Magnetic Rocker Structure for Accurate Center Return and Press Detection
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Solution Overview
Problem
Existing rocker devices suffer from issues such as short life, detection accuracy loss, and inaccurate center return due to complex structures like cardan shafts and springs, which lead to metal fatigue and reduced service life.
Innovation Solution
A rocker device with a simpler structure utilizing a ring magnet, a fixed member, and a magnetic sensor chip, where the magnet inside ring is symmetrical and supported by the fixed member, enabling automatic center return and press detection without springs or carbon film contact, using magnetic forces for stable positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If carbon film potentiometer structure is used, then the structure is simple and cost is low, but the service life is short and detection accuracy is lost due to metal sliding on carbon film
Solution Approach 1:
The patent replaces the mechanical contact-based carbon film potentiometer structure with a magnetic field-based detection system. The rocker body includes a magnet that interacts with a magnetic sensor (such as a Hall sensor or magnetic resistance sensor) to detect rotation angle, eliminating the need for metal sliding on carbon film. This substitution of mechanical contact with magnetic field interaction resolves the contradiction by maintaining structural simplicity while dramatically improving service life and detection accuracy.
2Measurement precision
If Hall sensor structure is used, then detection accuracy is improved, but the internal structure becomes complex with cardan shaft and spring leading to metal fatigue
Solution Approach 1:
The patent extracts and eliminates the complex mechanical feedback components (cardan shaft and spring) from the Hall sensor-based rocker structure. The design uses a simplified rocker body with a magnet that directly interacts with the magnetic sensor, removing the unnecessary mechanical feedback transmission path. This extraction of harmful complex components maintains high detection accuracy while significantly reducing structural complexity and preventing metal fatigue.
Solution Approach 2:
The patent replaces the mechanical feedback system (cardan shaft and spring) with a direct magnetic field-based detection system. The magnet on the rocker body interacts directly with the magnetic sensor to detect rotation angle, eliminating the need for mechanical feedback transmission components. This substitution resolves the contradiction by maintaining measurement precision while dramatically simplifying the internal structure and eliminating sources of metal fatigue.
3Stability of the object's composition
If cardan shaft and spring structure is used for force feedback, then the rocker can return to center, but the structure is complex and leads to metal fatigue reducing service life
Solution Approach 1:
The patent replaces the mechanical force feedback system (cardan shaft and spring) with a magnetic field-based detection and control system. The magnet on the rocker body interacts with the magnetic sensor to detect rotation angle, and the control system provides electronic feedback to return the rocker to center position. This substitution eliminates complex mechanical components that cause metal fatigue while maintaining the center return function, thereby improving service life and reducing structural complexity.
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 device achieves higher detection accuracy and extended service life with reliable automatic center return and press detection, eliminating metal fatigue and reducing costs through a non-contact magnetic transmission system.
Implementation Method 1
the magnetic sensor chip is configured to detect a rotation angle of the rocker, and is located below the magnet inside ring in a direction perpendicular to the circular section of the circular aperture
Implementation Method 2
using magnetic forces for stable positioning
Data Source
AI summary
The present disclosure provides a rocker device with the automatic center returning function. The rocker device adopts the magnetic sensor to acquire and output the angle information of the rocker rotation, and realizes the rocker automatically returning to the center through the magnet fixedly connected to the rocker and the structure design of the outer magnet ring. Additionally, below the rocker, the outer magnet is arranged on the part of the fixed member wrapping the outer side of the magnet ring and supporting the rocker, so that the press detection and the pressing back to the center for the rocker can be realized in conjunction with the additionally arranged magnetic sensor. Additionally, through adjusting the size of the magnets fixedly connected to the rocker and the size of the magnet ring, the feeling of the rocker device can be conveniently adjusted.