Segmented Vehicle Stabilizer for Roll Control and Impact Isolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle stabilizers face challenges in reducing rolling and pitching caused by centrifugal or inertial forces while minimizing the impact of obstacles on the car body, and they often suffer from noise, lubrication, and slippage issues.
Innovation Solution
The stabilizer bar's torsion is adjusted by varying its rigidity and geometry, using 4-section or 3-section links and a spline shaft control device to distribute torque differently between the wheels during cornering, acceleration, and deceleration, and employing a helical torsion spring or torsion coil spring for fixation to enhance riding comfort and reduce noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the torsional rigidity of the stabilizer bar is increased to reduce rolling and pitching, then the car body stability is improved, but the impact from obstacles is more likely to be transmitted to the car body
Solution Approach 1:
The stabilizer bar is divided into multiple sections with different rigidity characteristics. The first stabilizer bar portion has higher torsional rigidity for reducing body roll, while the second stabilizer bar portion has lower rigidity to absorb impact energy, preventing full impact transmission to the car body.
Solution Approach 2:
Different portions of the stabilizer bar are designed with different local properties - the first portion near the car body has high rigidity for stability, while the second portion toward the wheel has lower rigidity for impact absorption, creating a gradient of mechanical properties along the bar length.
2Stability of the object's composition
If the torsional rigidity of the stabilizer bar is increased to reduce rolling, then the springs are compressed to the same length, but the independence of the suspension system of each wheel is undermined
Solution Approach 1:
The stabilizer bar is segmented into two portions with different rigidity levels, allowing each wheel to maintain independent suspension capability while still providing coordinated rolling resistance through the connected first portion that links both wheels.
3Stability of the object's composition
If a traditional stabilizer bar is used to improve resistance to roll and pitch, then the torsional elasticity is utilized, but noise and lubrication issues occur in the fixing device
Solution Approach 1:
The traditional mechanical fixing device with bushings and lubrication points is replaced with a helical spring-based fixing mechanism. The helical spring provides both the fixing function and the necessary elasticity, eliminating the need for separate bushings and lubrication systems that generate noise and require maintenance.
4Ease of manufacture
If the stabilizer bar structure is simplified to reduce complexity, then manufacturing is easier, but the ability to distribute torque differently during cornering and acceleration is reduced
Solution Approach 1:
The stabilizer bar is divided into two portions that can be manufactured separately using standard processes, then connected through a coupling mechanism. This segmentation allows each portion to be optimized for its specific function while maintaining overall adaptability for different driving conditions through the flexible connection.
Solution Approach 2:
The coupling between the two stabilizer bar portions incorporates dynamic elements such as helical springs that allow the relative position and torque transmission to vary based on driving conditions - during cornering, acceleration, or deceleration, the coupling adapts its mechanical characteristics to optimize torque distribution automatically.
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 approach effectively reduces rolling and pitching by optimizing torque distribution and wheel spring lengths, improving riding comfort, and eliminating noise and lubrication issues during vehicle maneuvers.
Implementation Method 1
employing a helical torsion spring or torsion coil spring for fixation to enhance riding comfort and reduce noise
Implementation Method 2
The stabilizer of the car is a device that improves the resistance to the roll or pitch of the car by using the torsional elasticity of a torsion bar
Data Source
AI summary
There is provided a stabilizer for a vehicle, including a torsion bar fixed to a car body and configured to be rotated about a longitudinal axis of rotation without changing a position, two arm links connected to both ends of the torsion bar, and two drive links connected to each of the two arm links through a ball joint so as to be able to be rotated three-dimensionally, in which the two drive links are configured to, during cornering of the vehicle, adjust a degree of torsion of the torsion bar by rotating about an axis of rotation of a strut assembly or a steering knuckle connected to the two drive links.