Vehicle Headlamp Linkage for Precise Beam Pattern Adjustment
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Solution Overview
Problem
Existing vehicle headlamp systems face challenges in adjusting light patterns effectively, as they often rely on rigid linkages that limit the flexibility in achieving optimal beam configurations, particularly in synchronizing the rotation of upper and lower reflectors to create both high and low beams.
Innovation Solution
A length-adjustable link system is introduced, where the link connects the upper and lower light-configuring modules with offset pivot points, allowing for angular adjustments of the high-beam module relative to the vertical axis using a screw-adjustment arrangement and gear mechanisms, such as rack and pinion or worm gear, to optimize the emitted light patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rigid link bracket is used to connect upper and lower reflectors, then the structural stability is improved, but the flexibility in adjusting light patterns deteriorates
Solution Approach 1:
The patent transforms the rigid link bracket into a dynamic adjustment system by introducing an adjustable link with variable length capability. The link can be extended or retracted to change the angular relationship between upper and lower light modules, enabling dynamic adjustment of light patterns while maintaining structural connection. This resolves the contradiction by making the previously static rigid structure adaptable to different lighting configurations.
2Adaptability or versatility
If the link length is made adjustable to improve light pattern flexibility, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical adjustment mechanisms with a more streamlined system. Instead of using multiple linkages or complex gear systems, the invention employs an adjustable link that can be extended or retracted along its longitudinal axis, coupled with a simple rotation mechanism at the pivot point. This substitution simplifies the overall device complexity while achieving the desired light pattern adaptability.
3Ease of operation
If offset pivot points are used to enable angular adjustment, then the ease of operation is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent introduces an intermediary adjustable link that mediates between the upper and lower light modules. This link acts as a buffer that can accommodate variations in pivot point alignment through its own adjustment capabilities (length variation and rotation). The intermediary element absorbs the manufacturing tolerances, allowing the offset pivot points to be positioned with standard precision while still achieving the desired angular adjustment functionality.
Data Source
AI summary
Disclosed is a system enabling micro-adjustments in headlamps having upper and lower modules. A link exists between the upper and lower modules, the length of the link is made to be adjustable. The lower module is located on a pivot so that adjustments made to the length of the link result in a desired lighting pattern.