Sensor-Equipped Liftgate Hooks That Prevent Automatic Closure
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Solution Overview
Problem
Vehicle liftgate assemblies lack components like hooks to hang items, and when power-operated, hanging items can interfere with automatic closing, posing a safety and operational issue.
Innovation Solution
Incorporating a hook on the interior surface panel of the liftgate assembly with sensors to detect items and a controller that alerts users and prevents closure when an item is suspended, ensuring safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If hooks are added to the liftgate interior surface panel to hang items, then the convenience and functionality of the vehicle is improved, but the risk of interference with automatic closing operation increases
Solution Approach 1:
The sensor detects the presence of items on hooks before the automatic closing operation is initiated. The controller receives the detection signal and prevents closure in advance, avoiding the interference problem entirely rather than reacting after interference occurs.
Solution Approach 2:
The sensor provides continuous feedback about item presence on the hooks to the controller. This feedback mechanism allows the system to monitor the hanging status and make real-time decisions about whether to allow automatic closing, ensuring both convenience and safety.
2Reliability
If sensors and controllers are integrated into the liftgate assembly to detect items on hooks, then the safety and reliability of automatic closing operation is improved, but the device complexity increases
Solution Approach 1:
The controller serves multiple functions: it manages the automatic closing operation, receives sensor signals about item presence, decides whether to permit closure, and activates alert indicators. This multi-functionality reduces the need for separate dedicated components for each function, thereby limiting the increase in overall system complexity.
Solution Approach 2:
The sensor acts as an intermediary element that bridges the physical state (item presence on hooks) and the control system. By placing the sensor in strategic locations near the hooks, it efficiently detects item presence without requiring complex sensor arrays or sophisticated detection mechanisms throughout the entire liftgate assembly.
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
Enables safe and convenient use of liftgate hooks without interfering with automatic closure, enhancing user experience and safety by preventing accidental door closure.
Implementation Method 1
one or more sensors disposed on the door assembly and configured to sense a presence of an item hanging on the at least one hook
Data Source
AI summary
Liftgate assemblies with accessory hooks are disclosed. A liftgate assembly includes a door assembly movable in a vehicle vertical direction to an open position. The door assembly includes an interior surface panel, at least one hook disposed on the interior surface panel, and a controller communicatively coupled to the door assembly. The controller is configured to determine a presence of an item suspended from the hook when the door assembly is in the open position, transmit an alert, and prevent the door assembly from closing.