Vehicle Door Handle Emergency Extension Under Power Loss
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Solution Overview
Problem
Electronic door handles in vehicles may fail to extend during emergencies like accidents, preventing quick door opening and hindering prompt evacuation and rescue.
Innovation Solution
A door handle emergency extension system with energy-amplifying actuators, a controller, and an emergency power supply to forcibly release the door lock mechanism and extend the door handle using pyro devices, even when the vehicle power is cut off.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electronic door handles are retracted inside the door during driving or power-off situations for security and aesthetic design, then security and aesthetics are improved, but in emergency situations the door handle may fail to extend, preventing quick door opening
Solution Approach 1:
The system performs preliminary actions by detecting collision or power loss events and proactively extending the door handle before the emergency situation fully develops. The controller monitors vehicle status and automatically triggers handle extension when abnormal conditions are detected, ensuring the handle is ready for immediate door opening without requiring user intervention during the emergency.
Solution Approach 2:
The patent replaces traditional mechanical door handle extension mechanisms with an electronic control system that uses actuators to extend the handle. This substitution allows for more reliable extension behavior in emergencies through electronic detection and control, while maintaining the retracted state during normal operation for security and aesthetics.
2Productivity
If the door lock mechanism remains engaged during emergencies to maintain security, then security is preserved, but the door cannot be opened quickly for evacuation and rescue
Solution Approach 1:
The system performs preliminary action by automatically releasing the door lock mechanism when collision or emergency conditions are detected. The controller monitors vehicle status and proactively disengages the lock before evacuation is needed, ensuring the door can be opened immediately without requiring manual unlocking during the emergency situation.
Solution Approach 2:
The door lock mechanism transitions from a static locked state during normal operation to a dynamically controllable state during emergencies. The system uses sensors to detect emergency conditions and automatically changes the lock state, allowing the door to transition from secured to openable state based on real-time vehicle status.
3Reliability
If the vehicle power supply is cut off during accidents, then power loss is contained, but the door handle cannot extend and the lock cannot be released
Solution Approach 1:
The system performs preliminary action by detecting power loss events and immediately activating the door handle extension and lock release mechanisms using remaining power or alternative power sources. The controller monitors power supply status and proactively triggers emergency door opening functions before complete power depletion occurs, ensuring door operability even when main power is cut off.
Solution Approach 2:
The system changes the power supply parameter by switching from normal vehicle power to alternative power sources (such as backup batteries or capacitors) when power loss is detected. This parameter change enables the door handle and lock mechanisms to continue operating during power outages, maintaining emergency functionality despite main power disruption.
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 quick and easy door opening in emergencies, facilitating prompt evacuation and rescue by ensuring the door handle extends and the lock mechanism releases, regardless of power availability.
Implementation Method 1
The second pyro device may include a latch mechanism configured to maintain, in response to the door handle being extended from the door, the door handle in an extended state.
Implementation Method 2
The first energy-amplifying actuator may include a first pyro device installed to generate explosive power based on an electrical signal provided by the controller to release the door locking mechanism.
Implementation Method 3
The stop confirmation sensor may include at least one of an acceleration sensor and a gyro sensor that measure the presence or absence of movement of the vehicle.
Data Source
AI summary
The present invention is configured to include a first energy-amplifying actuator configured to release a door locking mechanism by outputting energy greater than the energy received, a second energy-amplifying actuator configured to extend a door handle from a door by outputting energy greater than the energy received, a controller equipped to drive the first energy-amplifying actuator and the second energy-amplifying actuator when the vehicle stopped moving is in a state where the door handle is not extended normally to facilitate opening the door, and an emergency power supply equipped to supply power to the controller independently of the vehicle power supply device.