Threadless Sanitary Siphon with Frictional Cladding Sleeve

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional concealed siphons with threaded connections are not suitable for washbasins due to the requirement for external threads, necessitating larger wall openings and complex installation processes, whereas existing solutions for flush-mounted siphons lack adaptability for washbasins and are difficult to install.

Innovation Solution

A flush-mounted sanitary facility with a threadless connecting piece and a cladding element featuring a cover plate with an attachment sleeve for easy assembly, utilizing a frictional connection and adhesive bonding for secure attachment, allowing the device to accommodate a washbasin outlet pipe and simplify installation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a threaded connecting piece is used for concealed siphon, then the connection is secure, but the device cannot be used for washbasin connections and requires larger wall openings

Engineering Contradiction:
Improveadaptability for washbasin connectionsVSAvoidcomplexity of connection piece design
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The connecting piece is designed with a universal push-fit connection mechanism that can accommodate different types of outlet pipes (rigid and flexible) without requiring external threads, making it suitable for both washbasin and other sanitary fixture connections. The connection piece works with various pipe diameters through the push-fit mechanism with elastomeric sealing elements.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The external threading is completely removed from the connecting piece design. Instead of using traditional threaded connections, the patent extracts the threading function and replaces it with a push-fit mechanism combined with elastomeric sealing elements, simplifying the connection piece while expanding its applicability.

Inventive Principle:
Principle #2Taking out (Extraction)

2Ease of operation

If a cover plate with passage is used to cover access opening, then the access opening is covered, but the installation process becomes complex and difficult

Engineering Contradiction:
Improveease of installationVSAvoidcomplexity of assembly process
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The cover plate and attachment sleeve are merged into a single integrated component. The attachment sleeve is directly formed as part of the cover plate structure, eliminating the need for separate assembly steps and simplifying the installation process while maintaining the functional separation of covering the access opening and providing the push-fit connection.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The attachment sleeve is pre-formed as an integral part of the cover plate during manufacturing, with the elastomeric sealing elements already in place. This preliminary preparation allows for quick installation by simply pushing the integrated component onto the connecting piece without requiring separate assembly steps.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If the attachment sleeve is made rigid, then the connection is stable, but the installation becomes difficult and the hold on connecting piece is insufficient

Engineering Contradiction:
Improvestability of connectionVSAvoidease of installation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The attachment sleeve is designed with variable flexibility parameters - it has sufficient radial flexibility during installation to be easily pushed onto the connecting piece, but provides adequate frictional engagement and positional stability during operation. The flexibility is controlled through material selection and wall thickness design to achieve the desired balance between installability and connection stability.

Inventive Principle:
Principle #35Parameter changes

4Shape

If the cover plate is made large to cover larger wall opening, then the aesthetic appearance is improved, but the production complexity increases

Engineering Contradiction:
Improveaesthetic appearanceVSAvoidproduction complexity
Core Design Contradiction:
ShapeVSEase of manufacture

Solution Approach 1:

The cover plate is designed with a standardized size and shape that can be efficiently manufactured using common fabrication processes. The attachment sleeve is positioned eccentrically within the cover plate, allowing the component to be produced as a single integrated piece through processes like injection molding or stamping, avoiding the need for complex assembly of multiple parts while maintaining aesthetic appearance.

Inventive Principle:
Principle #1Segmentation

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 solution enables easy installation and adaptation for washbasin connections by providing a secure, frictional connection and adhesive bonding, ensuring a seamless integration with the wall while maintaining aesthetic and functional integrity.

Implementation Method 1

The attachment sleeve serves to attach the cladding element to the connecting piece, forming an at least axially acting frictional connection

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 2

In an embodiment that is expedient in terms of production technology, the flush-mounted device has a cladding element in which the attachment sleeve is glued to the cover plate

Methodology Applied
Scientific EffectAdhesive bonding: Adhesive

Implementation Method 3

The connecting piece is provided and designed in particular to accommodate an outlet pipe to be connected and a seal that seals the outlet pipe with the concealed siphon

Methodology Applied
Scientific EffectSealing:

Data Source

PatentEP2354335B8Sanitary flush-mounted attachment with associated cladding element
Publication Date: 2015.03.11 HAAS ANGELA

AI summary

A concealed sanitary installation (1) suitable for connecting a washbasin or similar sanitary fixture is specified. The concealed sanitary installation (1) comprises a concealed siphon (2) with a threadless connection spigot (7) for connecting an outlet pipe (4) of a sanitary fixture, and a cover element (3) for covering an access opening (12) of the concealed siphon (2). The cover element (3) comprises a cover plate (20) that conceals the access opening (12) in the intended installation position and has a feedthrough (24) for the outlet pipe (4), as well as a sleeve (21) mounted flush with the feedthrough (24) on the cover plate (20), which is placed on the connection spigot (7) to form an axially acting frictional connection.