Actuator Positioning Device for Heavy Duty Vehicle Remote Control
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Solution Overview
Problem
Existing remote control systems for heavy duty and agricultural vehicles, such as handlers, lack a simple and robust mechanism to securely position levers, which can lead to unsafe operation if control modes are engaged unintentionally, particularly due to the complexity and bulk of mechanical holding devices.
Innovation Solution
A positioning device with an elastic element that includes a fastening portion and a retaining portion, forming specific angles and curvatures, which opposes movement at a threshold position and requires a higher switching force than the displacement force, ensuring precise control and safety by guiding the actuator through a displacement trajectory.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical holding devices are used to secure lever positions, then positioning reliability is improved, but device complexity and bulk increase
Solution Approach 1:
The patent replaces complex mechanical holding devices with a sensor-based detection system that uses magnetic fields and electronic signal processing to detect lever position, thereby achieving reliable positioning without mechanical complexity
Solution Approach 2:
The patent introduces a magnetic field as an intermediary between the lever and the sensor, allowing non-contact detection of lever position and eliminating the need for direct mechanical interaction
2Reliability
If mechanical holding devices are used to secure lever positions, then positioning reliability is improved, but the structure becomes bulkier
Solution Approach 1:
The patent replaces bulky mechanical holding structures with compact electronic sensors and magnetic field detection systems, significantly reducing the volume required for positioning functionality
3Ease of operation
If the actuator can move freely along the displacement trajectory, then ease of operation is improved, but control precision deteriorates due to unintended mode switches
Solution Approach 1:
The patent employs a sensor that continuously detects the actuator position and provides feedback signals to the control system, enabling real-time monitoring and prevention of unintended mode switches while maintaining smooth operation
Solution Approach 2:
The patent replaces mechanical position limiting mechanisms with electronic position detection and control, allowing free movement within safe limits while maintaining precision through sensor feedback
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 solution enhances operator control and safety by requiring a conscious effort to change lever positions, providing a simple and robust structure that allows precise adjustment and distribution of forces, thus preventing unintended control mode switches.
Implementation Method 1
positioning device comprises an elastic element comprising a fastening portion intended to be secured to the body of the remote control and a retaining portion arranged to cooperate with the actuator at a threshold position
Data Source
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AI summary
The present invention relates to a positioning device (7) for a hydraulic and/or electronic remote control of a heavy duty vehicle or agricultural vehicle, which comprises an elastic element comprising a fastening portion intended to be secured to the body of the remote control and a retaining portion arranged to cooperate with the actuator at a threshold position delimiting a first portion of the displacement trajectory of the actuator, and a second portion of the displacement trajectory, in such a manner as to oppose the movement of the actuator according to its displacement trajectory along at least one displacement direction upon switching of said threshold position and allow the switching at the threshold position in said displacement direction as a result of the application of a threshold switching force exerted on the actuator, the threshold switching force being higher than the displacement force necessary for the movement of the actuator on the first portion of the displacement trajectory or the second portion of the displacement trajectory.