Trailer Coupling Sensor for Secure Lock Detection
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Solution Overview
Problem
The existing trailer hitch systems lack a reliable mechanism to ensure secure locking of the towing coupling, leading to potential accidents and costly repairs when the trailer is not properly attached, especially during sudden movements or trips.
Innovation Solution
Incorporating a sensor arrangement with closing sensors and an evaluation device that detects the closed position of the locking part, transmitting signals to prevent engine motion or activate brakes if the coupling is not securely locked, ensuring the trailer is properly attached before movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a trailer hitch is used without a sensor arrangement to detect the closed position of the locking part, then the device complexity is reduced, but the operating safety and reliability deteriorate due to undetected improper locking
Solution Approach 1:
The patent implements a sensor arrangement that continuously monitors the position of the locking part and provides feedback signals to the control unit. When the locking part is not in the closed position, the system generates a warning signal to the driver and prevents the vehicle from being started, ensuring safe operation through real-time feedback monitoring
Solution Approach 2:
The patent introduces a control unit as an intermediary between the sensor arrangement and the vehicle's starting system. The control unit processes sensor signals and mediates the connection to the starter motor, enabling intelligent control of vehicle startup based on coupling status without requiring direct complex integration
2Reliability
If multiple closing sensors are arranged at a distance from one another on the coupling body, then the measurement reliability is improved through redundant measurements, but the device complexity increases
Solution Approach 1:
The patent places multiple closing sensors at different locations on the coupling body to monitor different aspects of the locking part's position. Each sensor has a specific detection zone, and their combined coverage ensures comprehensive monitoring of the coupling status, with each sensor performing a specialized local measurement function
Solution Approach 2:
The system performs preliminary detection of the locking part's position before allowing vehicle operation. The sensor arrangement continuously checks the coupling status in advance, and the control unit prevents vehicle startup if improper coupling is detected, addressing potential safety issues before they can cause harm
Data Source
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AI summary
The coupling (10) has a coupling body (15) comprising a counter bearing surface (28) for a closure element (21) of a traction coupler (16). The closure element is adjustable between closing and open positions and moved toward the counter bearing surface to lock the traction coupler at the coupling body in the closing position. The closure element is moved away from the counter bearing surface to release the traction coupler from the coupling body in the open position. A sensor arrangement (30) comprises a locking sensor (70) for recognizing a closing position of the closure element. The locking sensor is designed as a contactless optical, inductive and/or capacitive sensor. The coupling body is designed as a clutch ball. The traction coupler is designed as a traction ball joint.