Integrated Outer Belt Door Sealing for Vehicle Airtightness
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Solution Overview
Problem
Existing vehicle door designs face challenges in achieving required airtightness performance due to the separate assembly of outer belt moldings and external panels, which can lead to manufacturing and assembly distribution issues.
Innovation Solution
The integration of an outer belt into the upper end portion of the external panel, utilizing a coupling block portion and a hidden lip that seals between the external panel and the door glass, addresses the airtightness and design aesthetics issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the outer belt molding is assembled separately to the external panel, then the manufacturing and assembly process is simpler, but the airtightness performance deteriorates due to manufacturing and assembly distribution
Solution Approach 1:
The patent integrates the outer belt molding and external panel into a single integrated door assembly. The coupling block is formed as part of the external panel structure, and the hidden lip is integrated with the outer belt molding, creating a unified assembly that eliminates separate manufacturing and assembly steps while ensuring consistent airtightness performance without distribution issues
2Shape
If the exposure portion height is reduced to minimize the outer belt molding, then the design aesthetics improve, but the sealing performance deteriorates
Solution Approach 1:
The patent transitions from a traditional exposed outer belt molding to a hidden lip structure that is integrated into the coupling block. The sealing function is moved to a different dimensional arrangement where the hidden lip engages with the coupling block internally, allowing the exposure portion height to be minimized while maintaining sealing performance through the integrated coupling mechanism
3Shape
If the outer belt molding is made smaller, then the minimalist design trend is achieved, but the number of components and assembly complexity increases
Solution Approach 1:
The patent merges the outer belt molding with the external panel through the coupling block structure. The coupling block is formed as an integral part of the external panel, and the hidden lip is integrated with the outer belt molding, reducing the number of separate components while achieving minimalist design aesthetics
Data Source
AI summary
An outer belt integrated door for a vehicle including an external panel, an internal panel fastened to an internal surface of the external panel, and a door glass provided between the external panel and the internal panel includes a coupling block portion provided on an upper internal surface of the external panel and a hidden lip coupled to the coupling block portion and configured to seal between the external panel and the door glass.