Headlight Reflector Cam Adjustment for Stable Cut-Off Alignment
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Solution Overview
Problem
Existing automotive lighting modules suffer from imprecise beam orientation adjustment and are prone to mechanical vibrations, leading to beam shaking and increased production costs due to the need for limit stops and disengagement mechanisms.
Innovation Solution
A cam and gear system with an eccentric mechanism, incorporating a worm screw and toothed wheel, provides precise and stable beam orientation adjustment, eliminating the need for stops and reducing module size and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the light beam is directed horizontally at high speed along the driving direction, then the illumination intensity and driving performance are improved, but the light beam may directly enter the eyes of oncoming drivers causing glare and safety hazards
Solution Approach 1:
The patent employs dynamic adjustment of the light beam orientation through an orientation adjusting device that can change the beam direction in real-time. The light beam orientation is dynamically adjusted to tilt upward or downward based on driving conditions, allowing the system to maintain high illumination intensity while preventing direct horizontal entry into oncoming drivers' eyes, thus resolving the contradiction between illumination effectiveness and glare prevention
Solution Approach 2:
The patent changes the orientation parameter of the light beam from fixed horizontal direction to variable angles. By adjusting the tilt angle of the light beam upward or downward, the system maintains sufficient illumination intensity for driving while eliminating the harmful horizontal glare effect on oncoming drivers, thereby resolving the contradiction between these two opposing requirements
2Ease of manufacture
If a fixed orientation light module is used, then the structure is simple and manufacturing is easy, but the light beam cannot be adjusted to avoid glare or adapt to different driving conditions
Solution Approach 1:
The patent transforms the fixed orientation light module into a dynamic system by incorporating an orientation adjusting device. This device enables the light beam to be tilted upward or downward according to different driving scenarios, providing adaptability to various driving conditions while maintaining a relatively simple structural design that does not significantly complicate manufacturing processes
Solution Approach 2:
The patent designs the light module with multi-functionality by enabling it to operate in different orientations. The same light module can serve both as a standard headlight in normal conditions and as a glare-preventing beam when adjusted to tilted angles, thereby achieving adaptability to different driving conditions without requiring multiple separate light sources, keeping the manufacturing process manageable
3Illumination intensity
If the light beam is directed horizontally for maximum illumination, then the visibility ahead is improved, but it creates safety hazards for oncoming drivers and pedestrians
Solution Approach 1:
The patent changes the orientation parameter of the light beam from fixed horizontal direction to variable angles. By adjusting the tilt angle of the light beam upward or downward, the system maintains sufficient illumination intensity for driving while eliminating the harmful horizontal glare effect on oncoming drivers, thereby resolving the contradiction between these two opposing requirements
Solution Approach 2:
The patent converts the potentially harmful horizontal light beam into a beneficial tilted beam. By redirecting the light beam upward or downward at appropriate angles, the system transforms what would be dangerous glare into effective illumination that improves visibility ahead without creating safety hazards for oncoming drivers and pedestrians
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
The system achieves precise and stable beam orientation adjustment, reducing production costs and module size while preventing beam misalignment, using a compact and economical design.
Implementation Method 1
a light beam orientation adjusting device (200) configured to tilt the headlight beam upwardly or downwardly by adjusting an orientation of the light module (100)
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a light module (2) for a vehicle, comprising a casing (4) defining a housing (12) with the following arranged therein: at least one light source mounted in a fixed manner relative to the casing, a reflector (16) configured so as to generate a light beam comprising a cut-off line, and a device (18) for manually adjusting the orientation of the cut-off line, the reflector (16) being mounted so as to be movable about an axis of rotation relative to the casing, said adjustment device (18) being connected to the optical element (16) and being configured to cooperate with an adjustment member or tool external to the module. According to the invention, the adjustment device (18) comprises a cam and gear system (36) having a camshaft (38) and an eccentric (40), the eccentric (40) being designed to cooperate with a part of the optical element (16) when the camshaft (38) is rotated.