Door Panel Adhesive Retention via Curved Inner Surface
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional door panels with flat adhering surfaces experience reduced adhesive strength, especially around openings, which is exacerbated in high-heat applications where the adhesive can thin out and lose integrity.
Innovation Solution
The door panel design incorporates an inner panel with vertically extending adhering portions and adhesive retaining channels that form a continuously extended raised portion, allowing the adhesive to be retained and maintaining strength even around ventilation openings, with an arc-shaped cross section that ensures the adhesive remains solidified within the channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If flat adhering surfaces are used for bonding the inner panel to the outer panel, then the manufacturing process is simple, but the adhesive strength is reduced especially around openings
Solution Approach 1:
The patent applies curvature by forming the adhering surface of the inner panel with convex and concave curved portions instead of flat surfaces. The convex portions protrude toward the outer panel while concave portions recess, creating a curved topography that prevents adhesive flattening and maintains adhesive strength, especially around openings where heat exposure occurs.
Solution Approach 2:
The patent implements local quality by creating different surface characteristics in different regions of the adhering surface. Specific convex and concave portions are strategically positioned, particularly around opening regions, to provide enhanced adhesive retention locally where heat exposure and adhesive degradation are most problematic.
2Adaptability or versatility
If openings are provided in the door panel for high-heat tolerance, then ventilation and heat dissipation are improved, but the adhering surface area is reduced and adhesive strength deteriorates
Solution Approach 1:
Around the openings, the inner panel is formed with convex and concave curved portions that create a three-dimensional adhering surface. This curvature prevents the adhesive from flattening completely even with reduced adhering surface area, maintaining adhesive strength in the heat-exposed regions surrounding the openings.
Solution Approach 2:
The patent applies local quality by concentrating convex and concave surface features specifically in the regions around openings where heat exposure occurs. This localized surface modification ensures that adhesive strength is maintained precisely where it is most needed for heat tolerance without compromising the overall door panel structure.
3Ease of manufacture
If the adhesive is applied on flat surfaces, then the application process is simple, but the adhesive becomes completely flattened in some areas resulting in reduction of adhering strength
Solution Approach 1:
The inner panel's adhering surface is formed with convex and concave curved portions that create a non-flat topography. When adhesive is applied to this curved surface, it cannot flatten completely, maintaining its bonding capability and adhering strength even after the bonding 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
This configuration maintains the adhering strength of the adhesive, prevents reduction in strength around openings, and enhances the overall structural integrity of the door panel, particularly in high-heat conditions.
Implementation Method 1
the adhesive retaining portion has an adhesive retaining channel for retaining the adhesive
Data Source
AI summary
A door panel that is capable of maintaining the adhering strength of the adhesive is provided. An outer panel and an inner panel are joined together by an adhesive. Adhesive retaining portions, each of which includes an adhesive retaining channel for retaining the adhesive, are provided in adhering portions of the inner panel. Each adhering portion includes vertically extending portions, and the adhesive retaining portions of the inner panel are formed in the shape of an extended raised portion and extend vertically in the respective vertically extending portions of the adhering portions, along ventilation openings, which are formed at locations corresponding to groups of ventilation holes of the outer panel. Each adhesive retaining portion is provided at the middle of each vertically extending portion of the adhering portions so as to be flanked by adhesion margins of identical width.