Magnetic Kickstand for Foldable Devices
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Solution Overview
Problem
Foldable computing devices often require users to prop them at an angle using external objects, which can be inconvenient and unstable, as they lack a reliable mechanism for automatic deployment of a kickstand.
Innovation Solution
A kickstand assembly for foldable computing devices that includes a backplate with a deploy magnet and a lower kickstand plate with a closing magnet, which automatically deploys when the upper kickstand plate is laterally translated, using magnetic repulsion to rotate the lower kickstand plate into a stable position aligned with the device's center of gravity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a kickstand assembly with magnetic deployment mechanism is implemented, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The kickstand plate automatically deploys and positions itself through magnetic interaction between the deploy magnet and the kickstand plate, eliminating the need for manual intervention or complex mechanical actuation mechanisms. The magnetic field provides self-guided deployment and positioning.
Solution Approach 2:
Traditional mechanical deployment mechanisms (springs, latches, linkages) are replaced with a magnetic deployment system. The deploy magnet creates magnetic attraction/repulsion forces to move the kickstand plate into its deployed position, simplifying the mechanical structure while improving ease of operation.
2Ease of operation
If the lower kickstand plate is rotatably coupled to enable automatic deployment, then ease of operation is improved, but reliability may worsen due to additional moving parts
Solution Approach 1:
The rotatable coupling enables the kickstand plate to automatically deploy and lock into position through magnetic attraction between the deploy magnet and the plate. The system self-regulates its deployment without requiring external actuation or complex control mechanisms.
Solution Approach 2:
The magnetic field parameters (strength, polarity) are optimized to provide sufficient attraction force for reliable deployment while maintaining controlled rotation. The magnetic interaction parameters are tuned to ensure consistent positioning and reliable engagement of the kickstand plate.
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 stable deployment of the kickstand, allowing users to position the device at a convenient angle without external support, enhancing usability and stability.
Implementation Method 1
a backplate deploy magnet in the backplate to repel an opening magnet in the lower kickstand plate and cause the lower kickstand plate to rotate about a connection with the upper kickstand plate
Implementation Method 2
a closing magnet having a second magnetic pole orientation that attracts the first magnetic pole orientation of the backplate deploy magnet
Data Source
AI summary
A kickstand assembly comprises a backplate including a backplate deploy magnet having a first magnetic pole orientation. An upper kickstand plate is slidably connected to the backplate, and a lower kickstand plate is rotatably coupled to the upper kickstand plate. The lower kickstand plate includes a closing magnet having a second magnetic pole orientation that attracts the backplate deploy magnet, and an opening magnet laterally spaced from the closing magnet and having the first magnetic pole orientation that repels the backplate deploy magnet to cause the lower kickstand plate to rotate about the upper kickstand plate when the upper kickstand plate is laterally translated relative to the backplate.