Vehicle Lock Torque Support for Rear Hatch Noise Reduction
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Solution Overview
Problem
Conventional vehicle locks on rear hatches can produce disruptive low-frequency noise due to insufficient rigidity, causing oscillation about the transverse axis when driven, leading to a thrumming noise.
Innovation Solution
A vehicle lock design featuring a lock carrier with two opposing attachment points and torque support elements that extend perpendicular to the attachment axis, resting on the vehicle body to prevent oscillation, ensuring secure attachment and reduced noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the vehicle lock is fixed with only two opposing attachment points, then the installation is simple and the structure is straightforward, but the lock carrier oscillates about the attachment axis causing thrumming noise
Solution Approach 1:
The patent introduces torque support elements that extend in a direction perpendicular to the attachment axis, adding a third dimension to the attachment system. This dimensional extension prevents oscillation about the attachment axis while maintaining the simplicity of the two opposing attachment points for installation.
Solution Approach 2:
The torque support elements act as intermediary elements between the lock carrier and the vehicle body. These elements provide additional support and prevent oscillation without requiring complex modification of the existing attachment points, thus maintaining installation simplicity while eliminating noise.
2Object-affected harmful factors
If torque support elements are added to prevent oscillation, then the rigidity and noise reduction are improved, but the device complexity increases
Solution Approach 1:
The torque support elements are positioned locally at specific locations on the lock carrier where they are most effective in preventing oscillation. This localized approach provides noise reduction with minimal additional complexity, as the elements are only added where structurally necessary and do not require complex integration throughout the entire lock mechanism.
Data Source
AI summary
A vehicle lock, in particular for a rear hatch, has a lock support with at least two securing points lying opposite each other for securing the lock support to the body of a vehicle, in particular for screwing the lock support thereto. The two securing points lie on an imaginary securing axis. At least one torque support element of the vehicle lock is designed to rest against the body and is positioned so as to support the torque of a rotation about the securing axis.