Projector Reflector Shielding Element Automated Assembly
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Solution Overview
Problem
The existing methods for assembling headlight optical modules risk damaging sensitive areas of the reflector and are prone to assembly errors, particularly when positioning a screening element from the front, which can lead to a significant loss of luminous flux due to the large insertion cavity required for the shield and light source, and there is a need to automate the process to improve efficiency and precision.
Innovation Solution
The solution involves automating the placement of a screening element within the headlight device reflector from the front, using keying marks on the shield to ensure precise alignment and compatibility, and employing a conical shape for the retaining foot and cavity to facilitate precise positioning without human intervention, allowing for automated assembly and reducing the risk of contact with reflective surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the shield and light source are positioned together through a common crown from the rear of the reflector, then the assembly process is simplified, but the insertion cavity becomes large causing significant loss of reflective surface area and luminous flux
Solution Approach 1:
The patent divides the positioning function into two independent parts: the light source is positioned from the rear through its own cavity, while the shield is positioned from the front through a separate smaller cavity. This segmentation allows each cavity to be minimized in size, preserving reflective surface area while maintaining assembly simplicity through independent positioning paths.
2Area of stationary object
If the shield is positioned from the front within the reflector, then the insertion cavity size is reduced preserving reflective surface, but the risk of damaging sensitive optical surfaces increases
Solution Approach 1:
The patent introduces an automated positioning system as an intermediary between the operator and the reflector. This system uses keying marks on the shield and corresponding detection means to automatically align and position the shield, eliminating manual contact with the reflective surface while preserving the benefits of front positioning for cavity size reduction.
3Ease of operation
If manual assembly is used for positioning the shield, then flexibility is maintained, but assembly errors increase and automation is not achieved
Solution Approach 1:
The patent implements a self-aligning positioning system where the shield carries keying marks that automatically engage with detection means during automated positioning. The system self-corrects alignment through the keying mechanism, providing both high precision and repeatable accuracy without requiring manual intervention, thus achieving both precision and operational efficiency.
4Ease of operation
If a large insertion cavity is used to accommodate both shield and light source, then assembly is easier, but luminous flux is significantly lost
Solution Approach 1:
The patent segments the positioning operations so that the light source and shield are positioned independently through separate cavities. This allows each cavity to be sized minimally for its specific component, dramatically reducing the total non-reflective area compared to a single large cavity, while the automated system maintains assembly ease through standardized positioning procedures.
Data Source
Figure 1A~5
Figure 3~7
AI summary
This is a covering element (300) intended to be placed within a reflector (400) of a projector device. The covering element includes, in particular, a support foot (301) and a covering portion (302) intended to at least partially surround a light source (401) of the projector device. The covering element includes at least one keying mark (316) to reveal a reference number for said covering element.