Vehicle Door Window Seal Component Segmentation
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Solution Overview
Problem
Existing seal components for vehicle door windows often crack the fixed glass during the molding process due to injection pressure, as they are formed separately and cannot be readily coupled to the glass without causing damage.
Innovation Solution
A seal component comprising a division bar, flexible first and second seals, and a coupling member, where the first seal is molded integrally with the division bar and the second seal is coupled to the first seal, allowing the fixed glass to be easily attached without direct molding, using flexible materials like thermoplastic elastomer or rubber to ensure secure sealing without cracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the glass seal is molded integrally with the quarter glass using injection molding, then the seal component can be formed separately from the fixed glass, but the injection pressure may crack the fixed glass
Solution Approach 1:
The seal component is divided into multiple segments: the first seal (molded integrally with division bar) and the second seal (coupled to the first seal), allowing separate formation and assembly rather than requiring integral molding with the fixed glass
Solution Approach 2:
The first seal acts as an intermediary element between the division bar and the fixed glass, providing a flexible coupling that eliminates direct contact between injection pressure and the fixed glass
2Ease of manufacture
If the glass seal is formed separately from the quarter glass, then the sealing function can be provided, but the seal component cannot be readily coupled to the periphery of the quarter glass
Solution Approach 1:
The seal component is segmented into the first seal (integrated with division bar) and second seal (coupled to first seal), where each segment has specific coupling features that facilitate easy assembly to the fixed glass periphery
Solution Approach 2:
The first seal is pre-formed with coupling features that enable the second seal to be readily coupled to the fixed glass periphery, preparing the assembly in advance for easy installation
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 allows for the separate formation and coupling of the seal components to the fixed glass, preventing cracking and enhancing the aesthetic appeal and noise reduction by ensuring smooth surfaces, while reducing manufacturing costs and complexity.
Implementation Method 1
a first seal (20) which is molded integrally with the division bar (11) and seals both a vertical side portion (81, 91) of the movable glass (80) and a vertical side portion (91) of the fixed glass (90)
Implementation Method 2
a second seal (30) which is coupled to an upper end of the first seal (20) and seals a portion of a periphery of the fixed glass (90) excluding the vertical side portion
Data Source
AI summary
A seal component includes a division bar arranged between the movable glass and the fixed glass, a flexible first seal molded integrally with the division bar and sealing both a vertical side portion of the movable glass and a vertical side portion of the fixed glass, a flexible second seal coupled to an upper end of the first seal and sealing a portion of a periphery of the fixed glass excluding the vertical side portion, and a coupling member that couples a lower side portion of the second seal to the first seal. The first seal includes a first groove into which the vertical side portion of the fixed glass is fitted thereby sealing the vertical side portion, and the second seal includes a second groove into which the portion of the periphery of the fixed glass excluding the vertical side portion is fitted thereby sealing the fitted portion.