Pop-Up Drain Assembly With Magnetic Stopper Coupling
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Solution Overview
Problem
Conventional pop-up drain assemblies suffer from clogging due to debris accumulation on the pivot rod, requiring messy and time-consuming disassembly for cleaning, and often necessitate expensive professional services.
Innovation Solution
The pop-up drain assembly design features a pivot rod that does not protrude into the fluid flow pathway, either diverting fluid around it using flow diverter plates or utilizing magnetic coupling to move the stopper, preventing debris from catching and allowing for easy removal and cleaning of the stopper without disassembling the pivot rod.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the pivot rod protrudes into the drain conduit to engage the stopper, then the stopper can be moved between open and closed positions, but debris accumulates on the pivot rod causing clogging
Solution Approach 1:
The pivot rod is extracted from the drain conduit entirely. Instead of protruding into the conduit to engage the stopper, the pivot rod is positioned outside the conduit and connects to the stopper through a magnetic coupling mechanism. This extraction eliminates the surface where debris accumulates while preserving the stopper's movement capability through magnetic attraction between the pivot rod and a magnet embedded in the stopper.
Solution Approach 2:
The direct mechanical engagement between the pivot rod and stopper is replaced with a magnetic coupling system. The pivot rod magnetically attracts a magnet embedded in the stopper to move it, eliminating the need for physical contact between the pivot rod and the stopper's moving parts. This substitution prevents debris from catching on mechanical interfaces while maintaining operational functionality.
2Ease of operation
If the pivot rod protrudes into the drain conduit, then the stopper can be actuated, but disassembly is required for cleaning which is messy and time-consuming
Solution Approach 1:
The pivot rod is extracted from the drain conduit and repositioned externally. This allows the stopper to be removed and cleaned independently without requiring disassembly of the pivot rod connection to the conduit. The magnetic coupling mechanism maintains actuation capability while enabling easy access to the stopper for cleaning purposes.
Solution Approach 2:
The drain assembly is segmented into separable components: the stopper can be independently removed from the drain conduit for cleaning, while the pivot rod remains externally positioned and connected through magnetic coupling. This segmentation allows maintenance of one component without affecting others, reducing overall cleaning time and complexity.
3Reliability
If the pivot rod protrudes into the drain conduit, then the stopper engagement is secure, but professional cleaning services are frequently needed
Solution Approach 1:
The mechanical engagement system is replaced with magnetic coupling between the externally positioned pivot rod and a magnet in the stopper. This magnetic connection provides reliable engagement without creating surfaces where debris accumulates. The elimination of mechanical contact points within the conduit prevents clogging issues that would otherwise require professional intervention.
Solution Approach 2:
The design enables users to perform maintenance themselves by simply removing and cleaning the stopper without requiring professional services. The externally positioned pivot rod with magnetic coupling allows easy access to all components for user-friendly cleaning, eliminating the need for specialized tools or expertise that would otherwise be required to service the drain assembly.
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
This design significantly reduces clogging and simplifies maintenance by preventing debris accumulation on the pivot rod, making it easier to clean and maintain, thus reducing the need for professional services and improving drainage efficiency.
Implementation Method 1
the pivot rod moves the stopper up and down through magnetic coupling between the stopper and the pivot rod
Implementation Method 2
fluid, typically water, draining through the drain piping is diverted around a pivot rod that extends into or protrudes inside the piping
Data Source
AI summary
A pop-up drain assembly for a sink has drain piping, a stopper in the drain piping, a pivot rod for opening and closing the stopper and tends not to clog because the pivot rod is not within a fluid flow path. In one embodiment the stopper has flow diverter plates that channel fluid flowing through the drain piping away from the pivot rod so that hair, waste and debris does not catch on and accumulate on the pivot rod. In another embodiment the stopper and the pivot rod are engaged through magnetic coupling, and the pivot rod does not protrude into the fluid flow path. The stopper is preferably variable in length for adjustment to fit different distances from the pivot rod to the top of the drain piping.