Motor Vehicle Door Lock Emergency Release Reset Mechanism
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Solution Overview
Problem
Existing motor vehicle locks require special tools for manual emergency opening and resetting, making the process complex and inconvenient, especially when the electrical opening drive fails.
Innovation Solution
The emergency actuating element is designed to be reset manually without tools, using a spring or a handle, allowing it to return to its rest position, and is concealed behind a detachable trim to prevent unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the emergency actuating element requires special tools for actuation and resetting, then the locking mechanism can be securely protected from unauthorized opening, but the ease of operation deteriorates due to the need for additional tools and complex resetting procedures
Solution Approach 1:
A toolless actuating element with a specific geometric design serves as an intermediary between the user and the locking mechanism. The actuating element features a recessed actuating surface that can be engaged by a standard coin or similar circular object, eliminating the need for specialized tools while maintaining security through its integrated design within the trim piece.
Solution Approach 2:
The emergency actuating element is designed to be manually operable by the end user without requiring external tools or assistance. The resetting mechanism automatically returns the actuating element to its initial position after emergency actuation, enabling the user to perform both opening and resetting operations independently.
2Ease of operation
If the emergency actuating element is made accessible from the outside, then the ease of operation improves for emergency opening, but security deteriorates due to risk of unauthorized manipulation
Solution Approach 1:
The emergency actuating element is nested within the interior trim piece, which itself is integrated into the door structure. The actuating element is positioned such that it can be accessed from the vehicle exterior through the trim opening, while its design features (recessed actuating surface, specific geometry) prevent unauthorized actuation by ordinary objects, thus providing both accessibility and security.
3Reliability
If a detachable trim is used to conceal the emergency actuating element, then security against unauthorized manipulation improves, but the ease of operation worsens due to the need to remove or access the trim
Solution Approach 1:
The trim piece is designed as a detachable or removable component that can be separated from the door structure. The emergency actuating element is integrated into the trim piece, allowing the trim to serve as a protective cover when attached and as an access mechanism when removed. This segmentation enables the trim to provide both security during normal operation and accessibility during emergencies.
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
Facilitates simple and tool-free manual emergency opening and resetting of the locking mechanism, ensuring ease of use and security against unauthorized manipulation.
Implementation Method 1
the emergency actuating element is designed such that it can be reset from its actuating position into its rest position by the force of a spring
Data Source
AI summary
A motor vehicle lock, in particular a motor vehicle door lock, which is equipped with a locking mechanism substantially comprising a rotary latch and a pawl. In addition, an electrical opening drive is provided for the locking mechanism as well as an emergency actuating element for manual emergency opening of the locking mechanism. According to the invention, the emergency actuating element is designed in a first variant such that it can be reset from its actuating position to its rest position via the force of a spring. In a further second alternative variant, the emergency actuating element is designed such that it is locked in its actuating position and can be manually reset to its rest position.