Two-Part Vehicle Light Circlip Fixation Mechanism
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Solution Overview
Problem
Conventional LED retrofit lamps for vehicle exterior lighting require additional parts and complex assembly processes, which can lead to distortion and brittle connections, compromising optical properties and long-term maintenance.
Innovation Solution
A two-part device with a circlip fixation mechanism that securely engages a rounded shape, allowing for contact between two parts without the need for screws, rivets, or glue, thereby simplifying assembly and reducing the risk of damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional LED retrofit lamps use additional parts and complex assembly processes (screws, rivets, or glue), then the assembly can be completed, but the optical properties are compromised and the connections become brittle
Solution Approach 1:
The lamp assembly is divided into two separate parts (first part and second part) that can be independently manufactured and then joined together through the fixation face, allowing for modular assembly without compromising optical properties
Solution Approach 2:
A circlip serves as an intermediary fixing element that engages with the rounded shape at the fixation face, providing a secure connection between the two parts without requiring screws, rivets, or glue that could compromise optical integrity
2Strength
If conventional LED retrofit lamps use screws, rivets, or glue for assembly, then the parts can be fixed together, but the assembly process becomes complex and the risk of distortion increases
Solution Approach 1:
The fixation face with the rounded shape and circlip engagement enables the parts to self-align and self-fix during assembly, eliminating the need for complex fastening procedures with screws, rivets, or glue application
Solution Approach 2:
The circlip acts as a simple intermediary element that provides strong mechanical engagement through the rounded shape, achieving secure fixation without complex assembly procedures
3Duration of action of stationary object
If conventional LED retrofit lamps use traditional fixation methods, then the parts can be joined, but the risk of distortion and brittle connections compromises long-term maintenance
Solution Approach 1:
The separation into two parts with a dedicated fixation face allows for stress distribution and movement accommodation, preventing the brittle connections that occur with traditional fixed-joint methods
Solution Approach 2:
The circlip engagement with the rounded shape provides a flexible yet secure connection that accommodates thermal expansion and mechanical stress over time, ensuring long-term reliability without distortion
Data Source
AI summary
A two-part device, automotive lighting unit and method of manufacture are described herein. A two-part device includes an assembly. The assembly includes a first part having a first fixation face and a second part separate from the first part. The second part has a second fixation face. The first and second parts are arranged adjacent one another with the first fixation face in contact with the second fixation face. The assembly further includes a circlip fixation position that has a rounded shape transverse to the fixation face. The two-part device also includes a circlip, which engages the rounded shape at the circlip fixation position, fixing the first and second parts together.