Automotive Glass Encapsulation Assembly with Integrated Guiding Rail
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Solution Overview
Problem
Existing encapsulation assemblies for automotive glass face issues with inaccuracy in fixing and positioning, leading to gaps and interference, and have complex mounting and maintenance processes, especially in integral designs, which affect manufacturing efficiency and sealing effectiveness.
Innovation Solution
An encapsulation assembly for automotive glass comprising a first glass, a plastic guiding rail, a sealing strip, and a decorative layer, where the second glass is slidably connected in the guiding rail, with a glossy decorative layer integrally injection-molded on the rail, and a sealing strip fixed between opposing walls, improving matching accuracy and sealing, and reducing the number of fitting processes through injection molding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If independent rear quarter window structure is used, then mounting flexibility and cost are improved, but fixing accuracy and positioning precision deteriorate
Solution Approach 1:
The patent introduces a positioning clamp as an intermediary component between the rear quarter window glass and the door frame. This clamp serves as a mediator that provides both flexible mounting (by being a separate, removable component) and precise positioning (through its specifically designed positioning structure with positioning holes and positioning edges). The positioning clamp resolves the contradiction by decoupling the mounting flexibility from the positioning precision requirements.
Solution Approach 2:
The patent segments the rear quarter window assembly into multiple independent components: the rear quarter window glass, the positioning clamp, the sealing strip, and the guiding rail. This segmentation allows each component to be optimized independently - the positioning clamp can be designed specifically for accurate positioning while the glass remains flexible for mounting. The modular segmented structure enables both ease of manufacture and high positioning precision simultaneously.
2Device complexity
If integral rear quarter window structure is used, then component count is reduced, but mounting complexity and maintenance difficulty increase
Solution Approach 1:
The patent applies segmentation by dividing the integral structure into modular components - specifically separating the positioning clamp from the guiding rail and glass assembly. This segmentation maintains a reduced component count compared to traditional independent structures while enabling easy mounting and maintenance. The positioning clamp can be independently installed and removed without affecting the guiding rail or glass, simplifying maintenance operations.
Solution Approach 2:
The patent introduces dynamic characteristics through the sliding mechanism where the rear quarter window glass can move along the guiding rail. This dynamic design allows the glass to be easily positioned and secured during mounting, and facilitates simple maintenance by allowing the glass to be slid out and back in. The dynamic sliding connection reduces mounting complexity while maintaining ease of operation.
3Ease of manufacture
If traditional sealing methods are used, then manufacturing simplicity is maintained, but sealing effectiveness and appearance quality deteriorate
Solution Approach 1:
The patent uses a flexible sealing strip made of elastic material as a thin film element to provide effective sealing between the rear quarter window glass and the door frame. The elastic nature of the sealing strip allows it to deform and conform to the mating surfaces, ensuring reliable sealing effectiveness. Despite using this advanced sealing technique, the manufacturing remains relatively simple as the sealing strip is a separate, easily installable component that can be pressed into place without complex assembly processes.
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
The solution enhances the accuracy and appearance of the assembly, improves sealing and reduces wind noise and water leakage, while simplifying the manufacturing process and maintaining efficiency by precisely controlling size tolerances and integrating decorative elements.
Implementation Method 1
the encapsulation component for automotive glass is formed by integrally injection molding
Implementation Method 2
the glossy decorative layer is integrally injection-molded on the plastic guiding rail
Data Source
AI summary
The present disclosure relates to an encapsulation assembly for automotive glass including first glass, an encapsulation component, a plastic guiding rail, a sealing strip, and a decorative layer. Second glass is slidably connected in the plastic guiding rail. One end of the plastic guiding rail is fixedly connected to an edge of the first glass by means of integrally injection-molding the encapsulation component. The other end of the plastic guiding rail is provided with a guiding groove for guiding sliding of the second glass. The guiding groove includes an upper wall and a lower wall opposite to each other. The sealing strip is fixed between the upper wall and the lower wall. The second glass and the sealing strip slidably cooperate. A side of the plastic guiding rail facing outside of a vehicle is provided with the decorative layer by injection molding.