Keyboard Assembly Using Bonding Colloid to Replace Screws

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Solution Overview

Problem

Conventional keyboard assembly methods, particularly screwing, often result in issues like poor screwing, stripping, and short circuits due to loosening screws falling into the computer, requiring precise tools and trained personnel.

Innovation Solution

A keyboard assembly method that connects keyboard parts without screws by using a bonding colloid to form connecting parts in corresponding holes, bonding to the keyboard frame and circuit board, ensuring secure assembly without the need for screws.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If screwing method is used to assemble keyboard parts, then connection strength is improved, but reliability deteriorates due to poor screwing, stripping, and short circuit caused by loosening screws

Engineering Contradiction:
Improveconnection strengthVSAvoidassembly reliability
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The patent replaces the mechanical screwing system with a chemical bonding system using bonding colloid. The bonding colloid is applied to connect the keyboard frame and baseplate, eliminating screws entirely. This substitution resolves the reliability issues caused by screw loosening, stripping, and potential short circuits while maintaining connection strength through adhesive bonding.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The bonding colloid acts as an intermediary substance between the keyboard frame and baseplate. Instead of direct mechanical fastening with screws, the bonding colloid mediates the connection by forming an adhesive bond across the interface, thereby eliminating the harmful effects of metal screws while achieving reliable structural connection.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Strength

If screwing method is used to assemble keyboard parts, then connection strength is improved, but device complexity increases due to requiring precise operated assembling tools with well trained personnel

Engineering Contradiction:
Improveconnection strengthVSAvoidassembling process complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The patent replaces the complex mechanical screwing operation requiring precision tools and trained personnel with a simpler chemical bonding process. The bonding colloid can be applied using basic dispensing equipment or even manual application, dramatically reducing the complexity of the assembling process while maintaining connection strength through adhesive bonding.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The bonding colloid performs the fastening function automatically through its adhesive properties, eliminating the need for complex tool operations. The material itself provides the connecting function without requiring external mechanical intervention, thereby simplifying the assembly process and reducing dependency on skilled operators and precision tools.

Inventive Principle:
Principle #25Self-service

3Reliability

If bonding colloid is used to connect keyboard parts, then reliability is improved by avoiding screwing problems, but manufacturing precision requirements increase

Engineering Contradiction:
Improveassembly reliabilityVSAvoidhole alignment precision
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The patent employs preliminary positioning features such as positioning protrusions and positioning grooves that are pre-formed on the keyboard frame and baseplate respectively. These features establish precise alignment before the bonding colloid is applied, ensuring that the bonding surfaces are correctly positioned. This preliminary action eliminates the need for high-precision hole alignment during the bonding process itself, as the positioning features guide the components into proper alignment automatically.

Inventive Principle:
Principle #10Preliminary action

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 method allows for easy and secure assembly of keyboard components, avoiding issues like screw stripping and short circuits, while providing a bonding force equivalent to or exceeding traditional screwing methods.

Implementation Method 1

the connecting part bonds to a surface of the keyboard frame close to a circuit board through a through hole

Methodology Applied
Scientific EffectAdhesive bonding: Adhesive

Data Source

PatentUS11127548B1Keyboard and method for assembling thereof
Publication Date: 2021.09.21 LITE ON TECH CHANG ZHOU CO LTD
  • US11127548B1 patent drawing
  • US11127548B1 patent drawing
  • US11127548B1 patent drawing

AI summary

A keyboard and a method for assembling the keyboard are provided. The keyboard comprises a keyswitch module, a keyboard frame, and a plurality of connecting parts. The keyswitch module comprises a baseplate, a circuit board, and a plurality of keyswitch groups. The circuit board is disposed on the baseplate. The plurality of the keyswitch groups is disposed on the circuit board. The baseplate comprises a plurality of connecting holes. The circuit board comprises a plurality of through holes. The plurality of connecting holes respectively corresponds to the plurality of through holes. The keyboard frame is disposed on the keyswitch module, comprising a plurality of keyswitch holes. The plurality of the keyswitch groups is respectively disposed in the corresponding keyswitch holes. The connecting parts are respectively filled in the corresponding connecting holes, connecting to a surface of the keyboard frame close to the circuit board through the corresponding through holes.