Detachable HUD Mirror Fixation for Stable Virtual Image Assembly
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Solution Overview
Problem
Existing head-up display systems for vehicles are inefficient due to the permanent attachment of the large aspherical mirror using hot melt, making mirror replacement costly and impractical.
Innovation Solution
A detachable mirror fixation device with a two-part structure, comprising a body part and a clipping part that snap interlock, allowing the mirror to be easily removed and replaced without affecting other components, and an expansion anchor for secure attachment to the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mirror is permanently attached to the housing using hot melt, then the mirror stability and vibration resistance are improved, but the mirror replacement becomes costly and impractical
Solution Approach 1:
The fixation device is divided into two separate parts: a body part that remains attached to the housing and a clipping part that attaches to the mirror. This segmentation allows the mirror to be detached by removing only the clipping part, while the body part remains in the housing, enabling easy mirror replacement without affecting other components.
Solution Approach 2:
The clipping part is designed to be extractable from the body part, allowing the mirror to be removed independently from the housing. The clipping part can be detached by applying force to separate it from the body part, enabling mirror replacement without disposing of the entire apparatus or housing.
2Ease of manufacture
If the mirror is permanently attached using hot melt, then the assembly process is simplified, but the mirror cannot be removed or replaced
Solution Approach 1:
The fixation device transitions from a static permanent bond (hot melt) to a dynamic reversible connection. The clipping part can be attached to and detached from the body part multiple times, allowing the mirror to be installed, removed, and reinstalled as needed, providing adaptability while maintaining assembly simplicity.
3Ease of repair
If a detachable fixation device is used, then mirror replacement becomes easy and cost-effective, but the complexity of the fixation device increases
Solution Approach 1:
The fixation device is segmented into two functional parts with clear roles: the body part provides the mounting interface to the housing, while the clipping part provides the attachment mechanism to the mirror. This segmentation enables easy mirror replacement while keeping each part relatively simple in structure.
Solution Approach 2:
The clipping part acts as an intermediary element between the mirror and the housing. It provides the detachable connection functionality without requiring complex mechanisms in either the mirror or housing, simplifying the overall system while enabling easy replacement.
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
Enables cost-effective and customizable assembly, allowing for mirror replacement without discarding the entire apparatus, reducing waste and maintenance costs while maintaining mirror stability and distortion-free virtual image projection.
Implementation Method 1
The clipping part is configured to snap back and interlock with the body part after being elastically deformed
Implementation Method 2
the image received by the mirror is reflected to create the virtual image
Data Source
AI summary
The present invention is related to an apparatus for generating a virtual image, comprising a housing (1) and a mirror (32), wherein the mirror (32) is arranged inside the housing (1), such that an image received by the mirror (32) is reflected to create the virtual image, wherein the mirror (32) is fixed to the housing (1 ) by at least one fixation device (2) and wherein the fixation device (2) is configured for the mirror (32) to be detachable from the housing (1).