during tilting, which provides the restoring moment needed for automatic self-uprighting
2Volume of moving object
If all wheels are designed to tilt with the vehicle body, then the vehicle achieves narrower overall design and requires less installation space, but the suspension system becomes more complex
Solution Approach 1:
The patent combines the wheel tilting function with the suspension system, so that the same suspension components that support the wheels also enable them to tilt with the vehicle body, eliminating the need for separate tilting mechanisms
Solution Approach 2:
The suspension system performs multiple functions simultaneously: it supports the vehicle weight, enables lateral tilting during cornering, and provides the self-uprighting mechanism, making the system highly efficient and space-saving
3Length of moving object
If the vehicle is designed with narrow track width to reduce size, then the vehicle can operate in tight urban spaces, but the vehicle becomes more prone to tipping over
Solution Approach 1:
The suspension system is pre-configured with the dual-cylinder arrangement and fluid connection geometry that automatically generates the necessary restoring force when tilting occurs, preventing tip-over before it can happen
Solution Approach 2:
The patent uses hydraulic fluid transfer between the first and second cylinders to control the suspension and tilting behavior, providing smooth and controlled stabilization forces that prevent sudden tip-overs
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
This solution allows for a compact design that automatically self-uprights the vehicle, maintaining stability and reducing installation space, while ensuring the vehicle remains upright even at a standstill, enhancing safety and maneuverability in tight spaces.
Implementation Method 1
The first and second cylinder units are fluidly connected to each other and fluid is transferable between the cylinder units via a first cylinder of one cylinder unit and a second cylinder of the other cylinder unit and vice versa
Data Source
AI summary
A laterally tiltable, multitrack vehicle is disclosed. The vehicle includes a vehicle body and three wheels. The first and second wheels are assigned to a common axle to form a first wheel pair. A first cylinder unit supports the first wheel of the wheel pair on the vehicle body and a second cylinder unit supports the second wheel of the wheel pair on the vehicle body. Each cylinder unit includes a first cylinder and a second cylinder connected in series. Each first cylinder has a first diameter and each second cylinder has a second diameter larger than the first diameter. The first and second cylinder units are fluidly connected to each other. Fluid is transferable between cylinder units between a first cylinder of the one cylinder unit and a second cylinder of the other cylinder unit.