Electrochromic Mirror Assembly for Precise Post-Cut Edge Finishing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing manufacturing processes for electrochromic rearview mirrors, particularly frameless designs, face challenges in accurately and securely fixing glass substrates during cutting and finishing, leading to potential damage and misalignment, which complicates the manufacturing process and reduces product quality.
Innovation Solution
The process involves adhering rear glass substrates to a glass sheet before cutting and forming front glass substrates, using back plates for fixture and alignment, and completing the electrochromic cell formation before cutting the front glass, allowing for precise handling and finishing of the front glass edges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If glass substrates are cut and finished before assembling the electrochromic cell, then the cutting and finishing processes are simpler, but the glass substrates are vulnerable to damage and misalignment during handling
Solution Approach 1:
The patent applies preliminary action by adhering the rear glass substrate to the front glass substrate before cutting and finishing operations. This sequence reversal protects the glass substrates from damage during handling while maintaining manufacturing simplicity. The rear substrate serves as a protective backing during the cutting and edge finishing processes.
2Manufacturing precision
If the front glass substrate is cut after cell formation, then edge finishing precision is improved, but the handling and fixing complexity increases
Solution Approach 1:
The patent merges the front and rear glass substrates into a single assembled unit before cutting and finishing operations. By combining the substrates with the electrochromic medium between them, the unit is easier to handle and fixture during edge finishing, reducing complexity while maintaining precision.
Solution Approach 2:
The electrochromic medium acts as an intermediary that bonds the front and rear glass substrates together, creating a unified structure that is easier to handle during cutting and finishing operations. This intermediary connection simplifies fixturing while enabling precise edge finishing.
3Manufacturing precision
If multiple manufacturing steps are performed before cutting the glass, then product quality is improved, but production time increases
Solution Approach 1:
The patent performs preliminary assembly of the electrochromic cell (adhering substrates, filling medium, sealing) before cutting and finishing the glass edges. This sequence allows all critical assembly steps to be completed with full alignment accuracy, while the cutting and finishing operations are streamlined afterward, optimizing both quality and production efficiency.
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 approach enhances manufacturing precision, reduces handling damage, and improves alignment accuracy, resulting in higher quality and yield of frameless electrochromic mirrors with reduced assembly costs and increased flexibility in design variations.
Implementation Method 1
The mirror reflective element often comprises an electrochromic reflective element having a front glass substrate and a rear glass substrate with an electrochromic medium sandwiched between the front and rear glass substrates
Data Source
AI summary
A vehicular interior electrochromic mirror reflective element includes a planar rear interior mirror-shaped glass substrate and a planar front interior mirror-shaped glass substrate. The front glass substrate is shape cut from a planar glass sheet. A perimeter seal establishes an interpane cavity between the rear glass substrate and the planar glass sheet at a respective planar front glass substrate portion of the planar glass sheet. An electrochromic medium is disposed in the interpane cavity. With the rear glass substrate joined with the respective planar front glass substrate portion of the planar glass sheet via the perimeter seal, the planar glass sheet is shape cut at the respective planar front glass substrate portion and the circumferential perimeter cut edges of glass substrates are processed to provide a circumferential rounded perimeter edge of the vehicular interior electrochromic mirror reflective element having a radius of curvature of at least 2.5 mm.