Electronic Actuation Switch Rotary Magnetic State Detection
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Solution Overview
Problem
Existing electronic operating switches for water fittings require complex calibration due to mechanical latching positions and are prone to mechanical wear, making them unreliable and inefficient.
Innovation Solution
An electronic actuation switch with a rotary movement mechanism using magnets and sensors to detect different actuation states, allowing for non-contact, wear-free operation and improved reliability by utilizing magnets with varying field strengths and distances to differentiate states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If mechanical latching elements are used to detect operating states, then the structure is simple, but the reliability decreases due to mechanical wear and tolerance accumulation
Solution Approach 1:
The patent replaces mechanical latching elements and contact-based sensors with a magnetic field-based detection system. Magnets are attached to the rotary actuation section at specific positions corresponding to different operating states, and Hall effect sensors or reed switches detect the magnetic field changes without mechanical contact. This eliminates mechanical wear while maintaining structural simplicity, directly resolving the contradiction between simple structure and reliable operation.
Solution Approach 2:
The patent introduces magnetic fields as an intermediary between the mechanical rotary movement and the electronic detection system. Instead of direct mechanical contact or electrical contacts, magnets serve as the intermediary that transfers positional information from the actuation section to the sensors through non-contact magnetic field interaction, eliminating mechanical wear while preserving the simple rotary mechanism.
2Reliability
If complex calibration is performed to accommodate mechanical tolerances, then the operating states can be reliably detected, but the manufacturing complexity and time increase
Solution Approach 1:
The magnetic field-based detection system is inherently tolerant of mechanical tolerances because magnetic field detection does not require precise mechanical alignment like contact-based systems. The system self-adjusts to tolerance variations without requiring complex calibration procedures, as the magnetic field presence/absence or strength changes provide clear detection signals that are not sensitive to small positional variations, thereby eliminating calibration complexity while maintaining reliability.
Solution Approach 2:
The patent changes the detection parameter from mechanical position (which is sensitive to tolerances) to magnetic field presence or strength (which is less sensitive to tolerances). By detecting magnetic field characteristics rather than precise mechanical positions, the system achieves reliable operating state detection without requiring complex calibration to compensate for mechanical tolerance variations.
3Device complexity
If mechanical contact elements are used for actuation, then the structure is simple, but the service life decreases due to mechanical wear
Solution Approach 1:
The patent replaces mechanical contact-based actuation and detection with a magnetic field-based system. The actuation section rotates mechanically (maintaining simple structure), but the detection is performed non-contactly using magnets and magnetic sensors. This substitution eliminates mechanical wear between the actuation mechanism and the detection system, significantly extending service life while preserving the simplicity of the rotary actuation mechanism.
Solution Approach 2:
Magnetic fields serve as an intermediary that enables detection without mechanical contact. The magnets attached to the rotating actuation section interact with the sensors through the magnetic field, allowing the actuation mechanism to operate without wearing against any detection components, thereby extending service life while maintaining simple mechanical actuation.
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 solution enables reliable detection of discrete actuation states with reduced mechanical wear and improved service life, providing clear haptic feedback and efficient control of water processing functions like cold, hot, and treated water generation.
Implementation Method 1
at least one magnet assigned to an actuation state, which in the course of the relative movement at least temporarily enters a detection range of a sensor
Data Source
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AI summary
The electronic actuating switch (1) has actuating states (2) for water fittings (5), an actuating section (6), a base section (7) and a guiding unit for a relative movement of the both sections to each other. A sensor and a magnet are arranged in the sections in a selective manner. The magnet associated to the actuating states is used in a detection area of the sensor in the course of the relative movement in a partial manner. An independent claim is included for a water fitting with an inlet.