Supplemental Driver Assembly for Vehicle Headlamp Adjuster
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Solution Overview
Problem
Existing vehicle headlamp adjusters require frequent adjustments due to accidents, maintenance, and vibrations, necessitating improved mechanisms for precise and accessible aim adjustments.
Innovation Solution
A supplemental driver assembly with a supplemental drive gear and drive guide housing, allowing for rotational movement and additional adjustment access points through a tool engagement recess and drive guide passages, enhancing the adjustability of vehicle headlamps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a traditional adjuster with a single drive gear is used, then the structure is simple, but the adjustment precision and accessibility are limited
Solution Approach 1:
The adjuster is divided into multiple functional components: a primary drive gear for coarse adjustments and a supplemental drive gear for fine adjustments. Each gear operates independently through separate access points, allowing the complex adjustment function to be broken down into manageable segments that improve precision without overwhelming structural complexity
Solution Approach 2:
The supplemental driver assembly is positioned at a different spatial location (second access point) relative to the primary driver assembly (first access point). This dimensional separation allows adjustments to be made from multiple directions, improving accessibility and precision by enabling fine-tuning from an additional operational dimension
2Reliability
If frequent adjustments are made to maintain proper lamp aim, then the lamp aim accuracy is maintained, but the time and effort required increases
Solution Approach 1:
The adjuster is pre-configured with both primary and supplemental drive gears positioned for accessibility. The primary drive gear handles major aim corrections, while the supplemental drive gear is ready for immediate fine-tuning. This preliminary arrangement of adjustment mechanisms eliminates the need for time-consuming setup or tool changes during frequent adjustments
Solution Approach 2:
The adjuster system transitions from a static single-gear mechanism to a dynamic multi-gear system where the supplemental drive gear can be engaged independently. This dynamic capability allows the system to adapt to different adjustment needs (coarse vs. fine) without requiring complete disassembly or reconfiguration, reducing adjustment time while maintaining accuracy
3Ease of operation
If a single access point is provided for adjustments, then the structure is compact, but the accessibility for adjustments is limited
Solution Approach 1:
The adjuster housing is segmented into multiple access points: a first access point for the primary driver assembly and a second access point for the supplemental driver assembly. This segmentation allows technicians to access different adjustment mechanisms from different locations, improving ease of operation without requiring a large centralized opening that would compromise structural integrity
Data Source
AI summary
A supplemental driver assembly is disclosed that includes a supplemental drive gear having an upper portion including a tool engagement recess and circumferential supplemental drive gear teeth, and a cylindrical neck extending axially from the upper portion to an output shaft having one or more drive engagement protrusions, as well as a drive guide housing with a gear pocket for housing the upper portion of the supplemental drive gear, the gear pocket including a cylindrical pocket wall extending from a perimeter of a pocket floor, the pocket wall having a drive guide passage extending therethrough for receiving a side adjuster tool, wherein the gear pocket receives the supplemental drive gear and allows for rotational movement of the upper portion within the gear pocket, and a cylindrical collar extending axially from the gear pocket.