Triangular Quarter Window Assembly for Frameless Zero-Step Sealing
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Solution Overview
Problem
The existing A-pillar quarter window assembly in automobiles is cumbersome to install, has low manufacturing efficiency, and lacks a sealing structure between the quarter window glass and guide rail, resulting in poor overall sealing performance.
Innovation Solution
A quarter window assembly featuring a triangular glass, a guide rail with a groove and fixing portion, a sealing member, and a fixing assembly including a lifting member and fixing bracket, where the sealing member is snapped into the groove, and the side edge of the triangular glass is fixed on the fixing portion, with the lifting member on the door sheet metal and the fixing bracket on the guide rail, improving installation convenience and sealing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the existing multi-component assembly method is used, then the structural stability is maintained, but the installation process becomes cumbersome and manufacturing efficiency decreases
Solution Approach 1:
The patent combines multiple separate components (inner guide rail, rubber quarter window, outer guide rail, and sealing structures) into an integrated assembly unit. The inner guide rail and rubber quarter window are pre-assembled with connecting arms and fasteners, reducing the number of separate installation steps and improving manufacturing efficiency while maintaining structural stability.
Solution Approach 2:
The patent implements preliminary assembly of the inner guide rail with the rubber quarter window, including pre-attached connecting arms and fasteners. This pre-assembly is performed before installation into the vehicle door, simplifying the final installation process and reducing on-site assembly complexity while ensuring proper alignment and structural integrity.
2Reliability
If traditional quarter window assembly is used, then structural support is adequate, but sealing performance between glass and guide rail is poor
Solution Approach 1:
The patent applies sealing structures at specific critical locations where sealing is needed most - between the quarter window glass and the guide rail system. The sealing members are strategically positioned at the interfaces between glass and rail components, providing targeted sealing enhancement without requiring complete redesign of the entire assembly structure.
3Strength
If multiple fastening steps are used, then connection strength is ensured, but installation time increases
Solution Approach 1:
The patent pre-assembles the inner guide rail with connecting arms and fasteners attached in advance. This preliminary preparation ensures that all connection components are ready and properly positioned before final installation, maintaining connection strength while reducing the time required during actual installation by eliminating on-site assembly steps.
Data Source
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AI summary
A quarter window assembly comprising a triangular glass, a guide rail, a sealing member and fixing assembly; the guide rail is provided with groove and a fixing portion disposed close to the groove; the sealing member is snapped into the groove, and a side edge of the triangular glass is fixed on the fixing portion and abuts against the sealing member; the fixing assembly includes a lifting member and a fixing bracket, the lifting member is disposed on a bottom edge of the triangular glass and is suitable for being fixed on the door sheet metal, and the fixing bracket is disposed on the guide rail and is suitable for being fixed on the door sheet metal. The present utility model improves the quarter window assembly, improves the sealing performance of the quarter window glass, and meanwhile achieves the effect that a product is free of frames and zero step difference.