Optical Joystick Recovery Structure for Accurate Position Reset
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Solution Overview
Problem
Conventional optical joysticks suffer from inaccurate recovering motion due to non-parallel ends of the recovering component, leading to limited gesture operation and reduced detection accuracy.
Innovation Solution
A joystick design incorporating a substrate, stick head, actuating component, sheathing component, and resilient recovering component, with pivots and constraining components to stabilize the recovering motion, ensuring accurate detection and recovery to predefined positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the recovering component is used in conventional optical joysticks, then the lever arm can be moved and recovered, but the recovering motion becomes inaccurate due to non-parallel ends of the recovering component
Solution Approach 1:
The patent introduces a guide component as an intermediary between the recovering component and the lever arm. This guide component has a guide surface that guides the recovering component, ensuring that the recovering force is applied accurately to return the lever arm to its initial position. The guide surface compensates for the non-parallel ends of the recovering component, maintaining both recovering accuracy and detection precision.
2Reliability
If the recovering component ends are not parallel due to long-term usage and incorrect installation, then the recovering function deteriorates, but the structure remains simple
Solution Approach 1:
The guide component serves as a mediator that corrects the misalignment caused by non-parallel recovering component ends. The guide surface provides a reference that ensures accurate force application regardless of the recovering component's condition, improving reliability without significantly increasing structural complexity.
Solution Approach 2:
The guide surface is designed to dynamically adapt to the recovering component's position during operation, providing continuous guidance as the lever arm moves. This dynamic guidance ensures consistent recovering accuracy throughout the range of motion, maintaining stability over time.
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 achieves stable recovering and improved detection accuracy by utilizing pivots and constraining components to maintain precise joystick operation, enhancing the joystick's ability to detect and recover to initial positions.
Implementation Method 1
the recovering component is compressed to store a resilient recovering force; when the pressure applied to the handle is removed, the resilient recovering force of the recovering component moves the lever arm back to an initial mode
Data Source
AI summary
The joystick includes a substrate, a stick head, an actuating component, a sheathing component and a resilient recovering component. The stick head is movably located above the substrate. An identification feature is disposed on a bottom of the actuating component. The sheathing component is assembled with the actuating component. Two opposite ends of the resilient recovering component respectively abut against the substrate and the sheathing component.