Gaming Pedal Assembly Quick-Change Piston and Strain Gauge

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Solution Overview

Problem

Contemporary gaming pedal systems face challenges in easily tunable resistance profiles and accurate force detection, with current methods being complex, time-consuming, and prone to inaccuracies due to sensor placement and implementation.

Innovation Solution

A gaming pedal assembly featuring a quick-change piston assembly with dampening units and a strain gauge integrated into the cross-pin, allowing users to rapidly change resistance profiles without special tools and providing accurate force detection through structural modifications that enhance deformation measurement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If traditional sensor placement and implementation methods are used, then force detection can be achieved, but measurement precision and reliability are compromised due to inaccuracies and complexity

Engineering Contradiction:
Improveforce detection accuracyVSAvoidsensor implementation complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces traditional electrical force sensors with a mechanical strain gauge system integrated into the cross-pin structure. The strain gauge detects physical deformation of the cross-pin under load, converting mechanical force directly into measurable strain without complex sensor assemblies. This mechanical substitution simplifies the system while improving measurement accuracy through direct structural measurement.

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

Solution Approach 2:

The strain gauge is merged with the cross-pin structure itself, making the structural component also the sensing element. The cross-pin serves dual functions: providing mechanical support for the piston assembly and serving as the measurement element for force detection. This integration eliminates separate sensor mounting and reduces implementation complexity.

Inventive Principle:
Principle #5Merging (Combining)

2Adaptability or versatility

If resistance profile adjustment is made possible, then adaptability is improved, but device complexity increases due to additional components and adjustment mechanisms

Engineering Contradiction:
Improveresistance profile tunabilityVSAvoidadjustment mechanism complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent enables resistance profile adjustment by allowing users to change the dampening units within the piston assembly. Different dampening units with varying resistance characteristics can be installed to create different resistance profiles. This parameter change approach provides adaptability without requiring complex mechanical adjustment mechanisms, as the resistance is modified by swapping standardized components rather than adjusting existing ones.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The piston assembly is designed with a quick-release mechanism that allows dynamic reconfiguration of the resistance profile during operation or between uses. The ability to quickly swap dampening units provides adaptability while maintaining simplicity, as the mechanism uses straightforward mechanical release and replacement rather than complex adjustment systems.

Inventive Principle:
Principle #15Dynamics

3Ease of operation

If quick-release architecture is implemented, then ease of operation is improved, but manufacturing precision requirements increase to ensure proper fit and function

Engineering Contradiction:
Improvepiston assembly installation easeVSAvoidcross-pin fit precision
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The quick-release mechanism uses an intermediary locking feature between the piston assembly and cross-pin. This intermediary element provides a defined engagement point that guides proper alignment during installation, reducing the precision requirements for the main mating surfaces. The locking feature acts as a mediator that ensures correct positioning without requiring extremely tight tolerances across all contact surfaces.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The design incorporates a compression fit that provides a controlled engagement sequence. The piston assembly is designed to compress slightly during installation, providing a cushioning effect that absorbs manufacturing variations and ensures proper fit. This beforehand cushioning through controlled compression allows for easier operation while maintaining adequate manufacturing tolerances.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

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 users to easily and quickly adjust resistance profiles and improves force detection accuracy, enhancing user experience and simulation fidelity with reduced complexity and time.

Implementation Method 1

one or more dampening units configured within the cylinder housing... the one or more dampening units provide the resistance profile

Methodology Applied
Scientific EffectDamping: Damping

Implementation Method 2

The one or more dampening units can be comprised of polyurethane blocks, one or more mechanical springs, foam, sponge, elastomer

Methodology Applied
Scientific EffectViscoelasticity: Viscoelasticity

Implementation Method 3

a strain gauge can be coupled to the cross pin at a second location opposite the first location and configured to detect an amount of deformation of the cross pin that corresponds to an amount of force applied to the user interface region

Methodology Applied
Scientific EffectStrain gauge measurement: Piezoresistive Effect

Implementation Method 4

the piston assembly compresses according to the resistance profile of the piston assembly in response to the user interface region of the second end of the pedal arm receiving a pressing force

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS11090559B2Gaming pedal assembly
Publication Date: 2021.08.17 LOGITECH EUROPE SA
  • US11090559B2 patent drawing
  • US11090559B2 patent drawing
  • US11090559B2 patent drawing

AI summary

In certain embodiments, a gaming pedal assembly comprises a base platform and a pedal arm rotatably coupled to the base platform at a first mounting location that provides a first axis of rotation for the pedal arm relative to the base platform. The gaming pedal assembly further includes a piston assembly having a resistance profile, the piston assembly coupled to the pedal arm at a coupling location that provides a second axis of rotation for the piston assembly relative to the pedal arm. The piston assembly is rotatably coupled to the base platform at a second mounting location that provides a third axis of rotation for the piston assembly relative to the base platform. The piston assembly compresses according to the resistance profile of the piston assembly in response to a user interface region of the pedal arm receiving a pressing force.