Vehicle Headlamp Support Frame Dual-Axis Pivot Mounting
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Solution Overview
Problem
Modern vehicle headlights with heavy LED or laser technology face challenges in stable mounting due to single-point fixation of support frames, leading to light image trembling and instability, especially on uneven ground, while also requiring dynamic adjustment options for cornering lights and headlight range control.
Innovation Solution
The support frame is pivotably mounted about a second axis transverse to the first axis, with an actuating unit fixed to the support frame for displacement, allowing for improved stability and reduced vibration, enabling dynamic adjustments without pivoting the entire frame, and allowing for independent presetting of the optical axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the support frame is fixed at a single point to the housing, then the device complexity is reduced, but the stability of the light module mounting deteriorates leading to light image trembling
Solution Approach 1:
The support frame is segmented into multiple mounting points (at least two pivot points) instead of a single fixed point, distributing the load and improving stability while maintaining manageable structural complexity
Solution Approach 2:
The support frame is made pivotable about a second axis (horizontal) in addition to the first axis (vertical), adding a dimensional degree of freedom that improves stability by allowing dynamic adjustment and compensation for vehicle movements
2Manufacturing precision
If the entire support frame is pivoted to adjust the optical axis, then the presetting of the headlight is achieved, but the deflection increases requiring larger gap dimensions
Solution Approach 1:
The actuating unit is extracted from the housing and fixed directly to the support frame, allowing the light module to be adjusted independently of the support frame's position, thereby reducing the required gap dimensions
Solution Approach 2:
The adjustment function is segmented between the support frame's pivotability (for dynamic adjustments) and the actuating unit's displacement (for optical axis presetting), reducing the deflection required from the entire assembly
3Illumination intensity
If heavy light modules are used for LED or laser technology, then the illumination intensity is improved, but the stability of mounting deteriorates due to increased weight
Solution Approach 1:
The support frame is divided into multiple mounting points (at least two pivot points) to distribute the weight of heavy light modules, preventing overloading at any single point and maintaining mounting stability
Solution Approach 2:
The support frame is made pivotable about both a first vertical axis and a second horizontal axis, creating a more stable spatial configuration that can better support and position heavy light modules while reducing vibration and instability
Data Source
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AI summary
In a vehicle headlight comprising a housing (2), a light module (4) and a support frame (3) for the light module (4) pivotably fixed to the housing (2), wherein the light module (4) is pivotably fixed to the support frame (3) about a first axis (14) extending transversely to the direction of emission of the vehicle headlight and can be driven to pivot about the first axis (14) by means of an actuating unit (10) fixed to the support frame (3), the support frame (3) is pivotably mounted about a second axis (8) extending transversely to the first axis (14) and the actuating unit (10) is slidably fixed to the support frame (3) in the direction of the second axis (8).