Vehicle Door Handle Emergency Opening Element
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Solution Overview
Problem
In emergency situations, such as accidents, modern vehicle door handles with automatic locking systems fail to open when electronics or power supply fail, posing a barrier to providing first aid due to jammed or inaccessible emergency opening elements, which are often difficult to find and can be damaged.
Innovation Solution
A door handle with a movable emergency opening element that automatically transitions to an operating position via a triggering device, allowing mechanical actuation of the locking system, even without power, ensuring easier access and operation, particularly designed for vehicles with keyless entry or keyless go systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the emergency opening element is integrated into the door handle assembly, then the structure is compact and integrated, but the element can jam or be damaged in accidents making it inaccessible
Solution Approach 1:
The emergency opening element is separated from the door handle assembly and designed as a detachable component that can be pulled out independently. This segmentation allows the element to be accessed and operated separately from the integrated door handle structure, preventing jamming and improving accessibility during emergencies.
Solution Approach 2:
The emergency opening element is designed to be movable between an integrated position and a pulled-out position. This dynamic design allows the element to transition from a compact integrated state to an accessible extended state, enabling easy operation while maintaining structural integration during normal conditions.
2Shape
If the emergency opening element is painted to match the vehicle color, then the aesthetic appearance is maintained, but the element becomes difficult to locate in emergency situations
Solution Approach 1:
The emergency opening element features a locally distinct color or visual marking at its exposed end, while the rest of the element may blend with the vehicle appearance. This local differentiation ensures the element is easily locatable during emergencies while maintaining overall aesthetic integration with the vehicle design.
Solution Approach 2:
The emergency opening element incorporates a color contrast feature, such as a brightly colored tip or marking, that makes it visually distinguishable from the surrounding door handle assembly. This color differentiation ensures high visibility and easy location during emergency situations while allowing the main body to match the vehicle aesthetic.
3Ease of operation
If a movable door handle is used, then manual opening is enabled, but the handle can jam preventing door opening in emergencies
Solution Approach 1:
The door opening function is segmented into two independent mechanisms: the movable door handle for normal operation and the emergency opening element for emergency situations. This segmentation ensures that failure or jamming of one mechanism does not prevent the other from functioning, thereby improving reliability during emergencies.
Solution Approach 2:
The emergency opening element acts as an intermediary mechanical linkage that directly connects to the locking system, bypassing the electronic control and movable handle mechanisms. This direct mechanical connection ensures reliable door opening in emergency situations even when the primary handle system fails or jams.
4Extent of automation
If electronic keyless entry systems are used, then automated unlocking is achieved, but the system fails when power supply or electronics fail
Solution Approach 1:
The unlocking system is segmented into electronic control for normal automated operation and a separate mechanical emergency opening element for power-free operation. This segmentation ensures that the mechanical component remains functional independently of the electronic system, providing reliable unlocking capability even when power or electronics fail.
Solution Approach 2:
The emergency opening element provides a purely mechanical alternative to the electronic keyless entry system. This mechanical substitution ensures that door unlocking functionality is maintained through mechanical means when the electronic system fails, thereby improving overall system reliability without sacrificing automated functionality during normal operation.
Data Source
Figure 1~2b
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AI summary
The invention relates to a door handle (10) for a vehicle door (100) of a motor vehicle, which door handle has a movable emergency opening element (11), which can be brought into a mechanical operative connection with a locking system (101) of the vehicle door (100), wherein the emergency opening element (11) has a traction means (12) for actuating the locking system (101), in particular for unlocking and/or for opening the vehicle door (100). The emergency opening element (11) is movable between at least two positions (I, II), namely a rest position (I), in which the emergency opening element (11) is fastened to the door handle (10), and an operating position (II), in which the emergency opening element (11) can be actuated by a user in order to actuate the locking system (101) by pulling on the traction means (12), and further comprising a triggering device (14) for the emergency opening element (11) in order to automatically transfer the emergency opening element (11) from the rest position (I) into the operating position (II), in particular in an emergency situation, wherein the emergency opening element (11) is arranged on an underside of the door handle (10).