Electronic Pull-Out Faucet With Single-Hose Magnetic Sensing

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Solution Overview

Problem

Conventional electronic pull-out faucets have a complex structure due to the need for a two-section hose to accommodate a magnet, making assembly troublesome and use inconvenient, especially with the lack of versatile control modes for water spraying.

Innovation Solution

An electronic pull-out faucet design where the magnet is positioned at the outlet end of the hose, eliminating the need for a two-section hose, and incorporating a human body sensor switch to enable various control modes for water spraying, simplifying the structure and enhancing user convenience.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the magnet is disposed on the middle section of the pull-out hose, then the magnetic sensor can sense the magnet when the hose is pulled, but the pull-out hose needs to be divided into two sections requiring a connecting member, complicating the structure and making assembly troublesome

Engineering Contradiction:

Improvemagnetic sensing reliabilityVSAvoidpull-out hose structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The magnet is extracted from the middle section of the pull-out hose and relocated to the pull-out spray head. This allows the pull-out hose to be a single continuous section without requiring division into two parts connected by a special connecting member, thereby simplifying the hose structure while maintaining the magnetic sensing function.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The pull-out spray head serves as an intermediary carrier for the magnet. Instead of embedding the magnet directly in the hose middle section, the magnet is placed in the spray head which is connected to the hose outlet end, achieving the sensing function while avoiding hose structural complexity.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Device complexity

If manual valve cores are used for controlling the pull-out spray head, then the structure is simple, but it is inconvenient for use

Engineering Contradiction:

Improvevalve control structureVSAvoidspray head control convenience

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

The manual valve core control mechanism is replaced with an electronic control system consisting of a magnetic sensor and solenoid valve. The magnetic sensor detects the magnet's position in the pull-out spray head and automatically controls the solenoid valve to open or close, eliminating the need for manual operation and improving convenience.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system achieves automatic control where the magnetic sensor automatically detects the magnet's position and triggers the solenoid valve accordingly. When the pull-out spray head is pulled, the magnet moves and the sensor automatically opens the valve; when returned, the valve automatically closes, without requiring user intervention.

Inventive Principle:

Principle #25Self-service

3Device complexity

If the magnet is disposed on the pull-out spray head, then the pull-out hose structure is simplified to a single section, but the magnet positioning and securing mechanism must be ensured

Engineering Contradiction:

Improvepull-out hose structureVSAvoidmagnet positioning reliability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The magnet is nested within the pull-out spray head structure, specifically disposed in the inner body which is connected to the hose outlet end. This nesting arrangement secures the magnet in a reliable position while maintaining a simplified single-section hose structure.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The magnet is combined with the pull-out spray head as an integrated assembly. The spray head inner body and magnet work together as a unified component, ensuring the magnet remains securely positioned during use while simplifying the overall hose structure to a single section.

Inventive Principle:

Principle #5Merging (Combining)

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 simplified hose structure and addition of human body sensor switches allow for easier assembly and provide multiple control modes for water spraying, improving user experience by eliminating the need for a two-section hose and enabling automatic control based on user presence.

Implementation Method 1

The magnetic sensor is fitted to the support rod of the faucet body. The magnet is fitted to the outlet end of the pull-out hose. When the pull-out spray head is pulled, the magnet is moved along with the pull-out hose so that the magnetic sensor senses the absence of the magnetism of the magnet.

Methodology Applied

Scientific EffectMagnetic field sensing: Magnetic Field

Implementation Method 2

An electronic pull-out faucet is equipped with a magnetic switch assembly and a solenoid valve for controlling water to flow through the pull-out hose of the faucet.

Methodology Applied

Scientific EffectElectromagnetic actuation: Electromagnet

Data Source

PatentUS11781300B2Electronic pull-out faucet

Publication Date: 2023.10.10 XIAMEN FOR BETTER SANITARY WARE

AI summary

An electronic pull-out faucet includes a faucet body, a pull-out hose, a pull-out spray head, a solenoid valve, and a magnetic switch assembly. A magnet of the magnetic switch assembly is fitted to an outlet end of the pull-out hose. Compared with the prior art, there is no need for the pull-out hose to be a two-section hose for installing the magnet. The structure of the pull-out hose is simplified, and the assembly is simpler.