Conductive Foam With Central Adhesive Layer For Assembly Stability
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Solution Overview
Problem
Conductive foams designed for mobile terminals often misalign and fall during assembly, prolonging the assembly process.
Innovation Solution
A conductive foam comprising a foam body, a conductive cloth, and a conductive adhesive layer, where the conductive adhesive layer is centrally disposed on the device contact surface with an area less than the contact surface, and doped with metal conductive particles, ensuring secure attachment and preventing displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conductive foam is assembled to mobile terminal device without adhesive layer, then manufacturing process is simple, but conductive foam misaligns and falls during assembly
Solution Approach 1:
The conductive adhesive layer is pre-applied to the device contact surface of the conductive foam before assembly. This preliminary action ensures that when the foam is placed on the mobile terminal device, it immediately adheres securely without misalignment or falling, thus improving assembly stability while maintaining manufacturing simplicity.
2Reliability
If conductive adhesive layer covers entire device contact surface, then attachment security is improved, but conductivity performance deteriorates
Solution Approach 1:
The conductive adhesive layer is designed with non-uniform distribution: it is present at the edges and perimeter of the device contact surface to ensure secure attachment, while the central region remains free of adhesive to maintain optimal conductivity performance. This local differentiation allows the foam to achieve both secure attachment and high conductivity simultaneously.
3Reliability
If conductive foam is designed for secure attachment, then assembly time increases, but misalignment and falling are prevented
Solution Approach 1:
The conductive adhesive layer is pre-applied to the conductive foam during manufacturing, creating a ready-to-attach component. During assembly, the foam simply needs to be placed on the device surface, where it automatically adheres through the pre-applied adhesive. This eliminates the need for separate adhesive application steps during assembly, thus preventing misalignment and falling while maintaining fast assembly time.
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
The solution prevents misalignment and falling of the conductive foam during assembly, thereby reducing assembly time and improving efficiency.
Implementation Method 1
a conductive adhesive layer, wherein the conductive adhesive layer is disposed on the device contact surface
Implementation Method 2
the conductive adhesive layer is doped with a plurality of metal conductive particles, and the metal conductive particles comprise one or more of gold, silver, copper, aluminum, zinc, iron, and nickel
Data Source
AI summary
A conductive foam includes a foam body, a conductive cloth, and a conductive adhesive layer. The conductive cloth wraps an outer surface of the foam body and includes a device contact surface configured to contact an external device for assembly. The conductive adhesive layer is disposed on the device contact surface.