Dishwasher-Safe Keyboard With Segmented Barrier Housing

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Solution Overview

Problem

Computer keyboards are prone to bacterial contamination and are difficult to clean effectively, with existing methods being time-consuming and risky, and they lack resistance to abusive environments such as spills.

Innovation Solution

A keyboard design featuring a key silo made of internally lubricated resin, an actuation unit enclosed in a barrier layer, and a sealable compartment for wireless signal transmission and power, allowing for dishwasher-safe cleaning and improved spill resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If keyboards are cleaned by hand using cleaning solutions and cloths, then some cleaning effect is achieved, but the process is time-consuming and risks spilling cleaning solution into the keyboard

Engineering Contradiction:
Improvecleaning easeVSAvoidcleaning time
Core Design Contradiction:
Ease of manufactureVSLoss of time

Solution Approach 1:

The patent describes a keyboard housing with a removable upper assembly that can be easily separated from the base. This disposable-like approach allows the upper assembly to be quickly removed and cleaned separately, reducing cleaning time and effort while eliminating the risk of spilling cleaning solution into the main keyboard electronics.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The keyboard is divided into separable components: a removable upper assembly containing the keys and a base containing the electronics. This segmentation allows the upper assembly to be easily removed for cleaning, making the cleaning process faster and safer while maintaining the integrity of the electronic components.

Inventive Principle:
Principle #1Segmentation

2Object-affected harmful factors

If cleaning solutions are applied to the keyboard surface, then bacteria can be reduced, but cleaning solution can spill into the keyboard and cause damage

Engineering Contradiction:
Improvebacterial contaminationVSAvoidkeyboard durability
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The keyboard housing separates the key surface (upper assembly) from the electronic components (base). This segmentation allows the upper assembly to be removed and cleaned separately with cleaning solutions, preventing spills from reaching the electronics and maintaining keyboard reliability while effectively reducing bacterial contamination on the key surface.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The upper assembly is designed to be easily extracted from the base. This extraction capability allows users to remove the key surface for separate cleaning, eliminating the risk of cleaning solution damage to the electronics while maintaining effective bacterial reduction on the frequently-touched key surfaces.

Inventive Principle:
Principle #2Taking out (Extraction)

3Adaptability or versatility

If wireless keyboards are used to provide flexibility, then user mobility is improved, but the keyboard is exposed to more abusive environments and spill risks

Engineering Contradiction:
Improveuser flexibilityVSAvoidspill exposure
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The wireless keyboard maintains its portable, flexible design while incorporating a separable housing structure. The upper assembly can be removed and cleaned separately, addressing the spill risk associated with wireless keyboard portability. This segmentation allows the keyboard to maintain its adaptive, mobile nature while protecting against the harmful effects of spills in abusive environments.

Inventive Principle:
Principle #1Segmentation

4Ease of operation

If the keyboard housing is made with complex internal structures for key mechanisms, then key functionality is improved, but cleaning becomes more difficult due to cracks and crevices

Engineering Contradiction:
Improvekey functionalityVSAvoidcleaning accessibility
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The keyboard housing divides the complex key mechanisms into a separate removable upper assembly. This segmentation allows the intricate key structures to maintain their full functionality while enabling easy removal for thorough cleaning. The separate upper assembly can be cleaned without disassembling complex internal structures, making cleaning accessible despite the complexity of the key mechanisms.

Inventive Principle:
Principle #1Segmentation

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 design enables easy and thorough cleaning of keyboards in a dishwasher while maintaining functionality and resistance to spills, addressing the issues of bacterial contamination and spill damage.

Implementation Method 1

the key silo comprises an internally lubricated resin

Methodology Applied
Scientific EffectLubrication: Lubrication

Implementation Method 2

The actuation unit is enclosed in a barrier layer

Methodology Applied
Scientific EffectPhysical containment: Physical Containment

Implementation Method 3

the keyboard circuitry may be potted

Methodology Applied
Scientific EffectPotting encapsulation: Physical Containment

Data Source

PatentUS7510342B2Washable keyboard
Publication Date: 2009.03.31 MICROSOFT TECHNOLOGY LICENSING LLC
  • US7510342B2 patent drawing
  • US7510342B2 patent drawing
  • US7510342B2 patent drawing

AI summary

A washable switch that may be used in a keyboard is disclosed. In an embodiment, a housing of the keyboard may include a key opening and a support layer may be mounted in the housing. Key silos may be mounted on the support layer and input keys with support legs may be mounted in the key silos. In an embodiment the key silos may comprise an internally lubricated resin. An actuation unit and a keyboard circuitry may be in communication and encapsulated in a first and second barrier layer so as to provide a keyboard that may be safely placed in a dishwasher. If the keyboard is configured for wireless use, a sealable power source compartment sealably coupled to the keyboard circuitry may be provided with a removable door so as to allow the user, in operation, to access and replace a power source. The keyboard may include an externally exposed connector that may be sealed with a plug that may be attached to the housing by a tether.