Automobile Door Sealing Structure for Smooth Glass Run Coupling
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Solution Overview
Problem
Existing sealing structures for automobile doors complicate the coupling operation of the glass run to the frame and can spoil the appearance due to unevenness or misalignment, often requiring complex mechanisms and rotatable lips that hinder smooth assembly.
Innovation Solution
A sealing structure with a glass run and door weather strip design that includes an inclined surface on the upper side wall of the glass run, a sub seal with a specific length and thickness, and an inner garnish to stabilize the sub seal, preventing it from colliding with the lip and ensuring a flush contact, thus simplifying the coupling operation and maintaining appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sub seal is made longer to cover potential misalignment, then the sealing reliability is improved, but the sub seal collides with the lip and spoils appearance
Solution Approach 1:
The inclined surface acts as an intermediary between the sub seal and the lip. It allows the sub seal to gradually transition onto the lip surface, preventing direct collision while accommodating length variations. This intermediary surface converts the harmful collision into a controlled sliding motion, maintaining both sealing reliability and appearance.
2Reliability
If the lip is pressed against the inclined plate to secure the glass run, then the coupling reliability is improved, but the lip abuts with the flange and hampers coupling operation
Solution Approach 1:
The inclined surface is designed to guide the lip into its final position before it can abut against the flange. By providing a pre-positioning slope, the system ensures the lip is correctly oriented and seated on the inclined plate prior to full engagement, preventing harmful abutment and facilitating smooth coupling operation.
3Adaptability or versatility
If the sub seal is allowed to move under downward force to accommodate misalignment, then the adaptability is improved, but the sub seal buckles and spoils appearance
Solution Approach 1:
The inclined surface changes the geometric parameters of the contact interface. By providing a sloped surface instead of a vertical one, it allows controlled movement and adjustment of the sub seal position while maintaining a smooth, buckled-free appearance. The angle of the inclined surface is optimized to permit necessary adjustment without causing buckling.
Data Source
AI summary
A length of a sub seal of a door weather strip is sized and dimensioned in a manner that a distance is longer than a length with a glass run coupling to an outer-cabin side of a flange of a frame and the door weather strip coupling to an inner-cabin side of a door with a clip. The distance is between part of a lower part of a top end of the sub seal of the door weather strip in contact with an inclined surface of an upper side wall of the glass run and part of an upper surface of a top end of a lip of the glass run. The length is of a perpendicular line that extends between the sub seal and an inclined plate of the frame passing through the part of the upper surface of the top end of the lip.