Selective Actuation Device for Vehicle Stability Control
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Solution Overview
Problem
Current vehicle systems lack a selective and reliable actuation device that can independently control and disconnect various operating groups such as rear wheel parking brakes, suspension stroke stop devices, and anti-roll systems, particularly during complex maneuvers like provisional stops, which can lead to instability and balance issues.
Innovation Solution
A selective actuation device equipped with an actuator, pusher element, rotating element, and elastic means, allowing for simultaneous activation or exclusion of operating groups, featuring a helicoidal spring mechanism to reduce inertia and a toothed element that engages/disengages the rear brake, anti-roll system, and suspension stop devices based on user input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a selective actuation device is designed to independently control multiple operating groups (brakes, suspension, anti-roll system), then the vehicle stability and control precision are improved, but the device complexity increases
Solution Approach 1:
The actuation device employs a universal actuator that can control multiple operating groups (rear wheel parking brake, suspension stroke stop device, anti-roll system) through a single integrated mechanism. The rotating element with toothed portions engages with different cable assemblies to activate different operating groups, allowing one actuator to perform multiple functions and thereby reducing overall device complexity while maintaining independent control capability
Solution Approach 2:
The patent merges the control of multiple operating groups into a single actuation mechanism. The actuator, rotating element, and elastic means are combined into one integrated assembly that can selectively engage different cable assemblies (first cable for parking brake, second cable for suspension, third cable for anti-roll system), consolidating what would otherwise require separate actuators into a single device
2Speed
If the actuation device uses elastic means to keep constantly charged, then the response speed and reliability are improved, but the manufacturing complexity increases
Solution Approach 1:
The elastic means (helicoidal spring) is pre-loaded to constantly charge the actuation mechanism, preparing it for immediate action. The spring is installed in a pre-loaded state that stores potential energy, enabling the actuator to respond instantly when activated without requiring external power or complex control systems, thereby improving response speed while maintaining manufacturing simplicity
Solution Approach 2:
The elastic means provides self-service by automatically maintaining the charged state of the actuation device without requiring external energy input or complex control systems. The helicoidal spring continuously exerts force to keep the mechanism ready for activation, eliminating the need for batteries, motors, or electronic control to maintain readiness, thus improving response speed while keeping manufacturing simple
3Adaptability or versatility
If the rotating element engages multiple cable assemblies for different operating groups, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The rotating element is designed with multiple toothed portions that can engage with different cable assemblies (first cable for parking brake, second cable for suspension, third cable for anti-roll system). This universal design allows a single rotating element to control multiple operating groups, providing adaptability and versatility without requiring separate actuators for each function
Solution Approach 2:
The rotating element is segmented into distinct toothed portions, each capable of engaging with a specific cable assembly. This segmentation allows independent control of different operating groups while using a single actuator, as each toothed portion can be engaged or disengaged selectively, providing versatility without proportionally increasing overall mechanism complexity
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
The device ensures vehicle stability by allowing precise control over operating groups, reducing initial inertia, and enabling safe and efficient operation across various conditions while being simple and cost-effective to produce.
Implementation Method 1
at least an elastic means interposed between the pusher element and the actuator in order to keep the actuation device constantly charged
Implementation Method 2
helicoidal spring mechanism to reduce inertia
Data Source
AI summary
Selective actuation device (1) including an actuator (5) operating on an actuation mechanism (2). The mechanism (2) is equipped with at least one shaft (7) connected to a pusher element (8) to actuate a first operating group (12, 13) and with a rotating element (53) that moves between an activation mode, in which said element (53) acts on a second operating group (9, 10), and a rest mode where the activation of the first operating group (12, 13) is disengaged by the second operating group (9, 10).