Continuous Thick Tape Pad for Automotive Exterior Components
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Automotive exterior components, such as door cladding and wheel-flares, face issues with sink marks on Class A surfaces due to inadequate adhesion from intermittent thin tape ribs, leading to potential detachment during vehicle use.
Innovation Solution
Incorporating a continuous thick tape pad along the length of exterior components for enhanced adhesive bonding, combined with mechanical attachment using clips, to ensure secure attachment and prevent sink marks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If intermittent thin tape ribs are used for attachment, then the component structure is simpler, but the adhesive bonding strength is insufficient leading to component detachment
Solution Approach 1:
The patent changes the parameters of the attachment structure by transitioning from thin, intermittent ribs to a thick, continuous tape pad. This parameter change increases the surface area and continuity of the adhesive bonding interface, thereby significantly improving adhesive bonding strength and preventing component detachment during vehicle use.
Solution Approach 2:
The patent creates a composite structure by integrating the thick tape pad as an inherent feature within the molded component body. This composite design combines the structural integrity of the molded part with the enhanced adhesive properties of the thick continuous pad, achieving both structural simplicity and superior bonding strength.
2Strength
If thick continuous tape pad is used for attachment, then the adhesive bonding strength is significantly increased, but the manufacturing complexity increases
Solution Approach 1:
The patent merges the attachment feature (thick continuous tape pad) directly into the molded component body during the same manufacturing process. This integration eliminates the need for separate attachment of adhesive ribs or pads, thereby reducing assembly steps and overall manufacturing complexity despite the enhanced pad design.
Solution Approach 2:
The molded component automatically provides its own attachment structure through the integrated thick continuous tape pad. The manufacturing process self-generates the enhanced bonding feature without requiring external intervention or additional components, simplifying the overall manufacturing system.
3Manufacturing precision
If intermittent thin tape ribs are used, then the manufacturing process is simpler, but sink marks appear on the Class A surface decreasing aesthetic quality
Solution Approach 1:
The patent changes the dimensional parameters of the attachment structure from thin ribs to a thick continuous tape pad. This parameter change distributes the molding stress more evenly and eliminates the localized pressure points that cause sink marks, thereby improving the aesthetic finish quality of the Class A surface.
Solution Approach 2:
Instead of adding attachment features that protrude into the molding cavity (which causes sink marks), the patent inverts the approach by designing the thick continuous tape pad to integrate seamlessly with the component body geometry, eliminating the harmful protrusions while maintaining attachment functionality.
4Area of stationary object
If intermittent thin tape ribs are used, then the component structure is simpler, but the surface area for adhesion is very limited
Solution Approach 1:
The patent changes the geometric parameters of the attachment structure by transitioning from thin, spaced-apart ribs to a thick, continuous tape pad that spans the entire attachment length. This parameter change dramatically increases the adhesive surface area, providing ample bonding area to prevent component detachment.
Solution Approach 2:
The patent implements a continuous tape pad structure that provides uninterrupted adhesive bonding along the entire length of the component. This continuity eliminates the gaps and weak points present in intermittent rib designs, ensuring consistent adhesion and maximizing the effective bonding surface area.
Data Source
AI summary
An exterior component is disclosed for attachment to a vehicle surface of an external vehicle structure. The exterior component comprises a primary body having a pad support wall and a profile wall extending therefrom, the profile wall defining an exterior profile of the exterior component, and presenting an exterior surface having a desired aesthetic finish. The pad support wall is an elongate continuous structure that runs substantially the entire length of the exterior component. The pad support wall presents a continuous tape pad configured to receive a suitable adhesive for bonding the exterior component to a receiving vehicle surface. The exterior component is exemplified in the form of a door cladding, and a wheel-flare molding.