Vehicle Headlamp Optical Unit Linkage Mechanism
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Solution Overview
Problem
Conventional vehicle headlamps require multiple components and space to provide various lighting functions, leading to increased complexity and cost.
Innovation Solution
A variable headlamp apparatus with an optical unit, guide unit, and link unit connected by a single drive unit, allowing the optical unit to move along a fixed path and switch light irradiation direction, reducing the need for multiple drive units and enabling various lighting functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple drive units are used to provide various lighting functions, then lighting functionality is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
A single drive unit is designed to perform multiple functions by controlling different optical units (main beam, fog light, corner light) through a linkage mechanism, eliminating the need for separate drive units for each lighting function and thereby reducing device complexity while maintaining versatility
Solution Approach 2:
Multiple optical units that previously required separate drive units are now controlled by a single integrated drive unit through a common linkage mechanism, merging the control functions into one unified system that reduces overall complexity
2Ease of operation
If multiple drive units are installed, then lighting control capability is improved, but weight and manufacturing cost increase
Solution Approach 1:
The single drive unit is designed with multi-functional capability to control various optical units through the linkage mechanism, providing comprehensive lighting control while minimizing weight by eliminating redundant drive units
3Adaptability or versatility
If multiple optical units are controlled by separate drive units, then lighting function versatility is improved, but layout complexity increases
Solution Approach 1:
The optical system is segmented into multiple independent optical units (main beam, fog light, corner light) that can be controlled individually through the linkage mechanism, allowing functional versatility while maintaining a compact and organized layout through systematic arrangement
4Device complexity
If a single drive unit controls multiple optical units, then device complexity is reduced, but control precision may be compromised
Solution Approach 1:
A linkage mechanism acts as an intermediary between the single drive unit and multiple optical units, transmitting and distributing the control signals with high precision to each optical unit, thereby maintaining control precision while reducing device complexity
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 apparatus achieves reduced manufacturing costs, weight, and layout complexity by utilizing a single drive unit to switch light irradiation directions, enabling multiple lighting functions without the need for multiple drive units.
Implementation Method 1
a projection lens coupled to the optical casing and disposed in the light irradiation direction of the emitter so that an incident light thereon is emitted to the fixed path
Implementation Method 2
The incident part of the projection lens may be formed with a total reflection portion that is matched to each of the LEDs and protrudes in a direction facing the emitter to totally reflect incident light
Data Source
AI summary
A variable headlamp apparatus for a vehicle is capable of realizing various lighting functions by switching positions of the plurality of optical units only with a single drive unit. The variable headlamp apparatus includes: an optical unit having an emitter to emit light; a guide unit installed with the optical unit to guide a position of the optical unit to a fixed path; a link unit connected to the optical unit and including multiple links rotatably connected to each other to change the position of the optical unit; and a drive unit to rotate the links. In particular, the optical unit moves along the fixed path of the guide unit while switching a light irradiation direction of the emitter.