Motor Vehicle Door Lock Blocking Mechanism
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Solution Overview
Problem
Current motor vehicle locking devices fail to reliably prevent unintentional door opening during accidents, particularly side impacts, due to inadequate blocking mechanisms that can be triggered by external loads.
Innovation Solution
A locking device with a displaceable blocking means that interacts with a contact surface having a predetermined breaking point, ensuring precise alignment and secure blocking of the release lever, preventing unintentional unlocking, and featuring a compact, cost-effective design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a blocking means is integrated into the locking device with direct support from the locking device itself, then alignment precision and blocking reliability are improved, but device complexity increases
Solution Approach 1:
The blocking means is integrated directly into the locking device structure, with the blocking means being supported by the locking device itself rather than being a separate externally-mounted component. This merging of functions improves alignment precision and blocking reliability while the patent manages the resulting complexity through careful structural design.
2Measurement precision
If a contact surface with predetermined breaking point is provided for the blocking means, then triggering force control and detection capability are improved, but manufacturing complexity increases
Solution Approach 1:
A contact surface with a predetermined breaking point is provided in the locking device housing to enable the blocking means to be triggered at a specific, pre-determined force level during impact. This preliminary preparation of the contact surface allows for precise detection of triggering events while the breaking point is designed to be straightforward to manufacture.
3Manufacturing precision
If the blocking means is displaceably guided in the locking device to interact with the release lever, then blocking precision is improved, but structural complexity increases
Solution Approach 1:
The blocking means is designed to be displaceably guided within the locking device, allowing it to move and interact with the release lever dynamically during operation and impact events. This dynamic arrangement improves blocking alignment precision while the guidance structure is designed to minimize overall structural complexity.
Data Source
Figure 1~2
Figure 3~5
AI summary
The invention relates to a closing device (1) for a motor vehicle, having a locking mechanism (7) consisting of a rotary latch (7) and at least one pawl, a trigger lever, wherein the locking mechanism (7) can be unlocked by the trigger lever, and means which are arranged on the closing device (1) for blocking (5) a movement of the trigger lever. The movement can be blocked by a load (F) acting on the motor vehicle from the outside and a movement of the means for blocking (5), and the means for blocking (5) can be guided in the closing device (1) in a movable manner.