Magnetic Coupling for Faucet Sprayheads
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Faucets with pullout sprayheads face challenges in securely coupling and uncoupling the sprayhead from the faucet body, as existing locking mechanisms like bayonet connectors and snap fingers may not provide a strong or reliable connection, especially under varying fluid pressures and temperature conditions.
Innovation Solution
A magnetic coupling system using dipolar magnets with a magnetic field strength of 400 to 2000 gauss is employed, allowing the sprayhead to be removably coupled to the faucet body with a force requirement of 2.0 to 12.0 pounds, and featuring a bi-modal operation for easy attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If locking bayonet connectors or snap fingers are used to couple the sprayhead to the faucet body, then the connection can be made and uncoupled, but the retaining force and reliability of the connection is insufficient under varying fluid pressures and temperature conditions
Solution Approach 1:
The patent replaces mechanical locking mechanisms (bayonet connectors, snap fingers) with a magnetic coupling system. The magnetic coupling uses magnetic attraction force to retain the sprayhead to the faucet body, eliminating the need for mechanical locking components. This substitution provides more reliable and stronger connection that maintains its force under varying fluid pressures and temperature conditions.
Solution Approach 2:
The patent specifies precise parameters for the magnetic coupling including magnetic field strength (400 to 2000 gauss), pulling force requirements (2.0 to 12.0 pounds), and magnetic member dimensions. By controlling these parameters, the magnetic coupling achieves optimal retaining force that is both strong enough to withstand fluid pressure variations and weak enough to allow easy manual detachment when needed.
2Reliability
If a strong magnetic coupling is used to provide reliable attachment, then connection strength is improved, but the ease of manual detachment and operation is reduced
Solution Approach 1:
The patent optimizes the magnetic coupling parameters to achieve a balance between retention strength and ease of detachment. The magnetic field strength is controlled at 400 to 2000 gauss, and the pulling force is designed to be between 2.0 to 12.0 pounds. This parameter optimization ensures the connection is strong enough for reliable operation under fluid pressure but weak enough to be easily detached by manual pulling force.
Solution Approach 2:
The magnetic coupling provides dynamic retention characteristics where the magnetic force automatically adjusts to maintain secure connection during normal operation but can be easily overcome by applied manual force for detachment. The coupling remains engaged during normal use conditions but allows intentional removal when sufficient pulling force is applied, providing operational flexibility.
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 magnetic coupling system provides a secure and reliable attachment of the sprayhead to the faucet body, allowing for easy manipulation and efficient liquid dispensing while withstanding the demands of fluid pressure and temperature variations, ensuring a robust and aesthetically pleasing solution.
Implementation Method 1
The magnetic member is dipolar and has a magnetic field of between 400 and 2,000 gauss tested at 0.090 inches
Implementation Method 2
The attracted member is magnetically attracted to the magnetic member and supported by the other of the dispensing member and the support member
Implementation Method 3
The magnetic coupling requires between 2.0 and 12.0 pounds of force to pull the dispensing member from the support member
Data Source
AI summary
A faucet including a faucet head, a body and a magnetic coupling releasably coupling the faucet head to the faucet body.