Stepped Glue Tab Structure for Uniform Paintless Dent Lifting
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Solution Overview
Problem
Existing dent removal tools fail to evenly disperse pulling force, often resulting in uneven dent removal with volcano-shaped defects, requiring rework.
Innovation Solution
A glue tab with a layered design featuring a flat bottom surface and a stepped-up portion that flexes to uniformly distribute pulling force, preventing uneven dent removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If existing dent removal tools are used, then dent removal can be achieved, but the pulling force is not evenly dispersed resulting in volcano-shaped defects
Solution Approach 1:
The glue tab is divided into multiple functional segments: an affixment portion for adhering to the dent, a stepped up portion that acts as a force-distributing interface, and a head portion for tool engagement. This segmentation allows each part to perform its specific function optimally, with the stepped up portion specifically designed to disperse pulling forces evenly across the dent surface.
Solution Approach 2:
The stepped up portion introduces a vertical dimension to the force distribution mechanism. By creating a stepped configuration where the affixment portion and head portion are at different vertical levels, the design enables more uniform stress distribution across the dent surface during the pulling process, preventing concentration of force at single points.
2Productivity
If existing tools pull out dents, then outer edges may be removed but middle depression remains requiring rework
Solution Approach 1:
The stepped up portion is pre-configured with an geometry that anticipates and prevents the volcano-shaped defect formation. By designing the interface between the affixment portion and head portion with this stepped structure, the force distribution is optimized before the pulling action begins, ensuring uniform elevation of the entire dent surface including the middle area.
3Ease of manufacture
If a single polymer piece is used for the glue tab, then manufacturing is simplified, but structural complexity for force distribution must be integrated
Solution Approach 1:
Multiple functional elements (affixment portion, stepped up portion, head portion) are merged into a single integrated polymer component. This consolidation simplifies manufacturing by eliminating assembly steps while maintaining the complex stepped geometry necessary for force distribution. The single-piece construction ensures structural integrity and proper force transmission through the integrated design.
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
Ensures uniform dent lifting without volcano-shaped defects, reducing the need for rework and material waste.
Implementation Method 1
The flat bottom surface is configured to be affixed to a dent in a vehicle body
Data Source
AI summary
A glue tab for paintless dent repair. The glue tab has a head portion and a dent lifting portion. The glue tab further includes a stem extending between the head and dent lifting portions. The dent lifting portion has an affixment portion with a flat bottom surface. The bottom surface is configured to be affixed to a dent in a vehicle body. The bottom surface further includes a first perimeter extending along an outer edge. A stepped up portion sits between the stem and the affixment portion. The stepped up portion has a second perimeter that substantially follows the first perimeter. The first perimeter is narrower than the second perimeter.