Deformable Bonnet Lock Case for Crash Force Reinforcement
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Solution Overview
Problem
Existing motor vehicle locking devices are structurally complex and require additional reinforcing elements to manage high forces during crashes, increasing production costs and complexity.
Innovation Solution
A deformable lock case is integrated with the locking mechanism to increase the moment of resistance by deforming and reinforcing the locking mechanism during crashes, without additional design measures like reinforcing plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If additional reinforcing plates and connecting elements are added to the locking mechanism, then the force absorption capacity is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines the lock case and locking mechanism into a single integrated structure where the lock case serves dual purposes: as a mounting structure and as a force-absorbing element. The lock case is designed with specific geometric features (flanges, recesses, curved surfaces) that enable it to directly engage and reinforce the locking mechanism during impact, eliminating the need for separate reinforcing plates and connecting elements.
Solution Approach 2:
The lock case is designed to perform multiple functions: it provides structural mounting for the locking mechanism, absorbs and distributes impact forces, and actively reinforces the locking mechanism during crash scenarios. This multi-functionality replaces the need for dedicated reinforcing components, reducing overall device complexity while maintaining strength.
2Reliability
If additional reinforcing elements are added to the locking mechanism, then the reliability during crashes is improved, but the ease of manufacture deteriorates
Solution Approach 1:
By merging the lock case and locking mechanism into an integrated structure, the patent eliminates multiple separate components that would require additional manufacturing steps. The lock case is formed as a single piece with integrated reinforcing features, simplifying production while ensuring reliable crash performance.
3Stability of the object's composition
If the lock case is made rigid to prevent deformation, then the structural stability is improved, but the ability to increase moment of resistance during crashes deteriorates
Solution Approach 1:
The lock case is designed with controlled deformability, allowing it to dynamically adapt its structural properties during impact. The geometric features enable the lock case to deform in a controlled manner, increasing engagement with the locking mechanism and thereby increasing the moment of resistance when needed, while maintaining sufficient stability during normal operation.
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
The combination of the deformable lock case and locking mechanism absorbs significantly higher forces, increasing the force absorption capacity by at least 50% without additional components, ensuring the locking mechanism remains closed during crashes.
Implementation Method 1
the lock case (7) is designed to be deformable in response to attacking and acceleration-induced forces, for example in the event of a crash
Implementation Method 2
the combination of the deformable lock case and locking mechanism absorbs significantly higher forces, increasing the force absorption capacity by at least 50%
Data Source
AI summary
The invention relates to a motor vehicle locking device, in particular a motor vehicle lock and preferably a motor vehicle bonnet lock. The motor vehicle locking device is equipped with a locking mechanism (2, 3) which consists substantially of a rotary latch (2) and a pawl (3). Furthermore, a lock case (7) is provided for mounting the locking mechanism (2, 3). The lock case (7) is designed to be deformable in response to forces (F) that are acting thereon and those caused by acceleration, for example in the event of a crash. According to the invention, above a certain force (F) the deformable lock case (7) rests against the locking mechanism (2, 3) in order to increase a common section modulus.