Magnetic Keypswitch Cantilever Design for Stronger Attraction
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Solution Overview
Problem
Conventional magnetic keyswitches have weak magnetic attraction forces due to limited accommodating space, leading to insufficient operational feel and high replacement costs for thin films, which are often damaged during removal.
Innovation Solution
A magnetic keyswitch design featuring a base with a hole and a bendable cantilever portion on a metal thin sheet to securely hold and optionally attract the magnetic component, allowing for easy replacement and reuse by bending the cantilever to access the hole.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the accommodating space for the magnetic component is limited due to thin-typed design, then the keyboard maintains a thin profile, but the magnetic attraction force becomes weak and cannot provide sufficient operational feel
Solution Approach 1:
The patent utilizes the vertical dimension by extending the cantilever portion downward from the base to hold the magnetic component. This allows the magnetic component to be positioned in a lower space that would otherwise be unused, effectively increasing the accommodating space without increasing the overall keyboard thickness. The cantilever portion creates a new spatial dimension for component placement below the base plane.
2Device complexity
If the thin film is directly pasted on the base, then the assembly is simple, but the thin film cannot be reused when elements need to be removed and must be replaced at extra cost
Solution Approach 1:
The patent segments the thin film into two functional parts: the main thin film remains attached to the base for protection, while the magnetic component is separately mounted on the cantilever portion. This segmentation allows the magnetic component to be removed and replaced independently without damaging or replacing the thin film, enabling reuse of the thin film while maintaining assembly simplicity.
Solution Approach 2:
The patent enables recovery and reuse of the thin film by designing a system where the magnetic component can be removed without damaging the thin film. The cantilever portion allows the magnetic component to be detached and reattached, while the thin film remains intact on the base for continued use, eliminating the need to discard and replace the thin film.
3Stability of the object's composition
If the magnetic component is securely held on the base, then structural stability is maintained, but the magnetic component cannot be easily removed for replacement
Solution Approach 1:
The patent employs a dynamic holding mechanism where the cantilever portion can be bent to release or secure the magnetic component. When the cantilever is in its natural state, it securely holds the magnetic component for structural stability. When bent by external force, it releases the magnetic component for easy removal and replacement. This dynamic mechanism provides both secure holding and easy replaceability.
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
Enhances magnetic attraction force, structural stability, and assembly strength while reducing rework costs by enabling the reuse of the metal thin sheet, improving operational feel and reducing waste.
Implementation Method 1
The magnetic component is disposed on the base and functioned with the magnet portion to provide a recovering force to the keycap
Implementation Method 2
the metal thin sheet can be optionally made of material with magnetic permeability, so the metal thin sheet can directly attract the magnetic component to effectively increase the magnetic attraction force of the magnetic component
Data Source
AI summary
A magnetic keyboard has a plurality of magnetic keyswitches, and each magnetic keyswitch include a base, a keycap, a supporting device, a magnetic component and a metal thin sheet. The base has at least one engaging structure and a hole. The supporting device has a first support, an end of the first support is movably connected to the engaging structure, and the other end of the first support is movably connected to the keycap. The first support has a magnet portion. The magnetic component is disposed on the base and functioned with the magnet portion to provide a recovering force to the keycap. The metal thin sheet is disposed under the base and has a bendable cantilever portion covering the hole. While the cantilever portion is bent by an external force, the magnetic component can be removed through the hole.