Vehicle Exterior Garnish Ridge Structure for Tape Release Sheet Integrity
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Solution Overview
Problem
Existing vehicle exterior components with curved protruded ridges apply unnatural force to the release sheet of double-faced adhesive tape, leading to premature peeling and deterioration of adhesive performance when attached to vehicle body panels.
Innovation Solution
The protruded ridges on the vehicle exterior component are designed with varying inner and outer side heights, featuring a wave shape on the inner side to equalize length differences, preventing the release sheet from peeling off and maintaining adhesive integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the protruded ridges are curved with a relatively small radius of curvature, then the exterior component achieves a more aesthetic curved shape, but unnatural force is applied to the release sheet causing it to peel off and adhesive performance deteriorates
Solution Approach 1:
The patent applies local quality by making the distal end surface of the inner-side protruded ridge have a wave shape specifically in the curved region, while other regions maintain flat or different surface characteristics. This localized surface modification equalizes the effective length of distal end surfaces across different ridges, preventing unnatural force concentration on the release sheet in curved regions while maintaining the desired curved aesthetic shape.
2Reliability
If the protruded ridges extend in straight lines or gentle curves, then the release sheet remains intact during adhesive attachment, but the exterior component lacks aesthetic curved design
Solution Approach 1:
The wave-shaped distal end surface is applied locally to inner-side protruded ridges in curved regions, creating a length equalization effect that maintains release sheet integrity while allowing the overall component to achieve aesthetic curved designs. This localized modification enables both curved aesthetics and reliable adhesive attachment.
3Manufacturing precision
If the distal end surfaces of all protruded ridges are made flat and equal length, then adhesive attachment is uniform, but curved regions create compressive force on the release sheet causing peeling
Solution Approach 1:
Instead of making all distal end surfaces flat and equal length (conventional approach), the patent inverts the approach by giving the inner-side protruded ridge in curved regions a wave-shaped distal end surface. This inversion creates additional effective length in regions that would otherwise be shorter, equalizing the adhesive attachment surface across all ridges and eliminating compressive force on the release sheet.
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
This design ensures the release sheet remains intact, preserving the adhesive performance of the double-faced tape, ensuring secure attachment of the exterior component to the vehicle body panel.
Implementation Method 1
in the region having curved configuration, height of the protruded ridge on an inner side varies such that the distal end surface of the protruded ridge on the inner side has a wave shape
Implementation Method 2
a first adhesive surface of a shared double-faced adhesive tape is adhesively attached to distal end surfaces of the plurality of protruded ridges
Data Source
AI summary
A garnish 10 (exterior component) includes a body 11 having a plate configuration and a plurality of protruded ridges 15, 16 protruded from a back side of the body and extending with a generally constant distance from each other. The garnish 10 is adhesively attached to a vehicle body panel 20 via a shared double-faced adhesive tape 40 adhered to distal end surfaces of the plurality of protruded ridges 15, 16. The plurality of protruded ridges 15, 16 respectively include regions R having curved configurations. Height of the protruded ridge 16 on an inner side varies such that the distal end surface thereof has a wave shape in the region having the curved configuration. Thereby, when a first adhesive surface of the double-faced adhesive tape 40 is adhesively attached to the distal end surfaces of the protruded ridges 15, 16, the release sheet 41 covering a second adhesive surface of the double-faced adhesive tape 40 can be prevented from being subjected to unnatural force and being peeled off the second adhesive surface.