HUD Mirror Adjustment Clamping for Stress-Free Precision
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Solution Overview
Problem
Existing adjustment devices for head-up displays, particularly in vehicles, face challenges in providing a play-free adjustment kinematic without introducing unwanted stresses into the reflection element, such as mirrors, and often have complex constructions that complicate assembly.
Innovation Solution
The adjustment device features a clamping mechanism with rotatably coupled clamping elements and a biasing element that maintains a constant clamping force, allowing for easy adjustment of the reflection device's position and orientation without applying direct stress to the reflection element, using a support structure and a drive unit to displace the clamping device along a first axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a clamping mechanism is used to achieve play-free adjustment, then adjustment precision is improved, but the reflection element may be subjected to unwanted stresses
Solution Approach 1:
The patent introduces a clamping device with clamping elements that act as intermediaries between the adjustment mechanism and the reflection element. These clamping elements securely hold the reflection element while allowing adjustment, preventing direct transmission of stresses to the reflection element surface.
Solution Approach 2:
The clamping device is designed to be displaceable along a first axis relative to the support structure, allowing dynamic adjustment of the reflection element position. The clamping force can be applied and released as needed, enabling play-free adjustment when required while avoiding continuous stress application.
2Manufacturing precision
If a complex clamping mechanism is designed to reduce vibrations, then image quality is improved, but device complexity increases
Solution Approach 1:
The clamping device is divided into separate clamping elements that can be independently positioned and adjusted. This segmentation allows each element to perform a specific function in reducing vibrations while keeping the overall structure manageable and not overly complex.
Solution Approach 2:
The clamping elements serve as intermediaries that specifically target vibration reduction without requiring a completely complex mechanism. By positioning these elements strategically, the patent achieves vibration reduction and improved image quality with a relatively simple added structure.
3Stability of the object's composition
If direct clamping force is applied to the reflection element, then adjustment stability is improved, but the reflection element may be damaged or stressed
Solution Approach 1:
The clamping elements act as intermediaries between the adjustment mechanism and the reflection element. They provide the necessary clamping force for stable adjustment while being designed to contact the reflection element in a way that distributes force and avoids concentrated stresses that could cause damage.
Solution Approach 2:
The clamping elements are designed with specific local properties at their contact points with the reflection element. The contact surfaces and geometry are optimized to provide sufficient clamping force for stability while minimizing stress concentration, applying force only where needed without damaging the reflection element.
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 solution enables a simple, stress-free adjustment mechanism that reduces vibrations and improves image projecting quality, facilitating easy assembly and maintaining a consistent clamping force during displacement.
Implementation Method 1
the clamping device comprises a biasing element for maintaining a constant clamping force
Data Source
AI summary
An adjustment device for adjusting an orientation of a reflection device of a head-up display, to an adjustment unit, to a head-up display and to a vehicle is disclosed. The adjustment device includes a support structure and a clamping device, wherein the clamping device is configured to be displaced along a first axis and comprises a first clamping element and a second clamping element arranged opposite to the first clamping element and forming a clamping gap together with the first clamping element, wherein the clamping device is configured to receive and clamp an adjustment lever of the reflection device between the first clamping element and the second clamping element, wherein the first clamping element and the second clamping element are made of separate parts, and wherein the first clamping element and the second clamping element are rotatably coupled to each other about a second axis.