Inner Weatherstrip Positioning Structure for Door Flange Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing technology for attaching a glass inner weatherstrip to an automobile door lacks a positioning structure, making it difficult to accurately position the weatherstrip, leading to variations in the gap between the weatherstrip and the die molding connection portion.
Innovation Solution
A structure featuring a flange with a protrusion portion and a positioning surface on the inner weatherstrip, allowing for easy positioning by contacting the protrusion surface with a recessed area on the door panel, which can be formed by cutting and raising the flange or panel, ensuring accurate alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If no positioning structure is provided for the inner weatherstrip, then the attachment process is simpler, but the attachment position accuracy deteriorates and varies between products
Solution Approach 1:
The inner weatherstrip performs self-positioning through its own elastic deformation. When the flange is inserted between the sidewall portions, the elastic body deforms to automatically align with the flange position, eliminating the need for external positioning structures while ensuring accurate attachment position
Solution Approach 2:
The patent utilizes the elastic properties of the inner weatherstrip material to enable positioning. The elastic body's ability to deform and recover allows it to adapt to the flange position and maintain consistent attachment across different products without requiring additional positioning components
2Ease of operation
If manual fine adjustment is required for positioning, then flexibility is improved, but the operation complexity and time increase
Solution Approach 1:
The elastic body automatically positions itself through elastic deformation when the flange is inserted, eliminating the need for manual fine adjustment operations. The self-positioning mechanism reduces both operation complexity and positioning time while ensuring consistent attachment position
Solution Approach 2:
The inner weatherstrip is pre-formed with elastic properties that enable automatic positioning during attachment. The elastic deformation occurs naturally during the insertion process, performing the positioning action beforehand without requiring separate adjustment steps
Data Source
AI summary
An inner weatherstrip is attached to a flange formed on an upper edge of a door panel. The flange is formed with a protrusion portion protruding toward a vehicle inside by cutting and raising a part of the flange to protrude toward a vehicle inside and having a contact surface. On the other hand, a vehicle inside sidewall portion of the inner weatherstrip is formed with a positioning surface by recessing a part facing the protrusion portion toward the vehicle inside. When the inner weatherstrip is attached to the flange, the positioning surface is in contact with the contact surface.