Drain with flexible layer arrangement and method for arranging flexible layer arrangement on drain

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Solution Overview

Problem

Drains, particularly elongate shower drains, face challenges in securing a flexible layer for a water seal due to limited fixing surfaces and protruding flanges that interfere with tile installation, leading to inadequate fixing and potential seal failure under thermal expansion and contraction.

Innovation Solution

A Y-shaped flexible layer arrangement is used, where the flexible layer and a strip of flexible material are fixed to both sides of a flange, doubling the fixing surface and ensuring a reliable connection, allowing for effective sealing despite limited fixing surfaces and thermal movements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If a flange is provided on the drain to increase fixing surface, then the flexible layer can be better secured, but the flange protrudes under the finishing layer and impedes tile installation

Engineering Contradiction:
Improvefixing surface areaVSAvoidtile installation ease
Core Design Contradiction:
Area of stationary objectVSEase of manufacture

Solution Approach 1:

The flexible layer arrangement extends in multiple directions from the flange, creating a Y-shaped configuration that utilizes spatial arrangement in different dimensions to maximize fixing surface area without increasing flange protrusion horizontally

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Ease of manufacture

If the flange is kept small to facilitate tile installation, then tile setting is easier, but the fixing surface for the flexible layer becomes insufficient

Engineering Contradiction:
Improvetile installation easeVSAvoidfixing surface area
Core Design Contradiction:
Ease of manufactureVSArea of stationary object

Solution Approach 1:

The flexible layer arrangement is divided into multiple segments (the flexible layer and the strip of flexible material) that are arranged in a Y-shaped configuration, allowing the fixing surface to be distributed across multiple areas rather than requiring a single large flange

Inventive Principle:
Principle #1Segmentation

3Device complexity

If a single flexible layer is used on a limited fixing surface, then the structure remains simple, but the fixing reliability is insufficient under thermal expansion and contraction

Engineering Contradiction:
Improvestructure complexityVSAvoidseal reliability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The flexible layer arrangement combines two different flexible materials (the flexible layer and the strip of flexible material) with complementary properties to create a composite structure that enhances sealing reliability through the synergistic effects of different material characteristics

Inventive Principle:
Principle #40Composite materials

4Reliability

If the flexible layer is extended to increase fixing surface, then fixing reliability improves, but the arrangement becomes more complex and interferes with tile installation

Engineering Contradiction:
Improvefixing reliabilityVSAvoidarrangement complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The Y-shaped arrangement utilizes spatial arrangement in multiple directions from the flange, extending the flexible layer and strip in different orientations to maximize fixing surface area while maintaining a compact configuration that does not interfere with tile installation

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP2248956B1Drain with flexible layer arrangement and method for arranging flexible layer arrangement on drain
Publication Date: 2021.10.06 EASY SANITAIRY SOLUTIONS BV
  • EP2248956B1 patent drawingFigure 1~2
  • EP2248956B1 patent drawingFigure 3~4
  • EP2248956B1 patent drawingFigure 5~6

AI summary

The invention relates to a flexible layer, comprising an edge and a strip of flexible material extending parallel to the edge, which strip is arranged on the flexible layer at a distance from the edge and which strip has a free edge extending substantially as far as the edge of the flexible layer such that a structure of Y-shaped cross-section is obtained. The invention also relates to a drain.