Joystick Return Mechanism With Hall Sensing Accuracy

Solution Overview

Problem

Existing joysticks with springs for automatic return have multiple stages of mechanical signal transmission, leading to increased errors when returning to the central position.

Innovation Solution

A joystick design with a main shaft and two swinging components, each with limiting parts and an elastic component, allowing direct transmission of return signals through a Hall element, reducing mechanical stages and errors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the spring directly clamps on the main shaft with multiple mechanical transmission stages, then the automatic return function is achieved, but the transmission error increases

Engineering Contradiction:

Improveautomatic return functionVSAvoidsignal transmission accuracy

Core Design Contradiction:

ReliabilityVSMeasurement precision

Solution Approach 1:

The patent extracts the elastic component from direct contact with the main shaft and introduces an intermediate transmission component. This intermediate component acts as a buffer that reduces the direct mechanical coupling between the spring and main shaft, thereby reducing signal transmission errors while maintaining the automatic return function.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces an intermediate transmission component as a mediator between the elastic component and the main shaft. This intermediary element reduces the direct mechanical transmission path, minimizing error accumulation during signal transmission while preserving the automatic return capability.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If multiple mechanical transmission stages are used for automatic return, then the return mechanism is achieved, but the error in return position increases

Engineering Contradiction:

Improveautomatic return mechanismVSAvoidreturn position accuracy

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The patent replaces part of the direct mechanical transmission system with an intermediate transmission component that has reduced friction and wear characteristics. This substitution maintains the automatic return mechanism's operability while improving the precision of the return position by reducing mechanical error accumulation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Duration of action of moving object

If the spring directly pushes the main shaft, then the automatic return is achieved, but the signal transmission error increases due to more transmission times

Engineering Contradiction:

Improveautomatic return actionVSAvoidreturn signal accuracy

Core Design Contradiction:

Duration of action of moving objectVSMeasurement precision

Solution Approach 1:

The patent introduces an intermediate transmission component as a mediator between the elastic component and the main shaft. This intermediary element reduces the direct mechanical transmission path, minimizing error accumulation during signal transmission while preserving the automatic return capability.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent extracts the elastic component from direct contact with the main shaft and introduces an intermediate transmission component. This intermediate component acts as a buffer that reduces the direct mechanical coupling between the spring and main shaft, thereby reducing signal transmission errors while maintaining the automatic return function.

Inventive Principle:

Principle #2Taking out (Extraction)

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 reduces mechanical signal transmission steps, enhancing accuracy and precision in the joystick's return to the central position.

Implementation Method 1

an elastic component (410), wherein the elastic component (410) directly abuts against the first limiting part (240) and the second limiting part (330)

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

the first swinging component (200) or the second swinging component (300) transmits a return signal to an electronic product through a Hall element

Methodology Applied

Scientific EffectHall effect: Hall Effect

Data Source

PatentUS12461551B2Joystick

Publication Date: 2025.11.04 SHENZHEN GULI TECHNOLOGY CO LTD

AI summary

A joystick includes a main shaft, a first swinging component, a second swinging component, and an elastic component. The first swinging component is disposed on the main shaft, the main shaft is capable of driving the first swinging component to swing along a first direction. The second swinging component is disposed at one side of the main shaft distal from the first swinging component, the main shaft is capable of driving the second swinging component along a second direction. The first direction is perpendicular to the second direction in the same plane. The first swinging component includes a first limiting part, the elastic component abuts against the first limiting part. The second swinging component includes a second limiting part, and the elastic component abuts against a side surface of the second limiting part distal from the main shaft.