Headlamp Fastening Assembly With Breakaway Latch Elements
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Solution Overview
Problem
Existing fastening systems for headlamps in motor vehicles lack defined failure mechanisms and are cumbersome to assemble, leading to potential damage and high assembly tolerances.
Innovation Solution
A fastening device comprising a first and second fastening element with a latching connection and a predetermined breaking point, allowing for reversible detachment and precise assembly, with the second element being replaceable to protect the headlamp and vehicle from damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional fastening system is used to secure headlamps to motor vehicles, then the headlamp can be fastened to the vehicle, but the assembly process becomes cumbersome and requires high assembly tolerances
Solution Approach 1:
The fastening device is divided into two separate fastening elements: a first fastening element that connects to the motor vehicle and a second fastening element that connects to the headlamp. These elements can be reversibly detached and reconnected through a latching connection, enabling simple and rapid assembly while reducing complexity compared to traditional integrated fastening systems.
2Reliability
If a traditional fastening system is used without defined failure mechanisms, then the headlamp can be fastened securely, but damage can occur to the motor vehicle and/or headlamp in case of failure
Solution Approach 1:
A predetermined breaking point is intentionally designed into the first and/or second fastening elements. This breaking point ensures that in the event of excessive force or failure, the fastening element breaks at a predetermined location rather than causing damage to the headlamp or motor vehicle. The breaking point acts as a safety mechanism that fails safely.
3Productivity
If the fastening device uses a latching connection with predetermined breaking point, then defined failure and rapid assembly are achieved, but the fastening device requires separate fastening elements
Solution Approach 1:
The first fastening element and second fastening element are designed to connect to each other through a latching connection, effectively merging into a single functional unit during operation. This latching connection allows for rapid assembly and disassembly while maintaining the benefits of having separate elements for defined failure protection. The two elements work together as an integrated system.
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 defined failure and rapid assembly, reduces manufacturing and assembly tolerances, and protects the headlamp and vehicle from damage by allowing replacement of only the affected element.
Implementation Method 1
For assembling the fastening device, the first fastening element is pressed hydraulically into the second fastening element, in particular by means of a tool
Implementation Method 2
The latching connection, in particular in conjunction with the pressing, represents in particular a positive-locking and frictional connection
Data Source
AI summary
The invention relates to a fastening device for fastening a headlamp in a motor vehicle, having a first and a second fastening element, which are connected to one another by means of a latching connection, wherein the first fastening element and/or the second fastening element have a predetermined breaking point.