Magnetic Field Switch With Click Feeling
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Solution Overview
Problem
Existing switches without physical contacts, such as those using photoelectric contacts, face limitations in expanding their application range and generating a click feeling efficiently, particularly in terms of manufacturing costs and reliability.
Innovation Solution
A switch design that utilizes a movable member, a pressing member, a magnet, and a magnetic field detection part to output signals based on changes in the magnetic field caused by the magnet's movement due to the pressing action, allowing for the expansion of application range and cost-effective production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If photoelectric contacts are used to turn on and off circuits without physical contacts, then the reliability is improved, but the manufacturing cost increases
Solution Approach 1:
The patent replaces photoelectric contacts with a magnetic field-based detection system. A magnet attached to the movable member interacts with a magnetic field detection part (such as a Hall element) to detect the position and generate signals, eliminating the need for photoelectric components while achieving contactless circuit switching.
Solution Approach 2:
The patent changes the detection parameter from optical (photoelectric) to magnetic. By utilizing magnetic field strength changes caused by magnet movement, the system achieves reliable detection with simpler and more cost-effective components compared to photoelectric sensors.
2Ease of operation
If magnets are used to generate click feeling in contactless switches, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The patent combines the magnet's dual functions: it generates the click feeling through magnetic force interaction and simultaneously serves as the detection target for the magnetic field detection part. This integration eliminates the need for separate detection mechanisms, reducing overall device complexity.
Solution Approach 2:
The magnet performs multiple functions within the switch: it provides tactile feedback through magnetic attraction/repulsion forces and acts as a positional indicator for the magnetic field detection system. This multi-functionality simplifies the overall structure by eliminating dedicated components for each function.
3Adaptability or versatility
If magnetic field detection is used to expand application range of switches, then the adaptability is improved, but the measurement precision requirements increase
Solution Approach 1:
The patent optimizes the magnetic field detection by positioning the magnetic field detection part at specific locations where magnetic field changes are most pronounced during magnet movement. This localized optimization ensures sufficient detection precision for various switch applications without requiring excessively high overall measurement precision.
Solution Approach 2:
The patent uses magnetic field detection with sufficient precision for the specific application requirements rather than maximizing precision. The magnetic field detection part detects changes in magnetic field strength caused by magnet movement, providing adequate precision for circuit switching and position detection across diverse applications.
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 switch effectively turns circuits on and off and generates a click feeling without mechanical contacts, enhancing the application range and reducing manufacturing costs by leveraging magnetic field changes for signal output.
Implementation Method 1
a magnetic field generated by the magnet and detected by the magnetic field detection part is changed due to the pressing of the pressing member
Implementation Method 2
the magnetic field detected by the magnetic field detection part changes as the magnet operates with respect to the magnetic field detection part due to the swing of the movable member caused by the pressing of the pressing member
Data Source
AI summary
Provided are a switch and an operation device which can expand the application range of switches using magnets, etc. A switch incorporated in an operation device includes a movable member with a first end side fixed and a second end side swinging when receiving a pressing, and a pressing member which presses the movable member, and further includes a permanent magnet (magnet) on the tip of the movable member, and a magnetic field detection part which detects a magnetic field. In response to an operation on the operation device, the pressing member of the switch presses the movable member downward. The magnetic field generated by the permanent magnet (magnet) and detected by the magnetic field detection part changes due to the pressing of the pressing member, and the switch outputs a signal based on the magnetic field detected by the magnetic field detection part.