Laterally Tiltable Multitrack Vehicle Gearwheel 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 compact design, especially in narrow urban environments where space is limited.
Innovation Solution
The implementation of a gearwheel mechanism with a negative transmission ratio between drive and output shafts in wheel control parts allows for automatic self-uprighting by raising the vehicle's centroid during lateral tilting, enabling the vehicle to assume a stable upright position with minimal installation space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the vehicle body tilts laterally during curving, then the vehicle can navigate curves more efficiently and maintain stability, but the centroid drops and the vehicle cannot self-upright automatically
Solution Approach 1:
The patent changes the geometric parameters of the suspension system by introducing offset distances (e1, e2) between the wheel control part rotation centers and the common axle. This parameter modification enables the centroid to rise during tilting through the gearwheel mechanism's negative transmission ratio, allowing automatic self-uprighting while maintaining curving stability
Solution Approach 2:
The gearwheel mechanism acts as an intermediary between the wheel control parts and the vehicle body. It transmits and transforms the motion from the tilting wheels to the vehicle body, converting the lateral tilting motion into a controlled movement that raises the centroid and enables self-uprighting
2Area of moving object
If all wheels tilt together with the vehicle body, then less installation space is required and the vehicle design is narrower, but the mechanism complexity increases
Solution Approach 1:
The patent merges the tilting functions of all wheels by coupling the wheel control parts through gearwheel mechanisms. This integration allows all wheels to tilt synchronously with the vehicle body, reducing the required installation space and achieving a narrower vehicle design while managing the complexity through standardized coupling mechanisms
3Length of moving object
If the vehicle is designed to be narrow for urban areas, then parking and traffic flow improve, but the vehicle width constraint makes it difficult to accommodate tilting mechanisms
Solution Approach 1:
The patent moves the tilting mechanism from a lateral (width) dimension to a longitudinal and vertical dimension. The wheel control parts rotate about centers offset from the common axle, and the gearwheel mechanisms are arranged to utilize space along the vehicle's length and height, thereby accommodating the tilting function without significantly increasing the vehicle width
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 ensures automatic self-uprighting of the vehicle, maintaining stability and compactness, even when tilting, by effectively raising the centroid to its lowest position during neutral upright conditions, thus addressing the challenge of space constraints in urban areas.
Implementation Method 1
The first and second gearwheel mechanisms each have a negative transmission ratio between a drive shaft and an output shaft
Implementation Method 2
a first wheel control part suspends the first wheel of the wheel pair from the vehicle body and a second wheel control part suspends the second wheel of the wheel pair from the vehicle body
Data Source
AI summary
A laterally tiltable, multitrack vehicle is disclosed. The vehicle includes a vehicle body and at least three wheels, with two of the wheels being assigned to a common axle to form a first wheel pair. A first wheel control part suspends the first wheel of the wheel pair from the vehicle body and a second wheel control part suspends the second wheel of the wheel pair from the vehicle body. The first wheel control part is configured to be coupled to the second wheel control part via a first gearwheel mechanism, and the second wheel control part is configured to be coupled to the first wheel control part via a second gearwheel mechanism. The first and second gearwheel mechanisms each have a negative transmission ratio between a drive shaft and an output shaft. The laterally tiltable, multitrack vehicle may be a motor vehicle.