Vehicle Head-Up Display Latch Mechanism for Optical Quality
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Solution Overview
Problem
Conventional head-up display devices for vehicles face issues with optical quality degradation due to screw fixation of the combiner and bracket, and difficulty in replacing the combiner when it is damaged.
Innovation Solution
A head-up display device with a combiner assembled in a latch manner, featuring a support part, display part, rear cover part, front cover part, and latch part, allowing for easy assembly and replacement without degrading optical quality, with snap-fit connections and a rotatable latch to prevent stress transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the combiner and bracket are fixed by a screw, then the combiner is firmly fixed, but the combiner may be deformed by the fastening force of the screw, thereby degrading optical quality
Solution Approach 1:
The patent replaces the screw-based mechanical fastening system with an adhesive bonding system. The combiner is fixed to the bracket using adhesive, which eliminates the fastening force concentration and deformation caused by screws while maintaining firm fixation. This substitution of mechanical connection with chemical bonding resolves the contradiction between fixing strength and optical quality.
2Strength
If the combiner and bracket are coupled by the adhesive, then the combiner is firmly fixed, but it is difficult to replace only the combiner
Solution Approach 1:
The patent segments the combiner assembly into separable components: the combiner itself and the bracket, connected through a designed adhesive bonding interface. This segmentation allows the combiner to be replaced independently from the bracket by removing the adhesive bonding, while still maintaining firm fixation during normal operation. The bonding interface is designed to facilitate controlled separation for maintenance purposes.
3Productivity
If the combiner is assembled in a latch manner, then the combiner can be rapidly assembled and replaced, but the structure becomes more complex
Solution Approach 1:
The patent extracts the fastening function from the main combiner structure and implements it through a separate latch mechanism. This latch mechanism can be quickly engaged and disengaged to assemble and replace the combiner rapidly. By separating the fastening function into a dedicated simple latch component rather than integrating it into the combiner structure itself, the overall structural complexity is minimized while achieving rapid assembly capability.
Data Source
AI summary
A head-up display device for a vehicle may include: a housing mounted in a vehicle; a cover covering an entrance of the housing; a driver mounted in the housing; and a combiner coupled to the driver so as to operate separately from the cover, erected from the inside to the outside of the housing so as to display vehicle information, and replaceably assembled in a latch manner.