Magnetic Keyboard Key Retention for Silent Actuation

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Solution Overview

Problem

Conventional keyboards produce noise due to the actuation and release of keys, primarily caused by the interaction between the key cap and the key well.

Innovation Solution

The keyboard employs magnetic keyboard keys with a keyboard key cap and key well magnet arrangement, which reduces or eliminates noise by slidably holding the key cap to the key well through magnetic interaction, and optionally uses a lubricant to further reduce friction and noise.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If conventional mechanical key actuation is used, then key responsiveness is achieved, but clacking noise is generated

Engineering Contradiction:

Improveclacking noiseVSAvoidkey actuation smoothness

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The patent replaces the traditional mechanical retention system (hooks, clips, or friction fits) with a magnetic field-based retention system. Magnets embedded in the key cap and key well create magnetic attraction forces that hold the key in place, eliminating mechanical contact and friction that cause clacking noise during key actuation and release.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the physical state of the retention mechanism from mechanical (solid contact) to magnetic (field-based attraction). By using magnetic field strength as the retention parameter instead of mechanical friction or physical interlocking, the system achieves silent operation while maintaining key responsiveness and alignment.

Inventive Principle:

Principle #35Parameter changes

2Object-affected harmful factors

If mechanical retention methods are used, then key alignment is maintained, but friction and noise increase

Engineering Contradiction:

ImprovefrictionVSAvoidkey alignment

Core Design Contradiction:

Object-affected harmful factorsVSStability of the object's composition

Solution Approach 1:

The magnetic retention system replaces mechanical friction-based retention with field-based attraction. The magnetic force acts uniformly on the key cap, maintaining stable alignment in the key well without the sliding friction that occurs in mechanical systems. This eliminates wear and noise while preserving precise key positioning.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 solution effectively reduces or eliminates the clacking noise associated with key actuation and release, providing a quieter typing experience while maintaining proper alignment and reduced friction for easier key actuation.

Implementation Method 1

A magnet is formed on an interior surface of the keyboard key well and a magnet is formed on an exterior surface of the lower extension

Methodology Applied

Scientific EffectMagnetic interaction: Magnetism

Data Source

PatentUS20250138647A1System and method for a quiet magnetic keyboard key

Publication Date: 2025.05.01 DELL PROD LP

AI summary

A keyboard operatively couplable to an information handling system includes a keyboard top cover including at least one keyboard key well formed therein, a keyboard key cap having a keyboard key cap lower extension to fit within the keyboard key well, and a keyboard key well magnet formed on an interior vertical surface inside the keyboard key well. The keyboard further includes a keyboard key cap magnet formed on and outer surface of the keyboard key cap lower extension of the sliding surface of the keyboard key cap aligned in parallel vertically with the keyboard key well magnet, wherein magnetic interaction between the keyboard key cap magnet and the keyboard key cap magnet slidably holds the keyboard key cap to the keyboard key well.