Motor Vehicle Door Lock Segmented Control Contour
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Solution Overview
Problem
Existing motor vehicle door locks lack robust and reliable engagement of lock functions, particularly in ensuring secure operation under various conditions and precise control of locking mechanisms.
Innovation Solution
Decoupling the control contour from the locking element and using a separate locking lever with a control contour that interacts with a push rod, allowing defined switching paths and moments, enabling reliable and efficient locking and unlocking operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the control contour is integrated into the locking element, then the structure is simpler, but the engagement of lock functions becomes less reliable and precise
Solution Approach 1:
The locking mechanism is segmented into separate functional components: the locking element (with locking bolt) and the control element (with control contour) are decoupled. This segmentation allows independent optimization of each component's function, improving reliability by ensuring that the control contour can be precisely engineered for reliable engagement without compromising the structural simplicity of individual parts.
2Measurement precision
If a single drive is used for multiple lock functions, then the device is more compact and efficient, but the control precision for each function decreases
Solution Approach 1:
The control element acts as an intermediary between the single electric drive and the locking element. The control contour on the control element translates the drive's motion into precise control of the locking mechanism's state transitions. This intermediary mechanism enables a single drive to achieve precise control of multiple lock functions by sequentially engaging different control contours for different functions.
3Reliability
If the locking mechanism is designed for robust operation under extreme conditions, then the reliability improves, but the ease of operation decreases
Solution Approach 1:
The control element is designed to be movable relative to the locking element, with the control contour providing dynamic engagement surfaces. This dynamic design allows the mechanism to maintain robustness under extreme conditions while enabling easy operation through simple actuation of the control element, which can be moved to engage or disengage the locking function as needed.
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
Ensures reliable and secure engagement of lock functions, allowing for precise control and operation under extreme conditions, with the ability to perform multiple lock functions with a single drive, including central locking, electric opening, anti-theft, and child safety features.
Implementation Method 1
a spring, in particular a center-zero spring
Implementation Method 2
an electric drive
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a motor vehicle door lock, comprising a locking mechanism, an electric drive, a locking unit and a coupling lever (4, 10), said coupling lever acting on the locking unit. The coupling lever (4, 10) can be actuated by the electric drive (6) counter to the force of the spring (5). The locking unit has a control contour, the coupling lever (4, 10) cooperating with said control contour.