Outer Waist Seal Assembly Retention Mechanism
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Solution Overview
Problem
Conventional outer waist seals (OWS) for vehicles are prone to loosening and failure due to lateral forces from vehicle motion and UV heating, making them difficult to install by hand and requiring additional force, which can damage the seal and surrounding components.
Innovation Solution
The improved OWS features an elongate body structure with longitudinal friction structures, lips, rails, or channels that engage clip structures in transverse slots or holes on the sheet metal, preventing rotation and securing the seal in place, even under lateral forces, allowing for easy hand installation and maintaining stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional OWS uses hook structure to engage step structure, then the seal can be installed, but it loosens and fails due to lateral forces from vehicle motion and UV heating
Solution Approach 1:
The retention structure is divided into multiple discrete clips distributed along the elongate body structure. Each clip independently engages with the sheet metal, distributing the lateral forces across multiple attachment points rather than concentrating them at a single hook, thereby preventing rotation and loosening under thermal and mechanical stress
Solution Approach 2:
The retention mechanism transitions from a single-point hook engagement to a distributed multi-point clip system. This dimensional distribution along the length of the seal creates a stable array of attachment points that resist lateral forces and prevent rotational movement about any single pivot point
2Force
If installer uses hammer or mallet to install OWS, then installation force is sufficient, but the seal and surrounding components are damaged
Solution Approach 1:
The clips are designed with resilient or flexible properties that allow them to dynamically deform during installation. This elasticity absorbs installation forces and allows the clips to flex into position without requiring excessive force, while still providing rigid retention once installed
Solution Approach 2:
The material properties of the clips are selected to provide optimal balance between installation flexibility and retention strength. The clips can be made from elastomeric materials or metals with controlled yield characteristics, allowing them to deform elastically during hand installation and then maintain rigid engagement under operational loads
3Stability of the object's composition
If OWS is secured with multiple clips in transverse slots, then rotation is prevented and seal remains stable, but device complexity increases
Solution Approach 1:
Each clip serves multiple functions: it provides lateral retention, prevents rotation, and can be independently installed or replaced. The standardized clip design with hook structure and resilient properties makes it a universal component that combines the functions of a fastener, a shock absorber, and a positioning element
Solution Approach 2:
The clips act as intermediary elements between the elongate body structure and the sheet metal. Rather than directly attaching the seal to the metal, the clips provide a compliant intermediate connection that accommodates tolerance variations and simplifies the overall assembly process
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 enables the OWS to be securely installed and remain in place despite tolerance variations and lateral forces, ensuring a finished exterior appearance and easy assembly, while reducing the risk of damage during installation.
Implementation Method 1
one or more resilient flanges one of coupled to and integrally formed with one or more of the interior arm of the elongate body structure, the exterior arm of the elongate body structure, and the elongate sealing structure
Implementation Method 2
the interior arm includes one or more longitudinal friction structures, lips, rails, and/or channels
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
An outer waist seal assembly (110) for a vehicle including an exterior body panel (118), including: an elongate body structure (112) adapted to be disposed about an edge of the exterior body panel (118) and including an interior arm (112a) adapted to be disposed on an interior side of the exterior body panel (118) and an exterior arm (112b) adapted to be disposed on an exterior side of the exterior body panel (118), the interior arm (112a) including a friction structure, lip, rail, channel, and/or hole (150) disposed on or through an interior surface thereof; and a clip structure (152) adapted to be secured in a slot or hole (154) defined adjacent to the edge of the exterior body panel (118) and engage the friction structure, lip, rail, channel, and/or hole (150) disposed on or through the interior surface of the interior arm (112a) of the elongate body structure (112), thereby securing the elongate body structure (112) to the exterior body panel (118).