Vehicle Lamp Leveling Actuator With Bracket-Free Aiming Structure
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Solution Overview
Problem
Existing vehicle lamp designs with optical axis adjustment mechanisms require additional space, increased parts, and complex mold structures due to the inclusion of brackets and elastic extensions, complicating assembly and increasing costs.
Innovation Solution
A leveling actuator with a simple structure that includes a leveling shaft, case, cover, and aiming nut, allowing for space-saving integration within the lighting body by sliding the shaft in the axial direction and using a rotary motor for precise optical axis adjustment without a bracket, reducing the number of parts and simplifying the mold structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bracket is interposed between the lamp body and the aiming mechanism, then the aiming mechanism can be supported, but the space required is enlarged and the number of parts increases
Solution Approach 1:
The patent integrates the bracket function directly into the lamp body structure. The lamp body is designed with an integrated support structure that eliminates the need for a separate bracket component, thereby reducing the number of parts while maintaining support stability for the aiming mechanism.
Solution Approach 2:
The lamp body is designed to serve multiple functions: it provides structural housing, mounting support for the aiming mechanism, and structural reinforcement. This multi-functionality eliminates the need for dedicated bracket components, reducing part count and assembly complexity.
2Reliability
If a bracket is interposed between the lamp body and the aiming mechanism, then the aiming mechanism can be supported, but assembly man-hours increase
Solution Approach 1:
By integrating the support function into the lamp body, the number of assembly steps is reduced. The aiming mechanism can be directly mounted to the lamp body without requiring separate bracket installation, thereby reducing assembly man-hours and improving productivity.
3Manufacturing precision
If an elastic extension piece is provided on the slider to eliminate gaps, then the nut sliding guide and slider fit tightly, but the mold structure becomes complicated
Solution Approach 1:
The patent achieves gap elimination through precise dimensional control and tolerance specification in the mold design. By optimizing the dimensional parameters and fit tolerances of the slider and nut sliding guide, tight fitting is achieved without requiring complex elastic extension pieces, thereby keeping the mold structure simple.
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 solution achieves space-saving and weight reduction in vehicle lamps by eliminating the need for brackets and simplifying the mold structure, while maintaining precise optical axis adjustment capabilities.
Implementation Method 1
a leveling shaft (14) slidably driven in an axial direction
Implementation Method 2
a tip side is connected to the lighting fixture unit via a pivot portion
Implementation Method 3
an aiming bolt inserted into the cover from the hole portion is located on a same axis as the leveling shaft while being screwed into the aiming nut
Data Source
AI summary
A leveling actuator includes a leveling shaft slidably driven in an axial direction in a state in which a tip side is connected to a lighting fixture unit via a pivot portion, a case configured to accommodate the leveling shaft therein from an opening portion on a back side and configured to cause the tip side of the leveling shaft to protrude forward from a hole portion on a front side, a cover configured to close the opening portion of the case and having a hole portion on a back side, and an aiming nut provided to face the hole portion on the back side of the cover, an aiming bolt inserted into the cover from the hole portion being located on the same axis as the leveling shaft while being screwed into the aiming nut.