Vehicle Headlamp Shield Actuator Integration
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Solution Overview
Problem
Existing headlamp designs face issues with optical tolerance and increased size due to separate assembly of the shield and shield actuator, leading to inaccurate power transmission and assembly errors.
Innovation Solution
The headlamp design integrates the shield actuator and shield rotation shaft within the reflector, utilizing a power transmission device with gears and an electric motor to ensure smooth power transmission and reduce size, while maintaining accurate alignment of optical components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the shield actuator is provided outside the reflector, then the assembly process is simplified, but the overall size of the headlamp is increased
Solution Approach 1:
The shield actuator is integrated inside the reflector assembly, merging two previously separate components (shield actuator and reflector) into a single compact unit. This eliminates the need for external mounting of the shield actuator, thereby reducing the overall headlamp size while maintaining assembly simplicity through modular integration.
2Ease of manufacture
If the shield and shield actuator are separately assembled, then the manufacturing flexibility is improved, but the optical tolerance is excessively generated
Solution Approach 1:
The shield assembly is integrated with the reflector to form a pre-assembled unit with precisely controlled relative positions. This merging ensures that the shield and reflector maintain accurate optical alignment throughout the manufacturing and assembly process, eliminating cumulative errors that would occur with separate assembly of multiple components.
3Ease of repair
If the shield actuator is provided outside the reflector, then the maintenance accessibility is improved, but the power transmission is insufficient
Solution Approach 1:
The shield actuator is integrated inside the reflector assembly with direct mechanical coupling to the shield rotation shaft. This integration ensures reliable power transmission through minimized transmission paths and reduced mechanical play, while the modular design of the integrated assembly maintains ease of maintenance by allowing the entire unit to be serviced as a single component.
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
This integration improves power transmission efficiency, reduces optical tolerance, and minimizes the overall size of the headlamp by ensuring precise assembly and alignment of the shield and reflector components.
Implementation Method 1
an electric motor; and an output shaft which is connected to the electric motor
Implementation Method 2
a first gear which is engaged with the output shaft; and a second gear which is formed on the shield rotation shaft and engaged with the first gear
Implementation Method 3
a reflector which reflects light emitted from a light source
Implementation Method 4
a lens which the light emitted from the light source penetrates
Data Source
AI summary
A headlamp for a vehicle is provided. The headlamp includes: a reflector which reflects light emitted from a light source; a lens which the light emitted from the light source penetrates; a lens holder which supports the lens; and a shield assembly which is provided between the reflector and the lens holder.