Vehicle Close-out Assembly Seal Segmentation
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Solution Overview
Problem
Existing vehicle external ports lack effective sealing mechanisms to prevent debris, dust, and condensation from entering when not in use, particularly when the door is closed, which can compromise the integrity and aesthetic appearance of the vehicle's design.
Innovation Solution
A close-out assembly for an external port of a vehicle, comprising a housing with a seal formed to both the outer and inner edges of the wall, where the seal includes a first and second sealing portion, and an intermediate portion connecting them, ensuring the door engages the seal when closed and the inlet is sealed regardless of the door's position, manufactured using elastomeric material via molding processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a simple door closure mechanism is used, then the device complexity is reduced, but the sealing effectiveness deteriorates allowing debris and condensation to enter
Solution Approach 1:
The seal is divided into multiple functional portions: a first sealing portion at the outer edge engaging the door, a second sealing portion at the inner edge engaging the inlet, and an intermediate portion connecting them. This segmentation allows each portion to perform its specific sealing function independently, ensuring comprehensive sealing effectiveness while maintaining a manageable structural complexity.
Solution Approach 2:
Different portions of the seal are positioned at different locations with different engagement functions. The first sealing portion is located at the outer edge to seal against the door, while the second sealing portion is at the inner edge to seal against the inlet. This local differentiation ensures that each area is sealed according to its specific requirements, improving overall sealing effectiveness without unnecessarily complicating the entire seal structure.
2Reliability
If the seal only engages the door when closed, then the device complexity is reduced, but the inlet remains exposed to debris when the door is open
Solution Approach 1:
The seal is segmented into a first sealing portion that engages the door and a second sealing portion that engages the inlet. This segmentation ensures that the inlet is protected by the second sealing portion regardless of door position, while the first sealing portion provides additional protection when the door is closed. The segmentation allows independent functioning of each sealing portion, achieving comprehensive protection without excessive complexity.
Solution Approach 2:
The intermediate portion of the seal acts as a mediator connecting the first sealing portion (door engagement) and the second sealing portion (inlet engagement). This intermediate structure allows the seal to maintain continuous engagement with both the door and inlet, ensuring the inlet remains protected even when the door is open, while still providing door-closed sealing capability.
3Reliability
If a dual sealing system is implemented, then the sealing reliability is improved, but the manufacturing complexity increases
Solution Approach 1:
The first sealing portion, second sealing portion, and intermediate portion are merged into a single integrated seal component formed by one molding process. This merging allows the complex dual-sealing functionality to be achieved without proportionally increasing manufacturing complexity, as the entire multi-portion seal is produced as a single piece rather than assembling multiple separate components.
Solution Approach 2:
The single seal component performs multiple sealing functions simultaneously: sealing against the door when closed, sealing around the inlet regardless of door position, and providing structural support. This multi-functionality is achieved within a single manufactured component, improving sealing reliability without requiring separate manufactured parts for each function, thus limiting the increase in manufacturing complexity.
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 effectively prevents ingress of particles and condensation into the external port, maintaining the vehicle's integrity and aesthetic appearance by ensuring a continuous seal around the outer and inner edges, even when the door is closed, thus acting as a dust inhibitor and maintaining the vehicle's appearance.
Implementation Method 1
molding an elastomeric material to the housing using the mold to form a seal to the outer edge of the wall and to the inner edge of the wall
Data Source
AI summary
A close-out assembly includes a housing and an inlet. The housing includes a wall that surrounds an opening. The wall includes an outer edge adjacent to the face plate and an inner edge. The inlet is coupled to the wall, and the inlet is accessible through the opening. The assembly includes a door coupled to the housing that is movable relative to the housing. The assembly includes a seal formed to the wall at the outer edge of the wall and the inner edge of the wall. The door engages one part of the seal when the door is in a closed position, and the inlet engages another part of the seal regardless of the position of the door. A method of manufacturing the assembly includes positioning a housing relative to a mold, and molding an elastomeric material to the housing using the mold to form a seal.