Segmented Lens Holding Structure for Coaxial Vehicle Lamp Assembly
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Solution Overview
Problem
Existing lens holding arrangements for vehicle illumination devices require significant assembly work, especially when multiple lenses are arranged coaxially in different directions.
Innovation Solution
The lens holding arrangement is segmented into moveable segments, each surrounding a circumferential angle range, with fasteners and half-shells that facilitate precise lens positioning and assembly, utilizing attachment and spring elements for secure holding and tolerance compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a large number of lenses are arranged coaxially in a single surrounding body, then the illumination device can provide comprehensive lighting coverage, but the assembly work increases significantly
Solution Approach 1:
The surrounding body is divided into multiple segments (first surrounding body, second surrounding body, etc.) that can be assembled separately and then joined together. Each segment can accommodate multiple lenses, allowing the assembly process to be broken down into smaller, more manageable steps that reduce overall assembly complexity and time.
2Manufacturing precision
If lenses are fixed rigidly in position, then positioning precision is high, but tolerance accumulation during assembly increases
Solution Approach 1:
The connection between segments incorporates compensation mechanisms that allow for axial movement and adjustment. This enables tolerance compensation during assembly, where small variations in segment positioning can be absorbed without affecting the final lens positioning precision. The system transitions from rigid fixed positioning to controlled flexible positioning.
3Strength
If segments are designed with fastening flanges and fasteners, then segment joining is secure, but the device structure becomes more complex
Solution Approach 1:
The fastening flange is integrated directly into the segment structure itself, combining the segment body and fastening feature into a single unified component. This eliminates the need for separate fastening brackets or additional structural elements, reducing overall device complexity while maintaining secure segment joining through the flange and fastener connection.
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 design reduces assembly work, ensures precise lens positioning, enhances lighting efficiency, and improves contrast and mapping quality while providing axial compensation and protection against external light effects.
Implementation Method 1
spring elements are provided for on the inner surface of the segments and/or the half-shells by means of which the lenses are held precisely in the assembly position
Implementation Method 2
fasteners for fastening the segments
Implementation Method 3
attachment elements to which the lenses make contact with a front or back edge
Data Source
AI summary
A lens holding arrangement for lenses of an illumination device for vehicles is provided. The holding arrangement includes a surrounding body which surrounds a number of lenses arranged coaxially to each other and at an axial distance to each other. The holding arrangement also includes a number of attachment elements on an inner surface to which the lenses make contact with a front or back edge. The surrounding body is segmented with a number of segments that surround in each case the lenses in a circumferential angle range (φ), and with fasteners for fastening the segments.