Adhesive Sheet Notch Layout for Damage-Free Battery Detachment
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Solution Overview
Problem
Existing electronic devices face challenges in safely detaching components like battery packs without causing deformation or damage, particularly when adhesive sheets become entangled at curved portions during removal.
Innovation Solution
An electronic device design featuring an adhesive sheet with extending portions, curved connections, and notched sections allows for controlled peeling by concentrating stress at specific points, preventing entanglement and damage during detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the adhesive sheet is formed into a band shape with constant width and disposed to extend along the profile of the electronic component, then the adhesive sheet can be easily manufactured and applied, but the adhesive sheet may become entangled at curved portions during removal, causing damage or incomplete detachment
Solution Approach 1:
The adhesive sheet is divided into multiple sections with different width characteristics: a first section with constant width, a second section with gradually decreasing width, and a third section with constant width. This segmentation allows the adhesive sheet to be easily manufactured while preventing entanglement at curved portions during removal, as the tapered second section reduces stress concentration and prevents the sheet from catching on corners.
Solution Approach 2:
Different portions of the adhesive sheet are given different width characteristics to suit their specific functions. The first and third sections have constant width for secure attachment, while the second section has gradually decreasing width to facilitate clean removal without entanglement. This local differentiation resolves the contradiction between ease of manufacture and reliability during detachment.
2Ease of operation
If the adhesive sheet is pulled using the tab, then the electronic component can be detached, but stress is applied to the portion near the tab which may deform the battery pack and prevent reuse
Solution Approach 1:
The adhesive sheet is segmented into sections with different width characteristics, where the second section has gradually decreasing width. This segmentation distributes the stress during detachment across a larger area, preventing stress concentration at the tab portion and avoiding deformation of the battery pack while maintaining ease of operation.
Solution Approach 2:
The width parameter of the adhesive sheet is changed gradually in the second section, transitioning from constant width to gradually decreasing width. This parameter change allows for controlled stress distribution during removal, enabling easy detachment without applying excessive stress to the battery pack portion near the tab.
3Ease of manufacture
If the adhesive sheet has constant width throughout, then the manufacturing is simple, but the adhesive sheet may become entangled at curved portions causing the electronic component to be damaged or not detached
Solution Approach 1:
The adhesive sheet is segmented into three sections: a first section with constant width, a second section with gradually decreasing width, and a third section with constant width. This segmentation maintains relative manufacturing simplicity while significantly improving ease of detachment by preventing entanglement at curved portions through the tapered second section.
Solution Approach 2:
The adhesive sheet has different width characteristics in different local regions: constant width in the first and third sections for manufacturing simplicity, and gradually decreasing width in the second section for ease of detachment. This local quality differentiation resolves the contradiction between ease of manufacture and ease of detachment.
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
Enables easy and damage-free detachment of electronic components by concentrating stress at notched areas, preventing adhesive sheet entanglement and ensuring smooth removal without damaging the component or the device.
Implementation Method 1
the adhesive sheet has a notched portion provided on a side of the one of the two extending portions closer to the curved portion and on one side in a width direction of the adhesive sheet
Data Source
AI summary
An electronic devices includes: an electronic component; a cabinet provided facing the electronic component, an adhesive sheet including two extending portions extending along two adjacent sides of the electronic component and a curved portion connecting the two extending portions, and being provided between the electronic component and the cabinet; and a tab provided in one of the two extending portions, and configured to enable the adhesive sheet to be pulled. The adhesive sheet has a notched portion provided on a side of the one of the extending portions closer to the curved portion and one side in a width direction of the adhesive sheet.