Drain flange cover and strainer
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Solution Overview
Problem
Existing pop-up drain assemblies for sinks and bathtubs require significant effort and expense to replace when the drain flange becomes worn, tarnished, or when a change in appearance is desired, and there is a need for a strainer in the drain pipe to catch hair and debris.
Innovation Solution
A drain flange cover that can be used to hide the drain flange without removal, featuring a cap with a perforated tubular shaft for straining hair and debris, and a gasket for sealing, allowing for easy installation and various finishes or designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the drain flange is removed and replaced to change appearance or fix wear, then the appearance is improved, but the effort and expense increase significantly
Solution Approach 1:
The drain assembly is divided into separate components: the existing drain flange remains in place, and a separate decorative cover is installed over it. This segmentation allows the appearance to be changed without removing or replacing the entire drain assembly, reducing effort and expense while achieving the desired aesthetic improvement.
Solution Approach 2:
A decorative cover acts as an intermediary element between the user and the existing drain flange. This cover hides the worn or unsightly drain flange while allowing it to remain functional in place, providing an economical solution that improves appearance without requiring complete replacement of the drain assembly.
2Reliability
If a strainer is added to catch hair and debris, then the drain functionality is improved, but the device complexity increases
Solution Approach 1:
The strainer function is merged with the decorative cover by incorporating a perforated shaft or screen into the cover structure. This integration allows the cover to simultaneously serve as both an aesthetic element and a functional strainer that catches hair and debris, improving drain reliability without adding separate components or increasing overall device complexity.
Solution Approach 2:
The decorative cover is designed to perform multiple functions: it provides aesthetic coverage for the drain flange, acts as a strainer to catch hair and debris, and maintains proper drainage flow. This multi-functionality improves drain reliability while avoiding the need for separate strainer components, thereby not increasing device complexity.
3Ease of manufacture
If the drain flange cover includes a strainer, then the ability to filter debris is improved, but the manufacturing complexity increases
Solution Approach 1:
The strainer element is nested within or integrated into the decorative cover structure. The perforated shaft or screen is positioned inside the cover body, creating a compact nested arrangement that provides filtering capability while maintaining a simple overall structure that is easy to manufacture as a single integrated component.
Data Source
AI summary
A drain flange cover is provided for covering and hiding a drain flange in a sink or bathtub, which includes a drain cap and which may or may not include a longitudinal shaft and/or a strainer. The longitudinal shaft can be a perforated tube that serves as a strainer. Strainers can be cylindrical, regular-funnel shaped and inverted-funnel shaped. A drain stopper includes an open-close mechanism, a strainer and a drain flange cover. A drain stopper with a push-push mechanism can rest on a cross-member in a drain pipe, allowing easy removal to clean the strainer.